山田 哲也 (ヤマダ テツヤ)

農学研究院 基盤研究部門 生物資源科学分野准教授

研究者基本情報

■ 学位
  • 博士(学術)
■ URL
researchmap URLホームページURL■ ID 各種
研究者番号
  • 70374618
J-Global ID■ 研究キーワード・分野
研究キーワード
  • バレイショ
  • クロロフィル
  • ゲノム編集
  • amiRNA
  • miRNA
  • 貯蔵タンパク質
  • ダイズ
  • 形質転換
  • フラボノイド
  • 転写因子
  • 大豆
  • Myb転写因子
  • 種子
  • アグロバクテリウム
  • α-トコフェロール
  • ルテイン
  • リノレン酸
  • γ-TMT
  • 高機能性
  • 遺伝子
  • 遺伝分析
  • QTL解析
  • 作用機序
研究分野
  • ライフサイエンス, 遺伝学
  • ライフサイエンス, 植物分子、生理科学
  • 環境・農学, 遺伝育種科学
■ 担当教育組織

経歴

■ 経歴
経歴
  • 2025年07月 - 現在
    北海道大学, 大学院農学研究院, 准教授
  • 2012年 - 現在
    北海道大学大学院農学研究院, Graduate School of Agriculture Research Faculty of Agriculture, 講師
  • 2008年 - 2011年
    北海道大学 (連合)農学研究科(研究院), 助教

研究活動情報

■ 論文
  • Preferential induction of Dt2 gene in the absence of E1 function enhances semi-determinate stem growth in soybean
    Ryoma Takeshima; Shohei Nosaki; Meilan Xu; Kenta Nakashima; Shin Kato; Maria Stefanie Dwiyanti; Tetsuya Yamada; Baohui Liu; Jun Abe
    Journal of Experimental Botany, Oxford University Press (OUP), 2026年03月16日
    研究論文(学術雑誌), Abstract

    Suitable plant architecture is key to maximizing crop yield. Stem growth habit is a crucial characteristic of soybean plant architecture. Here, we investigated the combined effect of the Dt2 gene (producing semi-determinate growth habit) and a loss-of-function e1-nl allele of the floral repressor E1. Comparisons among near-isogenic lines with different maturity genotypes indicated that the loss or repression of E1 function enhanced the effect of Dt2 on main stem node numbers. Dt2 expression in stem tips was upregulated in early growing stages under long-day conditions (LD) by the Dt2 and e1-nl alleles in an additive manner. Additionally, an Arabidopsis APETALA1 ortholog was highly upregulated in a Dt2/e1-nl line. The electrophoretic mobility shift assay revealed that the E1 DNA-binding domain bound to several genomic sites harboring key polymorphisms differentiating Dt2 from dt2 alleles. One of these sites had different transcription activities between Dt2 and dt2 alleles, and these activities were repressed by E1. Together, our data suggest that the Dt2 allele confers semi-determinacy by being preferentially induced when released from the repression by E1. The allelic combination of Dt2 and e1-nl confers a distinct semi-determinate phenotype, which would facilitate the use of the Dt2 allele, particularly under LD at high latitudes.
  • Soy protein selectively accumulates formaldehyde
    Masanori Yamada; Momoka Uchida; Tetsuya Yamada
    Scientific Reports, 15, 1, Springer Science and Business Media LLC, 2025年03月18日, [査読有り]
    研究論文(学術雑誌)
  • Simultaneous site-directed mutagenesis for soybean β-amyrin synthase genes via DNA-free CRISPR/Cas9 system using a single gRNA.
    Asa, H.; Kuwabara, C.; Matsumoto K.; Shigeta, R.; Yamamoto, T.; Masuda, Y.; Yamada, T.
    Plant Cell Reports, 44, 1, 13, 2025年01月, [査読有り], [責任著者]
  • A DNA-free and genotype-independent CRISPR/Cas9 system in soybean
    Chikako Kuwabara; Ryuji Miki; Nobuyuki Maruyama; Masanori Yasui; Haruyasu Hamada; Yozo Nagira; Yumiko Hirayama; Wataru Ackley; Feng Li; Ryozo Imai; Naoaki Taoka; Tetsuya Yamada
    Plant Physiology, 196, 4, 2320, 2329, Oxford University Press (OUP), 2024年09月23日, [査読有り], [責任著者]
    研究論文(学術雑誌), Abstract

    Here, we report a smart genome editing system for soybean (Glycine max) using the in planta bombardment-ribonucleoprotein (iPB-RNP) method without introducing foreign DNA or requiring traditional tissue culture processes such as embryogenesis and organogenesis. Shoot apical meristem (SAM) of embryonic axes was used as the target tissue for genome editing because the SAM in soybean mature seeds has stem cells and specific cell layers that develop germ cells during the reproductive growth stage. In the iPB-RNP method, the RNP complex of the CRISPR/Cas9 system was directly delivered into SAM stem cells via particle bombardment, and genome-edited plants were generated from these SAMs. Soybean allergenic gene Gly m Bd 30K was targeted in this study. Many E0 (the first generation of genome-edited) plants in this experiment harbored mutant alleles at the targeted locus. Editing frequency of inducing mutations transmissible to the E1 generation was approximately 0.4% to 4.6% of all E0 plants utilized in various soybean varieties. Furthermore, simultaneous mutagenesis by iPB-RNP method was also successfully performed at other loci. Our results offer a practical approach for both plant regeneration and DNA-free genome editing achieved by delivering RNP into the SAM of dicotyledonous plants.
  • The Accumulation of Metal Ions by a Soy Protein–Inorganic Composite Material
    Masanori Yamada; Maika Ujihara; Tetsuya Yamada
    Journal of Composites Science, 7, 10, 419, 419, MDPI AG, 2023年10月07日, [査読有り]
    研究論文(学術雑誌), Water-soluble soy protein (SP), which contains many acidic amino acids in its structure, was complexed by mixing with a silane coupling agent, 3-glycidoxypropyltrimethoxysilane (GPTMS). These SP−GPTMS composite materials showed stability in water. This property is due to the cross-linking between SP and GPTMS through the ring cleavage reaction of the epoxy group in the GPTMS molecule and an encapsulation of SP into the 3D siloxane network of GPTMS. When the SP−GPTMS composite material was immersed in an aqueous Cu(II) ion solution, the composite material changed from light brown to blue green by the coordination of Cu(II) ions into the SP. Hence, we evaluated the accumulation of heavy ions, rare-earth ions, and light metal ions. The accumulating affinity of metal ions was Cd(II) << Zn(II), Cu(II), Pb(II) < La(III) < Al(III) < Nd(III), In(III) << Mg(II) < Ca(II) ions. In addition, the sorption capacities of Ca(II), Mg(II), In(III), Nd(III), Al(III), La(III), Pb(II), Cu(II), Zn(II), and Cd(II) ions were 700 nmol/mg, 660 nmol/mg, 470 nmol/mg, 470 nmol/mg, 410 nmol/mg, 380 nmol/mg, 350 nmol/mg, 350 nmol/mg, 300 nmol/mg, and 200 nmol/mg, respectively. These properties suggest that the SP−GPTMS composite material has a divalent light metal ion selectivity. Additionally, the accumulative mechanism of the light metal ions was related to the carboxylate group and the hydroxyl group in the composite material.
  • Site-directed mutagenesis of soybean <i>PEAPOD</i> genes using the CRISPR/Cas9 system alters tissue developmental transition
    Jaechol Sim; Yuhei Kanazashi; Tetsuya Yamada
    Plant Biotechnology, 40, 3, 247, 254, Japanese Society for Plant Cell and Molecular Biology, 2023年09月25日, [査読有り], [責任著者]
    研究論文(学術雑誌)
  • Recent advances in the improvement of soybean seed traits by genome editing
    Jaechol Sim; Chikako Kuwabara; Shota Sugano; Kohei Adachi; Tetsuya Yamada
    Plant Biotechnology, 40, 3, 193, 200, Japanese Society for Plant Cell and Molecular Biology, 2023年09月25日, [査読有り], [責任著者]
    研究論文(学術雑誌)
  • Preparation of bioplastic consisting of salmon milt DNA
    Masanori Yamada; Midori Kawamura; Tetsuya Yamada
    Scientific Reports, 12, 1, 7423, Springer Science and Business Media LLC, 2022年12月, [査読有り]
    研究論文(学術雑誌), Abstract

