Kagoshima University · Division of Agricultural Sciences, School of Agriculture, Fisheries and Veterinary Medicine · 准教授

Research keywordsrice stress tolerance・salinity tolerance・iron toxicity・halopriming・cutting sapling nutrition・waterlogging soil chemistry

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• Effect of Different Fertilizer Doses Applied in Different Seasons of Cutting Sapling Production on Nutrient Accumulation and Outplanting Performance of Cryptomeria japonica D. Don Cutting Saplings2026
• Rice interspecific hybrid NERICA4 shows extremely high tolerance to excess iron and salinity in the rhizosphere2025
• Libron J.A.M.A., Putri H.H., Bore E.K., Chepkoech R., Akagi I., Odama E., Goto K., Tamaru S., Yabuta S., Sakagami J.I. . Halopriming in the submergence-tolerant rice variety improved the resil2024 · 記述言語： 英語 掲載種別： 研究論文（学術雑誌） 出版者・発行元： Plant Physiology and Biochemistry The role of halopriming in alleviating the detrimental effects of salinity and combined salinity-submergence was evaluated using two rice genotypes, “IR06F148” (anaerobic germination + submergence tolerant [Sub1]) and “Salt-star” (salt tolerant) with contrasting levels of tolerance. Nonprimed seeds and those primed with 1% calcium chloride (CaCl2) were germinated, and the seedlings were exposed to salinity (50 or 100 mM sodium chloride [NaCl]) and submergence (nonsaline or saline water). Salinity substantially inhibited plant height, shoot/root dry mass, and leaf area. Priming improved the resilience to 50 mM NaCl by increasing the chlorophyll content and lowering hydrogen peroxide (H2O2) production; and to 100 mM NaCl by increasing the total soluble sugars. However, apparent differences in the responses of primed “Salt-star”, such as an increase in the Na+, K+, and Ca2+ levels, indicated that halopriming differentially affected the response to salt based on the salinity tolerance of the variety. Submergence reduced the shoot biomass, chlorophyll, and photosynthetic efficiency to a greater extent in “Salt-star” than in “IR06F148”. Priming, especially in “Salt-star”, caused a lesser reduction in the chlorophyll (Chl) and maximum quantum yield of photosystem II (Fv/Fm) but increased the total soluble sugars post-submergence, indicating a boost in the photosynthetic efficiency. The responses of the two varieties to submergence depended on their tolerance, and halopriming affected each variety differently. The metabolic and molecular changes induced by halopriming in submergence-tolerant rice may be explored further to understand the underlying mechanisms of improved resilience. DOI： 10.1016/j.plaphy.2024.108494 Scopus PubMed
• 赤木 功・樗木直也・山本雅史・香西直子 . 鹿児島県内の生産者圃場で観察されたアボカドの葉の生理障害：塩素過剰による栄養障害の可能性 . 鹿児島大学農学部農場研究報告45 15 - 19 2024年3月 詳細を見る 担当区分： 筆頭著2024 · 担当区分： 筆頭著者 記述言語： 日本語 掲載種別： 研究論文（大学，研究機関等紀要） 機関リポジトリURL

• 作物生産および農地環境への安全性を考慮した再生石膏の肥料利用マニュアルの提案2026
• 温帯・亜熱帯のフィールド試験に基づく紫カンショ収量および品質の環境応答機構の解明2022
• 土壌の還元化による有機態臭素の可溶化効果および水稲栽培下における臭素収支の解明2018 · 2018年4月 - 2020年3月
• 我が国の農耕地土壌におけるフッ素蓄積の実態2013 · 2013年4月 - 2016年3月

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