Knowledge Management System of Kunming Institute of Botany,CAS
| Photosynthetic regulation under fluctuating light at chilling temperature in evergreen and deciduous tree species | |
Huang,Wei ; Hu,Hong; Zhang,Shi-Bao
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| 2021 | |
| Source Publication | JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY
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| ISSN | 1011-1344 |
| Volume | 219Pages:112203 |
| Abstract | Plants usually experience fluctuating light conditions at chilling temperatures during the autumn season. We hypothesized that photosystem I (PSI) and PSII are more susceptible to photoinhibition under fluctuating light at chilling temperatures in deciduous species relative to evergreen species. We measured the photosynthetic performances under fluctuating light at 6 degrees C in two evergreen and two deciduous broadleaf tree species. Within the first 10 s after light increased at 6 degrees C, none of these species could generate an enough trans-thylakoid proton gradient. Meanwhile, PSI was highly oxidised in evergreen species but was highly reduced in deciduous species. This transient over-reduction of PSI in deciduous species was mainly caused by the higher electron flow from PSII. Furthermore, the deciduous species showed a significantly smaller violaxanthin pool and lower nonphotochemical quenching under high light conditions at 6 degrees C, leading to more excess light energy could not be dissipated in PSII. Hence, we propose that fluctuating light combined with chilling temperature cause the over-reduction of photosynthetic electron chain in deciduous species. |
| Keyword | Photosynthesis Photosystem I Photosystem II Photoinhibition Electron transport CYCLIC ELECTRON FLOW WATER-WATER CYCLE PHOTOSYSTEM-I FLAVODIIRON PROTEINS CO2 ASSIMILATION EXCITATION-ENERGY HIGHER-PLANTS REPAIR CYCLE DE-NOVO PHOTOINHIBITION |
| DOI | 10.1016/j.jphotobiol.2021.112203 |
| WOS ID | WOS:000657689600001 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.kib.ac.cn/handle/151853/73623 |
| Collection | 中国科学院昆明植物研究所 |
| Affiliation | 1.[Huang, Wei 2.Hu, Hong 3.Chinese Acad Sci, Kunming Inst Bot, Kunming 650201, Yunnan, Peoples R China |
| Recommended Citation GB/T 7714 | Huang,Wei,Hu,Hong,Zhang,Shi-Bao. Photosynthetic regulation under fluctuating light at chilling temperature in evergreen and deciduous tree species[J]. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY,2021,219:112203. |
| APA | Huang,Wei,Hu,Hong,&Zhang,Shi-Bao.(2021).Photosynthetic regulation under fluctuating light at chilling temperature in evergreen and deciduous tree species.JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY,219,112203. |
| MLA | Huang,Wei,et al."Photosynthetic regulation under fluctuating light at chilling temperature in evergreen and deciduous tree species".JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 219(2021):112203. |
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