    The microplastic that pollutes the ocean is a serious problem around the world. The bioplastic consisting of biopolymers which is degraded in nature, is one of the strategies to solve this problem. Although the bioplastics consisting of protein, polysaccharide, polylactic acid, etc., have been reported, which consist of DNA, one of the most important materials in the genetic process, have not been reported to the best of our knowledge. In addition, a large amount of DNA-containing materials, such as salmon milts, is discarded as industrial waste around the world. Therefore, we demonstrated the preparation of a bioplastic consisting of salmon milt DNA. The DNA plastic was prepared by the immersion of a DNA pellet in a formaldehyde (HCHO) solution and heating. As a result, the water-stable DNA plastics were obtained at the HCHO concentration of 20% or more. Particularly, the DNA plastic with a 25% HCHO treatment showed water-insoluble, thermally stable, and highly mechanical properties. These are due to the formation of a three-dimensional network via the crosslinking reaction between the DNA chains. In addition, since DNA in plastic possesses the double-stranded structure, these plastics effectively accumulated the DNA intercalator, such as ethidium bromide. Furthermore, the DNA plastics indicated a biodegradable property in a nuclease-containing aqueous solution and the biodegradable stability was able to be controlled by the HCHO concentration. Therefore, salmon milt DNA has shown the potential to be a biodegradable plastic.
  • Oxicam-type nonsteroidal anti-inflammatory drugs enhance Agrobacterium-mediated transient transformation in plants
    Seung-won Choi; Kie Kumaishi; Reiko Motohashi; Harumi Enoki; Wiluk Chacuttayapong; Tadashi Takamizo; Hiroaki Saika; Masaki Endo; Tetsuya Yamada; Aya Hirose; Nobuya Koizuka; Seisuke Kimura; Yaichi Kawakatsu; Hiroyuki Koga; Emi Ito; Ken Shirasu; Yasunori Ichihashi
    Plant Biotechnology, 39, 3, 323, 327, Japanese Society for Plant Cell and Molecular Biology, 2022年09月25日, [査読有り], [国内誌]
    英語, 研究論文(学術雑誌), Agrobacterium-mediated transformation is a key innovation for plant breeding, and routinely used in basic researches and applied biology. However, the transformation efficiency is often the limiting factor of this technique. In this study, we discovered that oxicam-type nonsteroidal anti-inflammatory drugs, including tenoxicam (TNX), increase the efficiency of Agrobacterium-mediated transient transformation. TNX treatment increased the transformation efficiency of Agrobacterium-mediated transformation of Arabidopsis thaliana mature leaves by agroinfiltration. The increase of efficiency by TNX treatment was not observed in dde2/ein2/pad4/sid2 quadruple mutant, indicating that TNX inhibits the immune system mediated by jasmonic acid, ethylene, and salicylic acid against to Agrobacterium. We also found that TNX-treatment is applicable for the transient expression and subcellular localization analysis of fluorescent-tagged proteins in Arabidopsis leaf cells. In addition, we found that TNX increases the efficiency of Agrobacterium-mediated transient transformation of Jatropha. Given that treatment with oxicam compounds is a simple and cost effective method, our findings will provide a new option to overcome limitations associated with Agrobacterium-mediated transformation of various plant species.
  • Genetic analysis of chlorophyll synthesis and degradation regulated by BALANCE of CHLOROPHYLL METABOLISM
    Hiroshi Yamatani; Takeshi Ito; Kenji Nishimura; Tetsuya Yamada; Wataru Sakamoto; Makoto Kusaba
    Plant Physiology, Oxford University Press (OUP), 2022年03月28日, [査読有り]
    研究論文(学術雑誌), Abstract

    Chlorophyll serves a number of essential functions, capturing and converting light energy as a component of photosystem supercomplexes. Chlorophyll degradation during leaf senescence is also required for adequate degeneration of chloroplasts and salvaging of nutrients from senescent leaves. In this study, we performed genetic analysis to determine the functions of BALANCE of CHLOROPHYLL METABOLISM1 (BCM1) and BCM2, which control chlorophyll levels by regulating synthesis and degradation, and STAY-GREEN1 (SGR1, also known as NON-YELLOWING1 [NYE1]) and SGR2, which encode Mg-dechelatase and catalyze chlorophyll a degradation in Arabidopsis (Arabidopsis thaliana). Analysis of bcm1 bcm2 revealed that both BCM1 and BCM2 are involved in the regulation of chlorophyll levels in presenescent leaves and chlorophyll degradation in senescing leaves. Analysis of bcm1 bcm2 nye1 nye2 suggested that BCMs repress chlorophyll-degrading activity in both presenescent and senescing leaves by regulating SGR activity. Furthermore, transactivation analysis and ChIP assay revealed that GOLDEN2-LIKE1 (GLK1), a central transcription factor regulating the expression of genes encoding photosystem-related proteins, such as light-harvesting Chl a/b-binding proteins (LHCPs), directly regulates the transcription of BCM1. LHCPs are stabilized by chlorophyll binding, suggesting that GLKs control the amount of LHCP through transcriptional and post-translational regulation via BCM-mediated chlorophyll-level regulation. Meanwhile, we generated a mutant of the BCM ortholog in lettuce (Lactuca sativa) by genome editing and found that it showed an early yellowing phenotype, but only a slight reduction in chlorophyll in presenescent leaves. Thus, this study revealed a conserved but slightly diversified regulation of chlorophyll and LHCP levels via the GLK-BCM pathway in eudicots.
  • Functional Divergence of G and Its Homologous Genes for Green Pigmentation in Soybean Seeds
    Yusuke Tokumitsu; Takuto Kozu; Hiroshi Yamatani; Takeshi Ito; Haruna Nakano; Ayaka Hase; Hiroki Sasada; Yoshitake Takada; Akito Kaga; Masao Ishimoto; Makoto Kusaba; Taiken Nakashima; Jun Abe; Tetsuya Yamada
    Frontiers in Plant Science, 12, Frontiers Media SA, 2022年01月05日, [査読有り], [責任著者]
    研究論文(学術雑誌), The degradation of chlorophyll in mature soybean seeds is closely related to the development of their yellow color. In this study, we examined G, its homologue G-like (GL), and their mutant alleles and investigated the relationship between these genes and chlorophyll accumulation in the seed coats of mature seeds. Transient expression of G and GL proteins fused with green fluorescent protein revealed that both were localized in plastids. Overexpression of G resulted in the accumulation of chlorophyll in the seed coats and cotyledons of mature seeds, indicating that high expression levels of G result in chlorophyll accumulation that exceeds its metabolism in the seeds of yellow soybean. Analysis of near isogenic lines at the G locus demonstrated a significant difference in the chlorophyll content of the seed coats and cotyledons of mature seeds when G and mutant g alleles were expressed in the d1d2 stay-green genetic background, indicating that the G protein might repress the SGR-independent degradation of chlorophyll. We examined the distribution of mutant alleles at the G and GL loci among cultivated and wild soybean germplasm. The g allele was widely distributed in cultivated soybean germplasm, except for green seed coat soybean lines, all of which contained the G allele. The gl alleles were much fewer in number than the g alleles and were mainly distributed in the genetic resources of cultivated soybean from Japan. None of the landraces and breeding lines investigated in this study were observed to contain both the g and gl alleles. Therefore, in conclusion, the mutation of the G locus alone is essential for establishing yellow soybeans, which are major current soybean breeding lines.
  • Identification and Characterization of an Early Leaf Senescence Gene ELS1 in Soybean
    Hiroshi Yamatani; Titnarong Heng; Tetsuya Yamada; Makoto Kusaba; Akito Kaga
    Frontiers in Plant Science, 12, Frontiers Media SA, 2021年12月16日, [査読有り]
    研究論文(学術雑誌), Early leaf senescence phenotype in soybean could be helpful to shorten the maturation period and prevent green stem disorder. From a high-density mutation library, we identified two early leaf senescence soybean mutant lines, els1-1 (early leaf senescence 1) and els1-2. The chlorophyll contents of both els1-1 and els1-2 were low in pre-senescent leaves. They degraded rapidly in senescent leaves, revealing that ELS1 is involved in chlorophyll biosynthesis during leaf development and chlorophyll degradation during leaf senescence. The causal mutations in els1 were identified by next-generation sequencing-based bulked segregant analysis. ELS1 encodes the ortholog of the Arabidopsis CaaX-like protease BCM1, which is localized in chloroplasts. Soybean ELS1 was highly expressed in green tissue, especially in mature leaves. The accumulation of photosystem I core proteins and light-harvesting proteins in els1 was low even in pre-senescent leaves, and their degradation was accelerated during leaf senescence. These results suggest that soybean ELS1 is involved in both chlorophyll synthesis and degradation, consistent with the findings in Arabidopsis BCM1. The gene els1, characterized by early leaf senescence and subsequent early maturation, does not affect the flowering time. Hence, the early leaf senescence trait regulated by els1 helps shorten the harvesting period because of early maturation characteristics. The els1-1 allele with weakly impaired function of ELS1 has only a small effect on agricultural traits and could contribute to practical breeding.
  • Anhydrous proton-conducting material consisting of basic protein protamine
    Masanori Yamada; Takaaki Sugihara; Tetsuya Yamada
    Journal of Electroanalytical Chemistry, 897, 115586, 115586, Elsevier BV, 2021年09月, [査読有り]
    研究論文(学術雑誌)
  • Wheat α-gliadin and high-molecular-weight glutenin subunit accumulate in different storage compartments of transgenic soybean seed
    Yuki Matsuoka; Tetsuya Yamada; Nobuyuki Maruyama
    Transgenic Research, 31, 1, 43, 58, Springer Science and Business Media LLC, 2021年08月24日, [査読有り]
    研究論文(学術雑誌)
  • Site-directed mutagenesis by biolistic transformation efficiently generates inheritable mutations in a targeted locus in soybean somatic embryos and transgene-free descendants in the T1 generation
    Kohei Adachi; Aya Hirose; Yuhei Kanazashi; Miki Hibara; Toshiyuki Hirata; Masafumi Mikami; Masaki Endo; Sakiko Hirose; Nobuyuki Maruyama; Masao Ishimoto; Jun Abe; Tetsuya Yamada
    Transgenic Research, 30, 1, 77, 89, Springer Science and Business Media LLC, 2021年01月01日, [査読有り], [責任著者], [国際誌]
    英語, 研究論文(学術雑誌), The clustered regularly interspaced short palindromic repeat (CRISPR)/CRISPR-associated endonuclease 9 (Cas9) system is being rapidly developed for mutagenesis in higher plants. Ideally, foreign DNA introduced by this system is removed in the breeding of edible crops and vegetables. Here, we report an efficient generation of Cas9-free mutants lacking an allergenic gene, Gly m Bd 30K, using biolistic transformation and the CRISPR/Cas9 system. Five transgenic embryo lines were selected on the basis of hygromycin resistance. Cleaved amplified polymorphic sequence analysis detected only two different mutations in e all of the lines. These results indicate that mutations were induced in the target gene immediately after the delivery of the exogenous gene into the embryo cells. Soybean plantlets (T0 plants) were regenerated from two of the transgenic embryo lines. The segregation pattern of the Cas9 gene in the T1 generation, which included Cas9-free plants, revealed that a single copy number of transgene was integrated in both lines. Immunoblot analysis demonstrated that no Gly m Bd 30K protein accumulated in the Cas9-free plants. Gene expression analysis indicated that nonsense mRNA decay might have occurred in mature mutant seeds. Due to the efficient induction of inheritable mutations and the low integrated transgene copy number in the T0 plants, we could remove foreign DNA easily by genetic segregation in the T1 generation. Our results demonstrate that biolistic transformation of soybean embryos is useful for CRISPR/Cas9-mediated site-directed mutagenesis of soybean for human consumption.
  • Anhydrous Proton Conduction of Soy Protein
    Yamada M; Y Nagano; T Yamada
    International Journal of Electrochemical Science, 16, 1, 151046, 151046, 2021年01月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Artificially Edited Alleles of the Eukaryotic Translation Initiation Factor 4E1 Gene Differentially Reduce Susceptibility to Cucumber Mosaic Virus and Potato Virus Y in Tomato
    Hiroki Atarashi; Wikum Harshana Jayasinghe; Joon Kwon; Hangil Kim; Yosuke Taninaka; Manabu Igarashi; Kotaro Ito; Tetsuya Yamada; Chikara Masuta; Kenji S. Nakahara
    Frontiers in Microbiology, 11, 564310, 564310, Frontiers Media SA, 2020年12月10日, [査読有り], [国際誌]
    英語, 研究論文(学術雑誌), Eukaryotic translation initiation factors, including eIF4E, are susceptibility factors for viral infection in host plants. Mutation and double-stranded RNA-mediated silencing of tomato eIF4E genes can confer resistance to viruses, particularly members of the Potyvirus genus. Here, we artificially mutated the eIF4E1 gene on chromosome 3 of a commercial cultivar of tomato (Solanum lycopersicum L.) by using CRISPR/Cas9. We obtained three alleles, comprising two deletions of three and nine nucleotides (3DEL and 9DEL) and a single nucleotide insertion (1INS), near regions that encode amino acid residues important for binding to the mRNA 5' cap structure and to eIF4G. Plants homozygous for these alleles were termed 3DEL, 9DEL, and 1INS plants, respectively. In accordance with previous studies, inoculation tests with potato virus Y (PVY; type member of the genus Potyvirus) yielded a significant reduction in susceptibility to the N strain (PVYN), but not to the ordinary strain (PVYO), in 1INS plants. 9DEL among three artificial alleles had a deleterious effect on infection by cucumber mosaic virus (CMV, type member of the genus Cucumovirus). When CMV was mechanically inoculated into tomato plants and viral coat accumulation was measured in the non-inoculated upper leaves, the level of viral coat protein was significantly lower in the 9DEL plants than in the parental cultivar. Tissue blotting of microperforated inoculated leaves of the 9DEL plants revealed significantly fewer infection foci compared with those of the parental cultivar, suggesting that 9DEL negatively affects the initial steps of infection with CMV in a mechanically inoculated leaf. In laboratory tests, viral aphid transmission from an infected susceptible plant to 9DEL plants was reduced compared with the parental control. Although many pathogen resistance genes have been discovered in tomato and its wild relatives, no CMV resistance genes have been used in practice. RNA silencing of eIF4E expression has previously been reported to not affect susceptibility to CMV in tomato. Our findings suggest that artificial gene editing can introduce additional resistance to that achieved with mutagenesis breeding, and that edited eIF4E alleles confer an alternative way to manage CMV in tomato fields.
  • Simultaneous induction of mutant alleles of two allergenic genes in soybean by using site-directed mutagenesis
    Shota Sugano; Aya Hirose; Yuhei Kanazashi; Kohei Adachi; Miki Hibara; Takeshi Itoh; Masafumi Mikami; Masaki Endo; Sakiko Hirose; Nobuyuki Maruyama; Jun Abe; Tetsuya Yamada
    BMC Plant Biology, 20, 1, 513, 513, Springer Science and Business Media LLC, 2020年12月, [査読有り], [責任著者], [国際誌]
    英語, 研究論文(学術雑誌), Abstract

