| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2023-10-20 |
| タイトル |
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タイトル |
Rice immediately adapts the dynamics of photosynthates translocation to roots in response to changes in soil water environment |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Miyoshi Yuta
Fumiyuki Soma (NARO)
Yonggen Yin
Suzui Nobuo
Noda Yusaku
Enomoto Kazuyuki
Nagao Yuuto
Yamaguchi Mitsutaka
Kawachi Naoki
Yoshida Eiji
Tashima Hideaki
Yamaya Taiga
Noriyuki Kuya (NARO)
Shota Teramoto (NARO)
Yusaku Uga (NARO)
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Rice is susceptible to abiotic stresses such as drought stress. To enhance drought resistance, elucidating the mechanisms by which rice plants adapt to intermittent drought stress that may occur in the field is an important requirement. Roots are directly exposed to changes in the soil water condition, and their responses to these environmental changes are driven by photosynthates. To visualize the distribution of photosynthates in the root system of rice plants under drought stress and recovery from drought stress, we combined X-ray computed tomography (CT) with open type positron emission tomography (OpenPET) and positron-emitting tracer imaging system (PETIS) with 11C tracer. The short half-life of 11C (20.39 min) allowed us to perform multiple experiments using the same plant, and thus photosynthate translocation was visualized as the same plant was subjected to drought stress and then re-irrigation for recovery. The results revealed that when soil is drier, 11C-photosynthates mainly translocated to the seminal roots, likely to promote elongation of the root with the aim of accessing water stored in the lower soil layers. The photosynthates translocation to seminal roots immediately stopped agter rewatering then increased significantly in crown roots. We suggest that when rice plant experiencing drought is re-irrigated from the bottom of pot, the destination of 11C-photosynthates translocation immediately switches from seminal root to crown roots. We reveal that rice roots are responsive to changes in soil water conditions and that rice plants differentially adapts the dynamics of photosynthates translocation to crown roots and seminal roots depending on soil conditions. |
| 書誌情報 |
Frontiers in Plant Science
巻 13,
p. 1024144,
発行日 2022-12
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| 出版者 |
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出版者 |
Frontiers Media S.A. |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
1664-462X |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.3389/fpls.2022.1024144 |
