SEARCH

Search Details

Isoda Reika

Research Faculty of Agriculture Fundamental AgriScience Research Bioscience and ChemistrySpecially Appointed Associate Professor

Researcher basic information

■ Degree
  • Doctor of agriculture, Hokkaido University, Dec. 2017
■ URL
researchmap URLホームページURL■ Various IDs
ORCID IDJ-Global ID

Career

■ Career
Career
  • May 2025 - Present
    Hokkaido University, Graduate School of Agriculture Research Faculty of Agriculture, Specially Appointed Associate Professor
  • Apr. 2025 - Present
    National Institute of Advanced Industrial Science and Technology, Biomanufacturing Process Research Center, 研究員
  • Apr. 2024 - Apr. 2025
    National Institute of Advanced Industrial Science and Technology, 生物プロセス研究部門, 研究員
  • Aug. 2019 - Mar. 2024
    Nagoya University, Institute of Transformative Bio-Molecules, 博士研究員
  • Apr. 2018 - Jul. 2019
    Hokkaido University, 博士研究員
  • Apr. 2017 - Mar. 2018
    Hokkaido University, 学術研究員
  • Apr. 2015 - Mar. 2017
    Japan Society for the Promotion of Science, 特別研究員DC2
Educational Background
  • Apr. 2014 - Mar. 2017, Hokkaido University, Graduate School of Agriculture, 応用生物科学専攻, 博士課程
  • Feb. 2012 - Mar. 2014, Hokkaido University, Graduate School of Agriculture, 応用生物科学専攻, 修士課程
  • Apr. 2008 - Mar. 2012, Hokkaido University, Faculty of Agriculture, Department of Applied Bioscience

