Photosynthetic regulation under fluctuating light at chilling temperature in evergreen and deciduous tree species

doi:10.1016/j.jphotobiol.2021.112203

KIB OpenIR

	Photosynthetic regulation under fluctuating light at chilling temperature in evergreen and deciduous tree species
	Huang,Wei; Hu,Hong; Zhang,Shi-Bao
	2021
发表期刊	JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY
ISSN	1011-1344
卷号	219 页码:112203
摘要	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.
关键词	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记录号	WOS:000657689600001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/73623
专题	中国科学院昆明植物研究所
作者单位	1.[Huang, Wei 2.Hu, Hong 3.Chinese Acad Sci, Kunming Inst Bot, Kunming 650201, Yunnan, Peoples R China
推荐引用方式 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.