    Background
    Soybean (Glycine max) is a major protein crop, because soybean protein has an amino acid score comparable to that of beef and egg white. However, many allergens have been identified among soybean proteins. A decrease in allergenic protein levels would be useful for expanding the market for soybean proteins and processed foods. Recently, the CRISPR/Cas9 system has been adopted as a powerful tool for the site-directed mutagenesis in higher plants. This system is expected to generate hypoallergenic soybean varieties.




    Results
    We used two guide RNAs (gRNAs) and Agrobacterium-mediated transformation for simultaneous site-directed mutagenesis of two genes encoding the major allergens Gly m Bd 28 K and Gly m Bd 30 K in two Japanese soybean varieties, Enrei and Kariyutaka. We obtained two independent T0 Enrei plants and nine T0 Kariyutaka plants. Cleaved amplified polymorphic sequence (CAPS) analysis revealed that mutations were induced in both targeted loci of both soybean varieties. Sequencing analysis showed that deletions were the predominant mutation type in the targeted loci. The Cas9-free plants carrying the mutant alleles of the targeted loci with the transgenes excluded by genetic segregation were obtained in the T2 and T3 generations. Variable mutational spectra were observed in the targeted loci even in T2 and T3 progenies of the same T0 plant. Induction of multiple mutant alleles resulted in six haplotypes in the Cas9-free mutants derived from one T0 plant. Immunoblot analysis revealed that no Gly m Bd 28 K or Gly m Bd 30 K protein accumulated in the seeds of the Cas9-free plants. Whole-genome sequencing confirmed that a Cas9-free mutant had also no the other foreign DNA from the binary vector. Our results demonstrate the applicability of the CRISPR/Cas9 system for the production of hypoallergenic soybean plants.




    Conclusions
    Simultaneous site-directed mutagenesis by the CRISPR/Cas9 system removed two major allergenic proteins from mature soybean seeds. This system enables rapid and efficient modification of seed components in soybean varieties.