Research activity information

■ Papers
  • Complete genome sequences of two Mesoterricola strains belonging to the phylum Acidobacteriota , isolated from sediment and paddy soil
    Reika Isoda; Miyu Kuniyasu; Hideomi Itoh
    Microbiology Resource Announcements, 09 Apr. 2026
    Scientific journal
  • Water-Soluble Aromatic Nanobelt with Unique Cellular Internalization.
    Konstantin Günther; Hideya Kono; Hiroki Shudo; Daisuke Shimizu; Reika Isoda; Masayoshi Nakamura; Akiko Yagi; Kazuma Amaike; Kenichiro Itami
    Angewandte Chemie (International ed. in English), e202414645, 30 Sep. 2024, [International Magazine]
    English, Scientific journal, A water-soluble aromatic nanobelt was synthesized, and its cellular uptake behavior in HeLa cells was investigated. The late-stage functionalization of the parent methylene-bridged [6]cycloparaphenylene ([6]MCPP) provided an easily accessible alkyne-functionalized nanobelt in a single reaction step. The alkyne-substituted [6]MCPP was subjected to Cu-catalyzed azide-alkyne cycloaddition by using a dye-attached azide to obtain a water-soluble aromatic nanobelt. Cell-imaging experiments on the synthesized nanobelt in HeLa cells revealed stop-and-go cellular uptake dynamics. Similar experiments with control molecules and theoretical studies indicated that the unique dynamics of the nanobelt was derived from the belt-shaped structure.
  • Near‐infrared imaging of phytochrome‐derived autofluorescence in plant nuclei
    Akira Yoshinari; Reika Isoda; Noriyoshi Yagi; Yoshikatsu Sato; Jelmer J. Lindeboom; David W. Ehrhardt; Wolf B. Frommer; Masayoshi Nakamura
    The Plant Journal, Jun. 2024
    Scientific journal
  • SWEET13 transport of sucrose, but not gibberellin, restores male fertility in Arabidopsis sweet13;14.
    Reika Isoda; Zoltan Palmai; Akira Yoshinari; Li-Qing Chen; Florence Tama; Wolf B Frommer; Masayoshi Nakamura
    Proceedings of the National Academy of Sciences of the United States of America, 119, 42, e2207558119, 18 Oct. 2022, [International Magazine]
    English, Scientific journal, SWEET sucrose transporters play important roles in the allocation of sucrose in plants. Some SWEETs were shown to also mediate transport of the plant growth regulator gibberellin (GA). The close physiological relationship between sucrose and GA raised the questions of whether there is a functional connection and whether one or both of the substrates are physiologically relevant. To dissect these two activities, molecular dynamics were used to map the binding sites of sucrose and GA in the pore of SWEET13 and predicted binding interactions that might be selective for sucrose or GA. Transport assays confirmed these predictions. In transport assays, the N76Q mutant had 7x higher relative GA3 activity, and the S142N mutant only transported sucrose. The impaired pollen viability and germination in sweet13;14 double mutants were complemented by the sucrose-selective SWEET13S142N, but not by the SWEET13N76Q mutant, indicating that sucrose is the physiologically relevant substrate and that GA transport capacity is dispensable in the context of male fertility. Therefore, GA supplementation to counter male sterility may act indirectly via stimulating sucrose supply in male sterile mutants. These findings are also relevant in the context of the role of SWEETs in pathogen susceptibility.
  • OsSWEET11b, a potential sixth leaf blight susceptibility gene involved in sugar transport‐dependent male fertility
    Lin‐Bo Wu; Joon‐Seob Eom; Reika Isoda; Chenhao Li; Si Nian Char; Dangping Luo; Van Schepler‐Luu; Masayoshi Nakamura; Bing Yang; Wolf B. Frommer
    New Phytologist, 234, 3, 975, 989, Wiley, May 2022
    Scientific journal
  • Advances in Synthetic Fluorescent Probe Labeling for Live Cell Imaging in Plants.
    Noriyoshi Yagi; Akira Yoshinari; Ryu J Iwatate; Reika Isoda; Wolf B Frommer; Masayoshi Nakamura
    Plant & cell physiology, 08 Jul. 2021, [Domestic magazines]
    English, Scientific journal, Fluorescent probes are a powerful tool for visualizing cellular and subcellular structures, their dynamics, and cellular molecules in living cells, and enables us to monitor cellular processes in a spatio-temporal manner within complex and crowded systems. In addition to popular fluorescent proteins, a wide variety of small-molecule dyes have been synthesized through close association with the interdisciplinary field of chemistry and biology, ranging from those suitable for labeling cellular compartments such as organelles to those for labeling intracellular biochemical and biophysical processes and signaling. In recent years, self-labeling technologies including the SNAP-tag system have allowed us to attach these dyes to cellular domains or specific proteins, and are beginning to be employed in plant studies. In this mini review, we will discuss the current range of synthetic fluorescent probes that have been exploited for live cell imaging and the recent advances in the application that enable genetical tagging of synthetic probes in plant research.
