Photosystem i cyclic electron flow via chloroplast NADH dehydrogenase-like complex performs a physiological role for photosynthesis at low light
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説明
Cyclic electron transport around photosystem I (PS I) was discovered more than a half-century ago and two pathways have been identified in angiosperms. Although substantial progress has been made in understanding the structure of the chloroplast NADH dehydrogenase-like (NDH) complex, which mediates one route of the cyclic electron transport pathways, its physiological function is not well understood. Most studies focused on the role of the NDH-dependent PS I cyclic electron transport in alleviation of oxidative damage in strong light. In contrast, here it is shown that impairment of NDH-dependent cyclic electron flow in rice specifically causes a reduction in the electron transport rate through PS I (ETR I) at low light intensity with a concomitant reduction in CO[2] assimilation rate, plant biomass and importantly, grain production. There was no effect on PS II function at low or high light intensity. We propose a significant physiological function for the chloroplast NDH at low light intensities commonly experienced during the reproductive and ripening stages of rice cultivation that have adverse effects crop yield.
収録刊行物
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- Scientific Reports
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Scientific Reports 5 13908-, 2015-09-11
Nature Publishing Group
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詳細情報 詳細情報について
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- CRID
- 1050282810812428288
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- NII論文ID
- 120005822772
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- ISSN
- 20452322
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- HANDLE
- 2433/216203
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- PubMed
- 26513004
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- 本文言語コード
- en
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- 資料種別
- journal article
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- データソース種別
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- Crossref
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