  • Characterization of chlorophyll-deficient soybean [Glycine max (L.) Merr.] mutants obtained by ion-beam irradiation reveals concomitant reduction in isoflavone levels
    Yui Shiroshita; Mashiro Yuhazu; Yoshihiro Hase; Tetsuya Yamada; Jun Abe; Akira Kanazawa
    Genetic Resources and Crop Evolution, 68, 3, 1213, 1223, 2020年11月17日, [査読有り]
    英語, 研究論文(学術雑誌)
  • Preparation of bioplastic using soy protein
    Masanori Yamada; Sakura Morimitsu; Eiji Hosono; Tetsuya Yamada
    International Journal of Biological Macromolecules, 149, 1077, 1083, 2020年04月, [査読有り]
    英語, 研究論文(学術雑誌)
  • A space-saving visual screening method, Glycine max FAST, for generating transgenic soybean
    Kosei Iwabuchi; Takashi L. Shimada; Tetsuya Yamada; Ikuko Hara-Nishimura
    Plant Signaling & Behavior, 15, 2, 1722911, 1722911, Informa UK Limited, 2020年02月01日, [査読有り]
    研究論文(学術雑誌)
  • A Soybean Deletion Mutant That Moderates the Repression of Flowering by Cool Temperatures.
    Jingyu Zhang; Meilan Xu; Maria Stefanie Dwiyanti; Satoshi Watanabe; Tetsuya Yamada; Yoshihiro Hase; Akira Kanazawa; Takashi Sayama; Masao Ishimoto; Baohui Liu; Jun Abe
    Frontiers in plant science, 11, 429, 429, 2020年, [査読有り], [国際誌]
    英語, 研究論文(学術雑誌), Ambient growing temperature and photoperiod are major environmental stimuli that summer annual crops use to adjust their reproductive phenology so as to maximize yield. Variation in flowering time among soybean (Glycine max) cultivars results mainly from allelic diversity at loci that control photoperiod sensitivity and FLOWERING LOCUS T (FT) orthologs. However, variation in the thermal regulation of flowering and its underlying mechanisms are poorly understood. In this study, we identified a novel mutant (ef1) that confers altered thermal regulation of flowering in response to cool ambient temperatures. Mapping analysis with simple sequence repeat (SSR) markers located the mutation in the upper part of chromosome 19, where no QTL for flowering has been previously reported. Fine-mapping and re-sequencing revealed that the mutation was caused by deletion of a 214 kbp genomic region that contains 11 annotated genes, including CONSTANS-LIKE 2b (COL2b), a soybean ortholog of Arabidopsis CONSTANS. Comparison of flowering times under different photo-thermal conditions revealed that early flowering in the mutant lines was most distinct under cool ambient temperatures. The expression of two FT orthologs, FT2a and FT5a, was dramatically downregulated by cool temperature, but the magnitude of the downregulation was lower in the mutant lines. Cool temperatures upregulated COL2b expression or delayed peak expression, particularly at the fourth trifoliate-leaf stage. Intriguingly, they also upregulated E1, a soybean-specific repressor of FT orthologs. Our results suggest that the ef1 mutation is involved in thermal regulation of flowering in response to cool ambient temperature, and the lack of COL2b in the mutant likely alleviates the repression of flowering by cool temperature. The ef1 mutant can be used as a novel gene resource in breeding soybean cultivars adapted to cool climate and in research to improve our understanding of thermal regulation of flowering in soybean.
  • Identification of quantitative trait loci for increased α-tocopherol biosynthesis in wild soybean using a high-density genetic map.
    Park C; Dwiyanti MS; Nagano AJ; Liu B; Yamada T; Abe J
    BMC plant biology, 19, 1, 510, 2019年11月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Soybean (Glycine max L.) triacylglycerol lipase GmSDP1 regulates the quality and quantity of seed oil
    Kanai, Masatake; Yamada, Tetsuya; Hayashi, Makoto; Mano, Shoji; Nishimura, Mikio
    SCIENTIFIC REPORTS, 9, 2019年06月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Functional divergence between soybean FLOWERING LOCUS T orthologues, FT2a and FT5a, in post-flowering stem growth
    Ryoma Takeshima; Haiyang Nan; Kohei Harigai; Lidong Dong; Jianghui Zhu; Sijia Lu; Meilan Xu; Noriko Yamagishi; Nobuyuki Yoshikawa; Baohui Liu; Tetsuya Yamada; Fanjiang Kong; Jun Abe
    Journal of Experimental Botany, 70, 15, 3941, 3953, Oxford University Press ({OUP}), 2019年04月, [査読有り]
  • Recessive resistance governed by a major quantitative trait locus restricts clover yellow vein virus in mechanically but not graft-inoculated cultivated soybeans.
    Abe J; Wang Y; Yamada T; Sato M; Ono T; Atsumi G; Abe J; Hajimorad MR; Nakahara KS
    Molecular plant-microbe interactions : MPMI, 32, 8, 1026, 1037, American Phytopathological Society(APS), 2019年03月, [査読有り]
    英語
  • ダイズ種子の登熟に伴う貯蔵成分と細胞小器官の変化
    依田 七海; 長田 亜梨沙; 鈴木 卓; 平田 聡之; 伊藤 利章; 阿部 純; 山田 哲也
    日本育種学会・日本作物学会北海道談話会会報, 60, 4, 5, 日本育種学会・日本作物学会北海道談話会, 2019年
    日本語
  • CRISPR/Cas9-Mediated Editing of Genes Encoding rgs-CaM-like Proteins in Transgenic Potato Plants
    Zhila Osmani; Shinnosuke Jin; Masafumi Mikami; Masaki Endo; Hiroki Atarashi; Kaien Fujino; Tetsuya Yamada; Kenji S. Nakahara
    Methods in Molecular Biology, 2028, 153, 165, Springer New York, 2019年, [査読有り], [国際誌]
    英語, 論文集(書籍)内論文, A tobacco calmodulin-like protein, rgs-CaM, has been shown to interact with viruses in a variety of ways; it contributes to geminivirus infections but is also involved in primed immunity to the cucumber mosaic virus. Sequence similarity searches revealed several calmodulin-like proteins similar to rgs-CaM (rCML) in Arabidopsis and other Solanaceae plants, including potato (Solanum tuberosum). To analyze the functions of each rCML, mutations were introduced into potato rCMLs using the CRISPR/Cas9 system. Here, we describe our protocol of the CRISPR/Cas9-mediated targeted mutagenesis in stably transformed potato plants.
  • Structural features of the aleurone layer of the seed coat associated with imbibition injury in soybean
    Kei Sato; Yutaka Jitsuyama; Tetsuya Yamada; Baohui Liu; Jun Abe
    Breeding Science, 69, 2, 364, 370, Japanese Society of Breeding, 2019年, [査読有り]
    研究論文(学術雑誌)
  • Characterization and quantitative trait locus mapping of late-flowering from a Thai soybean cultivar introduced into a photoperiod-insensitive genetic background.
    Sun F; Xu M; Park C; Dwiyanti MS; Nagano AJ; Zhu J; Watanabe S; Kong F; Liu B; Yamada T; Abe J
    PloS one, 14, 12, e0226116, 2019年, [査読有り]
    英語, 研究論文(学術雑誌)
  • Loss of Function of the E1-Like-b Gene Associates With Early Flowering Under Long-Day Conditions in Soybean
    Jianghui Zhu; Ryoma Takeshima; Kohei Harigai; Meilan Xu; Fanjiang Kong; Baohui Liu; Akira Kanazawa; Tetsuya Yamada; Jun Abe
    Frontiers in Plant Science, 9, 1867, Frontiers Media {SA}, 2019年01月, [査読有り]
  • A vacuolar sorting receptor-independent sorting mechanism for storage vacuoles in soybean seeds
    Nobuyuki Maruyama; Yuki Matsuoka; Kazunori Yokoyama; Kyoko Takagi; Tetsuya Yamada; Hisakazu Hasegawa; Teruhiko Terakawa; Masao Ishimoto
