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  1. 国際農研研究成果
  2. 学術雑誌論文

Physiological insensitivity to an increase in leaf Fe constitutes a tissue‑tolerance mechanism against Fe toxicity in rice

https://jircas.repo.nii.ac.jp/records/2000886
https://jircas.repo.nii.ac.jp/records/2000886
432c4a2b-16bb-4a5f-a1df-7fb6216ea3ad
名前 / ファイル ライセンス アクション
2000886.pdf 2000886 (2.7 MB)
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Item type 国際農研デフォルトアイテムタイプ(フル)(1)
公開日 2025-06-16
タイトル
タイトル Physiological insensitivity to an increase in leaf Fe constitutes a tissue‑tolerance mechanism against Fe toxicity in rice
言語 en
作成者 Rosdianti, Ida

× Rosdianti, Ida

ORCID 0000-0001-5397-9310

en Rosdianti, Ida
ISNI The University of Tokyo 0000000121691048
ISNI Indonesian Center for Agricultural Biotechnology and Genetic Resources Research and Development (ICABIOGRAD) 0000000403913075
ISNI Japan International Research Center for Agricultural Sciences (JIRCAS) 0000000121078171

Search repository
Ueda, Yoshiaki

× Ueda, Yoshiaki

ORCID 0000-0002-4304-368X

en Ueda, Yoshiaki
ISNI Japan International Research Center for Agricultural Sciences (JIRCAS) 0000000121078171

Search repository
Nakanishi, Hiromi

× Nakanishi, Hiromi

ORCID 0000-0001-5556-5058

en Nakanishi, Hiromi
ISNI The University of Tokyo 0000000121691048

Search repository
Utami, Dwinita Wikan

× Utami, Dwinita Wikan

ORCID 0000-0002-5873-0570

en Utami, Dwinita Wikan
ISNI Indonesian Center for Agricultural Biotechnology and Genetic Resources Research and Development (ICABIOGRAD) 0000000403913075
ISNI National Research and Innovation Agency [Indonesia] 0000000510897007

Search repository
Yuriyah, Siti

× Yuriyah, Siti

ORCID 0009-0003-3733-8443

en Yuriyah, Siti
ISNI Indonesian Center for Agricultural Biotechnology and Genetic Resources Research and Development (ICABIOGRAD) 0000000403913075
ISNI National Research and Innovation Agency [Indonesia] 0000000510897007

Search repository
Takanashi, Hideki

× Takanashi, Hideki

ORCID 0000-0003-2251-8508

en Takanashi, Hideki
ISNI The University of Tokyo 0000000121691048

Search repository
Wissuwa, Matthias

× Wissuwa, Matthias

ORCID 0000-0003-3505-9398

en Wissuwa, Matthias
ISNI Japan International Research Center for Agricultural Sciences (JIRCAS) 0000000121078171
ISNI University of Bonn 0000000122403300

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アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利情報
権利情報 © The Author(s) 2025
権利情報
権利情報 The version of record of this article, first published in Plant and Soil is available online at Publisher’s website: https://doi.org/10.1007/s11104-025-07587-0
権利情報
権利情報Resource http://creativecommons.org/licenses/by/4.0/
権利情報 This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/
主題
主題 Rice, Iron toxicity, Photosynthesis, Genotypic difference, Indonesia
内容記述
内容記述タイプ Abstract
内容記述 Aims
Iron (Fe) toxicity is a major nutrient stress that severely limits lowland rice yield worldwide. While tolerant rice varieties have been identified, their specific physiological factors underlying the tolerance remain unclear. This study aims to clarify the physiological mechanisms that contribute to field-based Fe stress tolerance.

Methods
Field trials were conducted at Fe-stressed alongside control sites in Indonesia. Three contrasting lowland Indica rice genotypes were used: Ciherang (sensitive), IR42 (tolerant), and a breeding line KA-28 (tolerant) derived from a cross between Ciherang and IR42. A hydroponic study was conducted to investigate responses of photosynthesis and gene expression.

Results
In the field experiment, Ciherang exhibited the most severe leaf bronzing, biomass reduction, and > 50% yield loss, whereas IR42 and KA-28 maintained > 60% of control yield with milder symptoms. Sensitive Ciherang and tolerant KA-28 had similar shoot Fe concentrations (> 700 ppm), indicating that tolerance was due to a tissue-based mechanism rather than the exclusion of excess Fe at the root. The hydroponic study confirmed the “tissue-based” tolerance mechanism of KA-28 under Fe toxicity, with less impact of unit Fe on leaf symptoms compared to Ciherang. Reductions in photosynthetic rates and changes in a Fe-responsive vacuolar Fe transporter gene, OsVIT2, per unit increase in Fe concentrations were more pronounced in Ciherang than in KA-28.

Conclusions
These findings collectively suggest that the physiological insensitivity to increased Fe levels is the basis for the tissue-tolerance mechanism observed in KA-28 in the field. This study provides valuable insights for breeding Fe-tolerant rice varieties.
言語 en
出版者
出版者 Springer
日付
日付 2025-05-20
日付タイプ Accepted
言語
言語 eng
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
資源タイプ journal article
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
関連情報
関連タイプ isIdenticalTo
識別子タイプ DOI
関連識別子 https://doi.org/10.1007/s11104-025-07587-0
収録物識別子
収録物識別子タイプ EISSN
収録物識別子 1573-5036
収録物識別子
収録物識別子タイプ PISSN
収録物識別子 0032-079X
収録物識別子
収録物識別子タイプ NCID
収録物識別子 AA00775448
書誌情報 en : Plant and Soil

巻 2025, p. none, 発行日 2025-06-11
助成情報
識別子タイプ ISNI
助成機関識別子 https://isni.org/isni/0000000106757176
助成機関名 Ministry of Agriculture, Republic of Indonesia(en)
研究課題番号 562/KPTS/KP.320/A/10/2021
助成情報
識別子タイプ Crossref Funder
助成機関識別子 https://doi.org/10.13039/501100009472
助成機関名 Japan International Research Center for Agricultural Sciences (JIRCAS)(en)
研究課題番号URI https://www.jircas.go.jp/en/program/prob/b5
研究課題番号 05a1B5
研究課題名 Africa Rice Farming System(en)
助成情報
識別子タイプ Crossref Funder
助成機関識別子 https://doi.org/10.13039/501100001659
助成機関名 Deutsche Forschungsgemeinschaft (DFG)(de)
German Research Foundation(en)
研究課題番号 EXC2070-390732324
研究課題名 Germany’s Excellence Strategy(en)
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