  • Sensors for the quantification, localization and analysis of the dynamics of plant hormones.
    Reika Isoda; Akira Yoshinari; Yuuma Ishikawa; Mayuri Sadoine; Rüdiger Simon; Wolf B Frommer; Masayoshi Nakamura
    The Plant journal : for cell and molecular biology, 105, 2, 542, 557, Jan. 2021, [International Magazine]
    English, Scientific journal, Plant hormones play important roles in plant growth and development and physiology, and in acclimation to environmental changes. The hormone signaling networks are highly complex and interconnected. It is thus important to not only know where the hormones are produced, how they are transported and how and where they are perceived, but also to monitor their distribution quantitatively, ideally in a non-invasive manner. Here we summarize the diverse set of tools available for quantifying and visualizing hormone distribution and dynamics. We provide an overview over the tools that are currently available, including transcriptional reporters, degradation sensors, and luciferase and fluorescent sensors, and compare the tools and their suitability for different purposes.
  • Transcriptional silencing of 35S driven-transgene is differentially determined depending on promoter methylation heterogeneity at specific cytosines in both plus- and minus-sense strands
    Wataru Matsunaga; Hanako Shimura; Senri Shirakawa; Reika Isoda; Tsuyoshi Inukai; Takeshi Matsumura; Chikara Masuta
    BMC PLANT BIOLOGY, 19, Jan. 2019
    English, Scientific journal
  • Comparison of Archaeal Communities in Mineral Soils at a Boreal Forest in Finland and a Cold-Temperate Forest in Japan
    Reika Isoda; Shintaro Hara; Teemu Tahvanainen; Yasuyuki Hashidoko
    MICROBES AND ENVIRONMENTS, 32, 4, 390, 393, Dec. 2017
    English, Scientific journal
  • Physiological and Genotypic Characteristics of Nitrous Oxide (N2O)-Emitting Pseudomonas Species Isolated from Dent Corn Andisol Farmland in Hokkaido, Japan
    Yanxia Nie; Li Li; Reika Isoda; Mengcen Wang; Ryusuke Hatano; Yasuyuki Hashidoko
    MICROBES AND ENVIRONMENTS, 31, 2, 93, 103, Jun. 2016
    English, Scientific journal
  • Distinct Metabolites for Photoreactive L-Phenylalanine Derivatives in Klebsiella sp CK6 Isolated from Rhizosphere of a Wild Dipterocarp Sapling
    Lei Wang; Wataru Hisano; Yuta Murai; Munenori Sakurai; Yasuyuki Muto; Haruka Ikemoto; Masashi Okamoto; Takashi Murotani; Reika Isoda; Dongyeop Kim; Yasuko Sakihama; Irnayuli R. Sitepu; Yasuyuki Hashidoko; Yasumaru Hatanaka; Makoto Hashimoto
    MOLECULES, 18, 7, 8393, 8401, Jul. 2013
    English, Scientific journal
  • Trace Amounts of Furan-2-Carboxylic Acids Determine the Quality of Solid Agar Plates for Bacterial Culture
    Shintaro Hara; Reika Isoda; Teemu Tahvanainen; Yasuyuki Hashidoko
    PLOS ONE, 7, 7, Jul. 2012
    English, Scientific journal
■ Other Activities and Achievements
■ Affiliated academic society
  • 微生物生態学会
  • 日本植物生理学会
  • 日本土壌肥料学会
■ Research Themes
  • 根圏と腸内のアナロジーから探る:共生適応機構の解明
    科学研究費助成事業
    01 Apr. 2026 - 31 Mar. 2029
    礒田 玲華
    日本学術振興会, 基盤研究(C), 国立研究開発法人産業技術総合研究所, 26K09481
  • イボタケ類菌糸マットを構成し土壌酸性化作用を担う微生物群の解明とその活性評価
    科学研究費助成事業 国際共同研究加速基金(国際共同研究強化(B))
    07 Oct. 2022 - 31 Mar. 2027
    宮本 敏澄; 原口 昭; 礒田 玲華
    イボタケ類の菌糸マットの移動方向に沿った、土壌酸性化に関わる遺伝子群mRNAの土壌中での発現量、菌糸マット内の微生物群集変化の調査を行うために、昨年度に土壌から抽出したDNAのPCR作業を進めた。また、mRNAの土壌中での発現量調査については、すでに設定された固定調査地で行うが、予備実験を行った上で最適なサンプリング計画を立てる予定でいる。しかし、土壌資料のサンプリングに伴う調査地の土壌撹乱は避けられず、固定調査地で確認されたイボタケ類の菌糸マットの数やサイズは予備調査による繰り返しのサンプリングのためには不十分であった。さらに、環境条件が異なった場合でも結果が同様となるのかを確かめるために、新たなサイトについても引き続きイボタケ類の菌糸マットを探索し調査サイトの設定を行う必要があった。そこで、フィンランド東部でヨーロッパアカマツとヨーロッパトウヒを主体とする天然林で、新たな調査地を探索した。その結果今年度は、比較的高密度にイボタケ類の菌糸マットが分布している調査地を設置することができた。イボタケ類の菌糸マットの発達-消失過程は子実体の発生と地下の菌糸マットの存在と形状、その直下の土壌漂白層の発達度、および植生の変化パタンから推定した。表層の土壌有機物層を一部剥がすことで菌糸マットの存在を確認し、菌糸マットが未発達(未到達)の林床-発達した菌糸マット-消失過程にある菌糸マットに沿った3地点からDNAおよびmRNA抽出用に層位別の土壌サンプルを採集した。土壌サンプルは東フィンランド大学の実験室に持ち帰り、mRNAを固定する処理を行った上で北海道大学へ輸送した。
    日本学術振興会, 国際共同研究加速基金(国際共同研究強化(B)), 北海道大学, 22KK0086
  • 無機窒素動態に連動する土壌微生物群集解析による北方林窒素ミッシングリンク解明
    科学研究費助成事業 特別研究員奨励費
    24 Apr. 2015 - 31 Mar. 2017
    礒田 玲華
    本研究は北方圏生態系における土壌微生物群集の構造とそれらの窒素循環への寄与を評価することを目的して,フィールド調査と実験室内試験を行ってきた。これまでに,森林限界からツンドラ域における植生,土壌理化学性,土壌微生物群集構造とそれらの窒素固定ポテンシャルを各因子と無機窒素代謝との関連を調査してきている。
    フィンランド北部森林限界線トウヒ疎林と北海道苫小牧カラマツ人工林の土壌微生物群集解析により中温性古細菌群が多数検出されたため,古細菌群集についてより詳細な系統樹解析を行った。両サイトの古細菌群集は大きく2つの門で構成されていた。うち一つが中温性古細菌群であり,これらは4クレードにわかれた。これら中温性古細菌はアンモニア酸化を担っている可能性が考えられる。また,真性細菌群集について窒素固定を担っている可能性のある群集を解析したところ,フィンランドトウヒ疎林の土壌微生物群集から,より多くの窒素固定関連最近群集を見出した。
    スウェーデン北部のU字谷Karkevaggeではツンドラを代表する5タイプの植生がU字谷内に確認できる。5タイプの植生下の有機物土壌に対し,土壌化学特性や窒素固定ポテンシャル評価,次世代シークエンシングによる群集解析を行った。その結果,pHが高い3タイプでは比較的高い窒素固定ポテンシャルを示した一方でpHが低い2タイプでは窒素固定をほとんど示さなかった。真正細菌群集の構成要因は5タイプの植生間でほぼ同じだったのに対し,それらの構成比は植生に依存することがわかった。また,窒素固定ポテンシャルは植生と土壌中のアンモニア態窒素濃度と関連があることが明らかとなった。
    日本学術振興会, 特別研究員奨励費, 北海道大学, 15J06157