    Scientific Reports, 8, 1, 1108, Nature Publishing Group, 2018年12月01日, [査読有り]
    英語, 研究論文(学術雑誌)
  • Simultaneous site-directed mutagenesis of duplicated loci in soybean using a single guide RNA
    Yuhei Kanazashi; Aya Hirose; Ippei Takahashi; Masafumi Mikami; Masaki Endo; Sakiko Hirose; Seiichi Toki; Akito Kaga; Ken Naito; Masao Ishimoto; Jun Abe; Tetsuya Yamada
    Plant Cell Reports, 37, 3, 553, 563, Springer Verlag, 2018年03月01日, [査読有り]
    英語, 研究論文(学術雑誌)
  • Preparation of water-insoluble and biochemically-stable RNA hybrid material.
    Yamada M; C Tohyama; T Yamada
    Polymer for Advanced Technologies, 29, 12, 2890, 2898, 2018年, [査読有り]
    英語, 研究論文(学術雑誌)
  • Development of a high-density linkage map and chromosome segment substitution lines for Japanese soybean cultivar Enrei.
    Watanabe S; Shimizu T; Machita K; Tsubokura Y; Xia Z; Yamada T; Hajika M; Ishimoto M; Katayose Y; Harada K; Kaga A
    DNA research : an international journal for rapid publication of reports on genes and genomes, 25, 2, 123, 136, 2017年11月, [査読有り], [国際誌]
    英語, 研究論文(学術雑誌), Using progeny of a cross between Japanese soybean Enrei and Chinese soybean Peking, we developed a high-density linkage map and chromosomal segment substitution lines (CSSLs). The map consists of 2,177 markers with polymorphism information for 32 accessions and provides a detailed genetic framework for these markers. The marker order on the linkage map revealed close agreement with that on the chromosome-scale assembly, Wm82.a2.v1. The differences, especially on Chr. 5 and Chr. 11, in the present map provides information to identify regions in the genome assembly where additional information is required to resolve marker order and assign remaining scaffolds. To cover the entire soybean genome, we used 999 BC3F2 backcross plants and selected 103 CSSLs carrying chromosomal segments from Peking in the genetic background of Enrei. Using these low-genetic-complexity resources, we dissected variation in traits related to flowering, maturity and yield into approximately 50 reproducible quantitative trait loci (QTLs) and evaluated QTLs with small genetic effects as single genetic factors in a uniform genetic background. CSSLs developed in this study may be good starting material for removing the unfavourable characteristics of Peking during pre-breeding and for isolation of genes conferring disease and stress resistance that have not yet been characterized.
  • Identification of quantitative trait loci for flowering time by a combination of restriction siteassociated DNA sequencing and bulked segregant analysis in soybean.
    Watanabe S; C Tsukamoto; T Oshita; T Yamada; T Anai; A Kaga
    Breeding Science, 67, 3, 277, 285, 2017年06月, [査読有り]
    英語, 研究論文(学術雑誌)
  • RNA silencing in the life cycle of soybean: multiple restriction systems and spatiotemporal variation associated with plant architecture
    Ayumi Mori; Hiroshi Sato; Megumi Kasai; Tetsuya Yamada; Akira Kanazawa
    TRANSGENIC RESEARCH, 26, 3, 349, 362, 2017年06月, [査読有り]
    英語, 研究論文(学術雑誌)
  • The Non-Mendelian Green Cotyledon Gene in Soybean Encodes a Small Subunit of Photosystem II
    Kaori Kohzuma; Yutaka Sato; Hisashi Ito; Ayako Okuzaki; Mai Watanabe; Hideki Kobayashi; Michiharu Nakano; Hiroshi Yamatani; Yu Masuda; Yumi Nagashima; Hiroyuki Fukuoka; Tetsuya Yamada; Akira Kanazawa; Keisuke Kitamura; Yutaka Tabei; Masahiko Ikeuchi; Wataru Sakamoto; Ayumi Tanaka; Makoto Kusaba
    PLANT PHYSIOLOGY, 173, 4, 2138, 2147, 2017年04月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Isolation and molecular characterization of a Lotus japonicus R2R3-MYB subgroup 7 transcription factor gene
    Satoru Kunihiro; Daigo Tanabe; Yuiko Niwa; Keisuke Kitamura; Jun Abe; Tetsuya Yamada
    PLANT BIOTECHNOLOGY, 34, 1, 45, 49, 2017年03月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Frequent generation of mutants with coincidental changes in multiple traits via ion-beam irradiation in soybean
    Shun Mikuriya; Megumi Kasai; Kenta Nakashima; Natasia; Yoshihiro Hase; Tetsuya Yamada; Jun Abe; Akira Kanazawa
    Genes and Genetic Systems, 92, 3, 153, 161, Genetics Society of Japan, 2017年, [査読有り]
    英語, 研究論文(学術雑誌)
  • A soybean quantitative trait locus that promotes flowering under long days is identified as FT5a, a FLOWERING LOCUS T ortholog
    Ryoma Takeshima; Takafumi Hayashi; Jianghui Zhu; Chen Zhao; Meilan Xu; Naoya Yamaguchi; Takashi Sayama; Masao Ishimoto; Lingping Kong; Xinyi Shi; Baohui Liu; Zhixi Tian; Tetsuya Yamada; Fanjiang Kong; Jun Abe
    JOURNAL OF EXPERIMENTAL BOTANY, 67, 17, 5247, 5258, 2016年09月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Natural diversity of seed alpha-tocopherol ratio in wild soybean (Glycine sofa) germplasm collection
    Maria Stefanie Dwiyanti; Shouhei Maruyama; Mari Hirono; Masako Sato; Euiho Park; Sei Hyung Yoon; Tetsuya Yamada; Jun Abe
    BREEDING SCIENCE, 66, 4, 653, 657, 2016年09月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Ncl synchronously regulates Na+,K+, and Cl− in soybean and greatly increases the grain yield in saline field conditions.
    Do TD; H Chen; HTT Vu; A Hamwieh; T Yamada; T Sato; Y Yan; H Cong; M Shono; K Suenaga; D Xu
    Scientific Reports, 6, 19147, 2016年01月, [査読有り]
    英語, 研究論文(学術雑誌)
  • A recessive allele for delayed flowering at the soybean maturity locus E9 is a leaky allele of FT2a, a FLOWERING LOCUS T ortholog
    Chen Zhao; Ryoma Takeshima; Jianghui Zhu; Meilan Xu; Masako Sato; Satoshi Watanabe; Akira Kanazawa; Baohui Liu; Fanjiang Kong; Tetsuya Yamada; Jun Abe
    BMC PLANT BIOLOGY, 16, 20, 2016年01月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Biochemical and molecular characterization of orange- and tangerine-colored rice calli
    Atsushi Ishihara; Kazuhiko Ohishi; Tetsuya Yamada; Mari Shibata-Hatta; Yuko Arai-Kichise; Satoru Watanabe; Hirofumi Yoshikawa; Kyo Wakasa
    PLANT BIOTECHNOLOGY, 32, 3, 193, +, 2015年09月, [査読有り]
    英語, 研究論文(学術雑誌)
  • The Soybean-Specific Maturity Gene E1 Family of Floral Repressors Controls Night-Break Responses through Down-Regulation of FLOWERING LOCUS T Orthologs
    Meilan Xu; Noriko Yamagishi; Chen Zhao; Ryoma Takeshima; Megumi Kasai; Satoshi Watanabe; Akira Kanazawa; Nobuyuki Yoshikawa; Baohui Liu; Tetsuya Yamada; Jun Abe
    PLANT PHYSIOLOGY, 168, 4, 1735, U1080, 2015年08月, [査読有り]
    英語, 研究論文(学術雑誌)
  • A single-nucleotide polymorphism in an endo-1,4-β-glucanase gene controls seed coat permeability in soybean.
    Jang SJ; M Sato; K Sato; Y Jitsuyama; K Fujino; H Mori; R Takahashi; ER Benitez; B Liu; T Yamada; J Abe
    PLoS One, 10, 6, e0128527, 2015年06月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Knockdown of the 7S globulin subunits shifts distribution of nitrogen sources to the residual protein fraction in transgenic soybean seeds
    Tetsuya Yamada; Yoshihiro Mori; Kazuho Yasue; Nobuyuki Maruyama; Keisuke Kitamura; Jun Abe
