2013 Fiscal Year Final Research Report
Evolutional strategy for the establishment of angiosperm-type chloroplast NDH
| Project/Area Number |
22247005
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Plant molecular biology/Plant physiology
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
TSUGEKI Ryuuji 京都大学, 大学院理学研究科, 助教 (50303805)
NISHIMURA Yoshiki 京都大学, 大学院理学研究科, 助教 (70444099)
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| Project Period (FY) |
2010-04-01 – 2013-03-31
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| Keywords | 葉緑体 / NDH / サイクリック電子伝達 / 光合成 / アセンブリ / 進化 / シロイヌナズナ / ゼニゴケ |
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| Research Abstract |
We discovered that a novel protein, NdhS is necessary for the high-affinity binding of chloroplast NDH with ferredoxin. Chloroplast NDH is not NAD(P)H dehydrogenase but antimycin A-resistant ferredoxin-dependent plastoquinone reductase (FQR). We also clarified the assembly process of subcomplex A of chloroplast NDH in Arabidopsis with the discovery of several assembly factors specifically required for this process. We further discovered that in Marchantia chloroplast NDH does not form the supercomplex with photosystem I and is involved in the redox homeostasis in chloroplasts at low light intensity.
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