    PLANT CELL REPORTS, 33, 12, 1963, 1976, 2014年12月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Double-Stranded DNA Stereoselectively Promotes Aggregation of Amyloid-Like Fibrils and Generates Peptide/DNA Matrices
    Masanori Yamada; Sachiko Hara; Tetsuya Yamada; Fumihiko Katagiri; Kentaro Hozumi; Motoyoshi Nomizu
    BIOPOLYMERS, 102, 6, 465, 472, 2014年11月, [査読有り]
    英語, 研究論文(学術雑誌)
  • A Green-Cotyledon/Stay-Green Mutant Exemplifies the Ancient Whole-Genome Duplications in Soybean
    Michiharu Nakano; Tetsuya Yamada; Yu Masuda; Yutaka Sato; Hideki Kobayashi; Hiroaki Ueda; Ryouhei Morita; Minoru Nishimura; Keisuke Kitamura; Makoto Kusaba
    PLANT AND CELL PHYSIOLOGY, 55, 10, 1763, 1771, 2014年10月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Immobilization of double-stranded DNA onto glass beads by psolaren
    Masanori Yamada; Yuka Kanamori; Tetsuya Yamada
    INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES, 60, 39, 44, 2013年09月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Genetic variation in four maturity genes affects photoperiod insensitivity and PHYA-regulated post-flowering responses of soybean
    Meilan Xu; Zeheng Xu; Baohui Liu; Fanjiang Kong; Yasutaka Tsubokura; Satoshi Watanabe; Zhengjun Xia; Kyuya Harada; Akira Kanazawa; Testuya Yamada; Jun Abe
    BMC PLANT BIOLOGY, 13, 91, 2013年06月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Preparation of DNA-polyintercalator conjugate and its functional property
    Masanori Yamada; Ayaka Okumoto; Tetsuya Yamada
    INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES, 51, 3, 215, 220, 2012年10月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Positional cloning and characterization reveal the molecular basis for soybean maturity locus E1 that regulates photoperiodic flowering
    Zhengjun Xia; Satoshi Watanabe; Tetsuya Yamada; Yasutaka Tsubokura; Hiroko Nakashima; Hong Zhai; Toyoaki Anai; Shusei Sato; Toshimasa Yamazaki; Shixiang Lu; Hongyan Wu; Satoshi Tabata; Kyuya Harada
    PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 109, 32, E2155, E2164, 2012年08月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Positional cloning and characterization reveal the molecular basis for soybean maturity locus E1, which regulates photoperiodic flowering
    Zhengjun Xia; Satoshi Watanabe; Tetsuya Yamada; Yasutaka Tsubokura; Hiroko Nakashima; Hong Zhai; Toyoaki Anai; Shusei Sato; Toshimasa Yamazaki; Shixiang Lu; Hongyan Wu; Satoshi Tabata; Kyuya Harada
    Proc. Natl. Acad. Sci. USA, 109, 32, E2155, E2164, 2012年08月, [査読有り]
    英語
  • Synthesis of DNA intercalator-immobilized cyclodextrin and interaction with double-stranded DNA: Utilization of DNA-cyclodextrin conjugated material as an environmental remediation material
    Masanori Yamada; Masamitsu Inoue; Tetsuya Yamada
    POLYMER CHEMISTRY, 3, 5, 1291, 1299, 2012年, [査読有り]
    英語, 研究論文(学術雑誌)
  • Recent advances in soybean transformation and their application to molecular breeding and genomic analysis.
    Yamada T; Takagi K; Ishimoto M
    Breeding science, 61, 5, 480, 494, 5, 2012年01月, [査読有り]
    英語
  • Genetic variation of γ-tocopherol methyltransferase gene contributes to elevated α-tocopherol content in soybean seeds.
    Dwiyanti MS; Yamada T; Sato M; Abe J; Kitamura K
    BMC plant biology, 11, 152, 2011年11月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Establishment of an efficient in vitro culture and particle bombardment-mediated transformation systems in Miscanthus sinensis Anderss., a potential bioenergy crop
    Xun Wang; Tetsuya Yamada; Fan-Jiang Kong; Yuki Abe; Yoichiro Hoshino; Hiroko Sato; Tadashi Takamizo; Akira Kanazawa; Toshihiko Yamada
    GLOBAL CHANGE BIOLOGY BIOENERGY, 3, 4, 322, 332, 2011年08月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Optimization of ion-beam irradiation for mutagenesis in soybean: effects on plant growth and production of visibly altered mutants
    Sachiko Arase; Yoshihiro Hase; Jun Abe; Megumi Kasai; Tetsuya Yamada; Keisuke Kitamura; Issay Narumi; Atsushi Tanaka; Akira Kanazawa
    PLANT BIOTECHNOLOGY, 28, 3, 323, 329, 2011年, [査読有り]
    英語, 研究論文(学術雑誌)
  • Two Coordinately Regulated Homologs of FLOWERING LOCUS T Are Involved in the Control of Photoperiodic Flowering in Soybean
    Fanjiang Kong; Baohui Liu; Zhengjun Xia; Shusei Sato; Bo Min Kim; Satoshi Watanabe; Tetsuya Yamada; Satoshi Tabata; Akira Kanazawa; Kyuya Harada; Jun Abe
    PLANT PHYSIOLOGY, 154, 3, 1220, 1231, 2010年11月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Establishment of new method for analysis of starch contents and varietal differences in soybean seeds
    Woo-Hyeun Jeong; Kyuya Harada; Tetsuya Yamada; Jun Abe; Keisuke Kitamura
    BREEDING SCIENCE, 60, 2, 160, 163, 2010年06月, [査読有り]
    英語
  • The Soybean Stem Growth Habit Gene Dt1 Is an Ortholog of Arabidopsis TERMINAL FLOWER1
    Baohui Liu; Satoshi Watanabe; Tomoo Uchiyama; Fanjiang Kong; Akira Kanazawa; Zhengjun Xia; Atsushi Nagamatsu; Maiko Arai; Tetsuya Yamada; Keisuke Kitamura; Chikara Masuta; Kyuya Harada; Jun Abe
    PLANT PHYSIOLOGY, 153, 1, 198, 210, 2010年05月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Cotyledonary node pre-wounding with a micro-brush increased frequency of Agrobacterium-mediated transformation in soybean
    Tetsuya Yamada; Satoshi Watanabe; Maiko Arai; Kyuya Harada; Keisuke Kitamura
    PLANT BIOTECHNOLOGY, 27, 2, 217, 220, 2010年, [査読有り]
    英語, 研究論文(学術雑誌)
  • Spatial and temporal control of transcription of the soybean beta-conglycinin alpha subunit gene is conferred by its proximal promoter region and accounts for the unequal distribution of the protein during embryogenesis
    Yusuke Imoto; Tetsuya Yamada; Keisuke Kitamura; Akira Kanazawa
    GENES & GENETIC SYSTEMS, 83, 6, 469, 476, 2008年12月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Genetic analysis and biochemical characterization of the high lutein trait of wild soybean (Glycine soja Sieb. et Zucc.)
    Kyohei Kanamaru; Shaodong Wang; Tetsuya Yamada; Jun Abe; Keisuke Kitamura
    BREEDING SCIENCE, 58, 4, 393, 400, 2008年12月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Genetic relationship between lipid content and linolenic acid concentration in soybean seeds
    Masayuki Shibata; Kiyohiko Takayama; Aya Ujiie; Tetsuya Yamada; Jun Abe; Keisuke Kitamura
    BREEDING SCIENCE, 58, 4, 361, 366, 2008年12月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Mutation of a rice gene encoding a phenylalanine biosynthetic enzyme results in accumulation of phenylalanine and tryptophan
    Tetsuya Yamada; Fumio Matsuda; Koji Kasai; Shuichi Fukuoka; Keisuke Kitamura; Yuzuru Tozawa; Hisashi Miyagawa; Kyo Wakasa
    PLANT CELL, 20, 5, 1316, 1329, 2008年05月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Simultaneous accumulation of high contents of α-tocopherol and lutein is possible in seeds of soybean (Glycine max (L.) Merr.).
    Wang S; K Kanamaru; W Li; J Abe; T Yamada; K Kitamura
    Breeding Science, 57, 4, 297, 304, 2007年12月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Production of transgenic plants and their early seed set in Japanese soybean variety, Kariyutaka
    Hiroshi Sato; Tetsuya Yamada; Yohichi Kita; Masao Ishimoto; Keisuke Kitamura
    PLANT BIOTECHNOLOGY, 24, 5, 533, 536, 2007年12月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Genetic Analysis of High .ALPHA.-tocopherol Content in Soybean Seeds
    DWIYANTI Maria Stefanie; UJIIE Aya; THUY Le Thi Bich; YAMADA Tetsuya; KITAMURA Keisuke
    Breed Sci, 57, 1, 23-28 (J-STAGE), 28, Japanese Society of Breeding, 2007年
    英語, Tocopherols, known as members of vitamin E, are the major lipophilic antioxidants in soybean. Since soybean seeds contain a low concentration of α-tocopherol (α-Toc), the tocopherol isoform with the highest vitamin E activity, some breeding efforts have been implemented to increase the α-tocopherol content in the seeds. In the present study, we used F2 seed and F2 plant (F3 seeds) populations derived from a cross between a variety with a high α-tocopherol content, Keszthelyi A.S. (α-Toc 20–30%) and a Japanese cultivar, Ichihime (α-Toc < 10%) for genetic analysis of the high α-tocopherol concentration. There was no significant correlation between the α-tocopherol and total tocopherol contents in the F2 plant (F3 seeds) population, suggesting that the α-tocopherol and total tocopherol contents were regulated independently in the seeds. Therefore, it may be possible to increase the α-tocopherol concentration without affecting the total tocopherol content. Broad-sense heritability value for the α-tocopherol concentration trait was estimated to be 0.645 in the F2 seeds, suggesting that the α-tocopherol concentration trait was highly heritable. Chi-square goodness-of-fit test for evaluating the relationship between genotype of certain SSR markers and the α-tocopherol concentration showed that the Sat_243 and Sat_167 markers (linkage group K) were significantly associated with the α-tocopherol concentration (P < 0.05). These markers could be used for marker-assisted selection to breed soybean cultivars with high α-tocopherol concentrations. Analysis of the F2 seeds and the F2 plants (F3 seeds) for tocopherol composition showed that there was a significantly negative correlation between the α-tocopherol and γ-tocopherol concentrations, suggesting that the activity of γ-tocopherol methyltransferase, the enzyme that converts γ-tocopherol to α-tocopherol, is high in individuals with a high α-tocopherol concentration.
  • High-level tryptophan accumulation in seeds of transgenic rice and its limited effects on agronomic traits and seed metabolite profile
    Kyo Wakasa; Hisakazu Hasegawa; Hiroshi Nemoto; Fumio Matsuda; Haruna Miyazawa; Yuzuru Tozawa; Keiko Morino; Akira Komatsu; Tetsuya Yamada; Teruhiko Terakawa; Hisashi Miyagawa
    JOURNAL OF EXPERIMENTAL BOTANY, 57, 12, 3069, 3078, 2006年09月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Identification and characterization of wild soybean (Glycine soja Sieb. et Zecc.) strains with high lutein content
    Kyohei Kanamaru; Shaodong Wang; Jun Abe; Tetsuya Yamada; Keisuke Kitamura
    BREEDING SCIENCE, 56, 3, 231, 234, 2006年09月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Chracterization of the tryptophan over-producing potato expressing rice anthranilate synthase α subunit (OASA1D) gene.
    Matsuda F; Yamada T; Miyazawa H; Miyagawa H; Wakasa K
    Planta, 222, 3, 535, 545, 2005年10月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Identification of soybean varieties with high levels of -tocopherol content.
    Ujiie A; Yamada T; Fujimoto K; Endo Y; Kitamura K
    Breeding Science, 55, 2, 123, 125, 2005年06月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Use of a feedback-insensitive  subunit of anthranilate synthase as a selectable marker for transformation of rice and potato.
    Yamada T; Tozawa Y; Hasegawa H; Terakawa T; Ohkawa Y; Wakasa K
    Molecular Breeding, 14, 4, 363, 373, Springer Netherlands, 2005年, [査読有り]
    英語, 研究論文(学術雑誌)
  • A selectable marker using cytochrome P450 monooxygenases for Arabidopsis transformation
    Hideyuki Inui; Ryu Yamada; Tetsuya Yamada; Yasunobu Ohkawa; Hideo Ohkawa
    Plant Biotechnology, 22, 4, 281, 286, Japanese Society for Plant Cell and Molecular Biology, 2005年, [査読有り]
    英語, 研究論文(学術雑誌)
  • Enhancement of metabolizing herbicides in young tubers of transgenic potato plants with the rat CYP1A1 gene
    T Yamada; T Ishige; N Shiota; H Inui; H Ohkawa; Y Ohkawa
    THEORETICAL AND APPLIED GENETICS, 105, 4, 515, 520, 2002年09月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Inducible cross-tolerance to herbicides in transgenic potato plants with the rat CYP1A1 gene
    T. Yamada; Y. Ohashi; M. Ohshima; H. Inui; N. Shiota; H. Ohkawa; Y. Ohkawa
    Theoretical and Applied Genetics, 104, 2-3, 308, 314, 2002年, [査読有り]
    英語, 研究論文(学術雑誌)
  • Ultra-simple DNA extraction method for marker-assisted selection using microsatellite markers in rice
    Nobuyuki Ikeda; Nonnatus S. Bautista; Tetsuya Yamada; Osamu Kamijima; Takashige Ishii
    Plant Molecular Biology Reporter, 19, 1, 27, 32, Springer Science and Business Media LLC, 2001年03月, [査読有り]
    研究論文(学術雑誌)
  • Inheritance of Morphological Characters and Glycoalkaloids in Potatoes of Somatic Hybrids between DihaploidSolanum acauleand TetraploidSolanumtuberosum
    Nobuyuki Kozukue; Shuji Misoo; Tetsuya Yamada; Osamu Kamijima; Mendel Friedman
    Journal of Agricultural and Food Chemistry, 47, 10, 4478, 4483, American Chemical Society (ACS), 1999年10月, [査読有り]
    研究論文(学術雑誌)
  • Cytological and molecular characterization of BC1 progeny from two somatic hybrids between dihaploid Solanum acaule and tetraploid S. tuberosum
    T Yamada; K Hosaka; N Kaide; K Nakagawa; S Misoo; O Kamijima
    Genome, 41, 6, 743, 750, Canadian Science Publishing, 1998年12月01日, [査読有り]
    研究論文(学術雑誌), Two hexaploid somatic hybrids, DA12-3 (2n = 68) and DA28 (2n = 74), derived from cell fusion between dihaploid Solanum acaule and tetraploid Solanum tuberosum, were crossed with S. tuberosum. Two BC1 families, DA12T and DA28T, were generated, each containing 25 plants. Although the average of somatic chromosome numbers fitted hypothetical numbers assuming equal separation, considerable variation was found: 2n = 54-62 in DA12T and 2n = 58-65 in DA28T. Fifty-two of 80 RFLP single-copy probes generated 108 marker bands specific for S. acaule, by which BC1 progeny were analyzed. The segregation of marker bands from at least 44 probes was explained by two alleles per locus, which had to be heterozygous in dihaploid S. acaule and maintained in homozygous condition in homoeologous chromosomes of tetraploid S. acaule. On average, 73.7% of the chromosomes derived from S. acaule were detected as recombinants, suggesting that frequent homoeologous recombination occurred between S. acaule and S. tuberosum chromosomes. Therefore, S. acaule germplasm can be effectively transferred to the cultivated potato gene pool through backcrossing hexaploid somatic hybrids with S. tuberosum. In both BC1 families, S. acaule chromosomes 3, 4, 6, and 11 were detected as recombinants with higher frequencies (84-98%) than those of chromosomes 9 and 10 (60 and 58%, respectively), suggesting that chromosomal differentiation exists between S. acaule genomes.Key words: hexaploid somatic hybrids, Solanum acaule, homoeologous recombination, RFLP markers.
  • Nuclear genome constitution and other characteristics of somatic hybrids between dihaploid Solanum acaule and tetraploid S. tuberosum.
    Tetsuya Yamada; Kazuyoshi Hosaka; Kumi Nakagawa; Noriyo Kaide; Shuji Misoo; Osamu Kamijima
    Euphytica, 102, 2, 239, 246, Springer Science and Business Media LLC, 1998年, [査読有り]
    研究論文(学術雑誌)
  • Characterization of Somatic Hybrids between Tetraploid Solanum tuberosum L. and Dihaploid S. acaule
    Tetsuya Yamada; Shuji Misoo; Takashige Ishii; Yasuhiro Ito; Keigo Takaoka; Osamu Kamijima
    Japanese Journal of Breeding, 47, 3, 229, 236, Japanese Society of Breeding, 1997年09月01日, [査読有り]
    研究論文(学術雑誌)
■ その他活動・業績
■ 書籍等出版物
  • 豆類の百科事典
    国分, 牧衛; 石本, 政男; 村本, 光二; 加藤, 淳; 谷口, 亜樹子, 豆類の遺伝子組換え技術,豆類のゲノム編集技術
    朝倉書店, 2024年05月, 9784254400267, xiv, 516, 3p, 図版 [8] p, 日本語
  • 失敗を防ぐコツが満載 植物のゲノム編集 実験プロトコール
    ダイズの標的変異
    化学同人, 2022年12月, 9784759820881, [共著]
  • ひとりではじめる植物バイオテクノロジー入門 : 組織培養からゲノム編集まで
    田部井, 豊; 七里, 吉彦; 三柴, 啓一郎; 安本, 周平, ダイズの形質転換およびゲノム編集
    国際文献社, 2022年03月, 9784910603032, i, 408p, 日本語, [分担執筆]
  • ゲノム編集技術を応用した製品開発とその実用化
    技術情報協会, P.554-560
    技術情報協会, 2021年02月, 9784861048272, 602p, 日本語, [分担執筆]
  • アグリバイオ ダイズ成分の機能と育種
    P.28-32
    北隆館, 2020年11月, [分担執筆]
  • 形質転換プロトコール
    田部井, 豊, P.40-57
    化学同人, 2012年09月, 9784759814859, xviii, 412p, 日本語, [分担執筆]
■ 主な担当授業
  • 農業生物学特論, 2024年, 修士課程, 農学院
  • 農業生物学特論演習, 2024年, 修士課程, 農学院
  • 一般教育演習(フレッシュマンセミナー), 2024年, 学士課程, 全学教育
  • 生物資源科学実験Ⅰ, 2024年, 学士課程, 農学部
  • 工芸作物学, 2024年, 学士課程, 農学部
■ 所属学協会
  • 日本植物細胞分子生物学会
  • 日本育種学会
■ 共同研究・競争的資金等の研究課題
  • アズキに学ぶダイズの育種ー裂莢抵抗性の最大化ー
    科学研究費助成事業
    2024年04月01日 - 2027年03月31日
    高橋 有; 坂井 寛章; 山田 哲也
    日本学術振興会, 基盤研究(B), 国立研究開発法人農業・食品産業技術総合研究機構, 24K01736
  • Neo-domesticationによるマメ科ストレス耐性作物の開発
    科学研究費助成事業 基盤研究(B)
    2019年07月 - 2022年03月
    高橋 有; 坂井 寛章; 友岡 憲彦; 山田 哲也
    本研究の目的は、作物にストレス耐性を付与するという従来の発想を逆転し、野生種に栽培化形質を付与することで、新たなストレス耐性作物を開発することにある。この育種戦略「Neo-domestication」を加速するために、本研究ではマメ科植物において重要な栽培化形質である非休眠性、非裂莢性、器官巨大化の責任遺伝子の候補を同定した。
    日本学術振興会, 基盤研究(B), 国立研究開発法人農業・食品産業技術総合研究機構, 19KT0016
  • 脱脂ダイズタンパク質を利用した新バイオマス素材の創製
    科学研究費助成事業 挑戦的研究(萌芽)
    2019年06月 - 2021年03月
    山田 哲也; 山田 真路
    ダイズタンパク質を利用して新たなバイオマス素材を創成するため,脱脂ダイズを用いてホルムアルデヒドの架橋を介してバイオプラスチックの試作を行った。加えて,酵素処理を行うことで本プラスチックの構造が大きく損なわれることを確認した。
    従来のタンパク質組成から大きく逸脱したダイズ材料を作製するため,RNAiの技術を利用してダイズ種子に含まれる主要なタンパク質である7Sおよび11Sグロブリンのノックダウンを試みた。作製した形質転換ダイズの完熟種子においてタンパク質の分析を行ったところ,対象個体と比べ形質転換ダイズ種子では7Sおよび11Sグロブリンタンパク質の蓄積が大きく低下していることが明らかになった。
    日本学術振興会, 挑戦的研究(萌芽), 北海道大学, 19K22298
  • 収量に関与する果皮の裂開機構の生理的解析
    科学研究費助成事業
    2017年04月01日 - 2020年03月31日
    藤野 介延; 森下 敏和; 山田 哲也; 津釜 大侑
    脱皮が容易なダッタンソバ品種をライスタイプといい、単一の遺伝子によって決定されるが、この遺伝子は不明だった。非ライスタイプでは表皮下の細胞の並層分裂が生じ、これらの細胞層が後に木化し、果皮の機械的強度が増加するが、ライスタイプではこの表皮下の細胞の並層分裂が生じないことが判明した。RNAシーケンスでは、ダッタンソバ(FtAG)のAGAMOUSオルソログのmRNAの一部がライスタイプに存在しないことが判明した。後代の連鎖解析により、FtAGが並層分裂を起こす細胞の分化を促進し、果皮の強度が増加する表現型を決定する遺伝子の候補であることが示唆された。
    日本学術振興会, 基盤研究(B), 北海道大学, 17H03754
  • 全身獲得抵抗性の新しい概念の証明とそれを利用した抵抗性育種戦略の例証
    科学研究費助成事業
    2016年04月01日 - 2020年03月31日
    中原 健二; 山田 哲也
    ウイルスのRNAサイレンシング抑制タンパク質と相互作用を介したウイルス防御機構は全身獲得抵抗性に関わる。本研究でこのウイルス防御機構に、6つのカルモジュリン様タンパク質(CML)およびそれらに結合する内生因子が関わることが分かった。これらのCMLと結合内生因子の機能解析の結果から考えられる全身獲得抵抗性の分子機構モデルを構築した。本研究の知見を利用したゲノム編集によりトマトにウイルス抵抗性を付与することが出来た。
    日本学術振興会, 基盤研究(B), 北海道大学, 16H04879
  • ダイズのクロロフィル蓄積変異体における分子遺伝学的および生化学的な特徴付け
    科学研究費助成事業 基盤研究(C)
    2016年04月 - 2019年03月
    山田 哲也; 徳光 雄介
    ダイズの種皮のみにクロロフィルを蓄積するstay green形質をもたらす因子Gsc1の責任遺伝子の単離を試みた。種皮緑品種と種皮無色品種の間において,特定の遺伝子に1塩基置換の存在を明らかにした。この遺伝子を過剰発現する形質転換体では,種皮におけるクロロフィルの分解が著しく抑制されることが分かった。また,種皮緑および種皮無色であるダイズ遺伝資源においてこの遺伝子の変異を調べたところ,種皮緑の系統は全て機能型の遺伝子を持つことを明らかにした。さらに,ほぼ全ての野生ダイズにおいても機能型の遺伝子を持つことを明らかにした。これらのことから,種皮緑は野生ダイズ由来の形質であることが明らかになった。
    日本学術振興会, 基盤研究(C), 北海道大学, 16K07550
  • ダイズの放射性セシウム吸収に関する基礎的研究
    科学研究費補助金(基盤研究(C))
    2014年 - 2016年
    二瓶 直登
    文部科学省, 競争的資金
  • ダイズ遺伝資源に認められる耐塩性遺伝子の単離とその機能解析に関する研究
    科学研究費補助金(基盤研究(C))
    2014年 - 2016年
    許 東河
    文部科学省, 競争的資金
  • ダイズの開花・伸育性に関与する遺伝子の発現ネットワークと環境応答の解明
    科学研究費助成事業
    2011年04月01日 - 2014年03月31日
    阿部 純; 山田 哲也
    ダイズは幅広い緯度の下で栽培される適応性の高い作物である。この広域適応性を支えるのが開花様式の遺伝的多様性である。本研究課題では、ダイズの開花を決定する感光性に関わる遺伝子の多様性とそれらの発現ネットワークを研究した。高緯度地域におけるダイズ栽培を可能にする感光性の消失機構には、光受容体フィトクロームAの欠損と開花誘導に関わる転写因子E1の欠損に加えて、それらとは異なる複数の新規遺伝子の関与が示された。光中断実験から、一日の特定時間帯の光シグナルをフィトクロームAが感受してE1の発現を誘導し、下流で働くフロリゲン遺伝子の発現を抑制することによって、開花を抑制することが明らかとなった。
    日本学術振興会, 基盤研究(B), 北海道大学, 23380001
  • 人工マイクロRNAを介したダイズの高度な遺伝子制御系の開発とその利用
    科学研究費補助金(基盤研究(C))
    2011年 - 2011年
    山田 哲也
    ダイズの遺伝子を効率的に抑制するためダイズに内在するマイクロRNA(miRNA)を利用して人工miRNA(amiRNA)の遺伝子制御系を確立した。最初に,ダイズの貯蔵タンパク質遺伝子を標的にamiRNAを発現するダイズ形質転換体を作出した。これらの形質転換体では,標的遺伝子の発現が強く抑制され,貯蔵タンパク質の蓄積も減少していた。次に,ダイズ種子の機能性成分の一つであるDDMPサポニンの配糖化酵素遺伝子の機能解析を行った。その結果,対象とした遺伝子が目的とする機能を持つことが検証できた。これら一連の研究を通して,本遺伝子制御系がダイズ遺伝子の機能解析に利用できることを実証した。
    文部科学省, 基盤研究(C), 北海道大学, 研究代表者, 競争的資金, 23580002
  • 国内品種カリユタカを用いた簡便かつ迅速なダイズ形質転換系の確立とその利用
    科学研究費補助金(基盤研究(C))
    2008年 - 2010年
    山田 哲也; 喜多村 啓介
    高等植物における遺伝子組換え技術は遺伝子の機能を調べるためや新しく品種を育成するために利用される。大豆の遺伝子組換え体は,複雑な工程を経て作出されている。本研究では,大豆の国内品種「カリユタカ」が他の品種に比べ簡単に組織培養できることを利用して,簡便かつ迅速な大豆の遺伝子組換え方法を確立した。なお,本方法は従来の方法と比べ,4倍程度の効率で遺伝子組換え体を作出することができた。
    文部科学省, 基盤研究(C), 北海道大学, 研究代表者, 競争的資金, 20580003
  • アルファトコフェロール、ルテイン等を集積した高機能ダイズの開発
    科学研究費補助金(基盤研究(B))
    2007年 - 2009年
    喜多村 啓介; 阿部 純; 山田 哲也
    ダイズはビタミンE活性が高いα-トコフェロール(以下、α-Toc)、眼の主要な疾病である加齢性網膜黄斑変性症等にかかる危険性を低減するルテインの含有量が低い。ダイズの変異品種(「Keszthelyi A.S」、以下「KAS」)に見出した高α-Toc形質を完全に識別できるDNAマーカーを開発した。また野生ダイズであるツルマメ数系統に高ルテイン形質を認め、本形質が子葉に由来すること、および選抜マーカーの開発が可能であることを示した。実際に、高α-Tocの「KAS」と高ルテインツルマメ系統の交配後代に、両成分が高い系統が出現することを示した。また、高リノレン酸形質の選抜マーカーの開発が可能であることを示した。
    文部科学省, 基盤研究(B), 北海道大学, 連携研究者, 競争的資金, 19380001
  • ダイズの高α-トコフェロール化遺伝子の同定と作用機序の解明
    科学研究費補助金(萌芽研究)
    2005年 - 2006年
    喜多村 啓介; 山田 哲也; 石本 政男
    高α-トコフェロール(Toc)品種「Keszthelyi A.S.」と普通品種「いちひめ」の交配後代の分離集団を用いた解析の結果、Sat_243とSat_167(連鎖群K)の遺伝子型とα-Toc含有率との問に密接な関係を認めた。また、α-Toc含有率とγ-Toc含有率の間に高い負の相関を認め,高α-Toc形質にはγ-Tocをα-Tocに変換するγ-Tocopherol methyltransferase(γ-TMT)が関与することが示唆された。次に,トコフェロール生合成関連酵素、Homogentisate phytyltransferase(HPT),2-Methyl-6-phytyl-1,4-benzoquinol methyltransferase(MPBQMT),Tocopherol cyclase(TC),及びγ-TMTの4種の酵素遺伝子について,ダイズTACライブラリーからPCRにより上記4酵素遺伝子を含むと推定されるクローンを単離した。さらに、上記の中でも特に高α-Toc化に強く影響を及ぼすと考えられるγ-TMTについて解析を進め,cDNAを用いた3'-RACEの結果から、γ-TMT遺伝子には少なくとも3コピー(γ-TMT1,γ-TMT2,γ-TMT3)が存在することを明らかにした。また、これらの3つの遺伝子の発現解析を行うためにリアルタイムRT-PCRを試みた。...
    文部科学省, 萌芽研究, 北海道大学, 連携研究者, 競争的資金, 17658001