Elevated CO2 Concentration Alters Photosynthetic Performances under Fluctuating Light in Arabidopsis thaliana

doi:10.3390/cells10092329

KIB OpenIR

	Elevated CO2 Concentration Alters Photosynthetic Performances under Fluctuating Light in Arabidopsis thaliana
	Tan,Shun-Ling ; Huang,Xing ; Li,Wei-Qi ; Zhang,Shi-Bao ; Huang,Wei
	2021
发表期刊	CELLS
ISSN	2073-4409
卷号	10 期号:9 页码:2329
摘要	In view of the current and expected future rise in atmospheric CO2 concentrations, we examined the effect of elevated CO2 on photoinhibition of photosystem I (PSI) under fluctuating light in Arabidopsis thaliana. At 400 ppm CO2, PSI showed a transient over-reduction within the first 30 s after transition from dark to actinic light. Under the same CO2 conditions, PSI was highly reduced after a transition from low to high light for 20 s. However, such PSI over-reduction greatly decreased when measured in 800 ppm CO2, indicating that elevated atmospheric CO2 facilitates the rapid oxidation of PSI under fluctuating light. Furthermore, after fluctuating light treatment, residual PSI activity was significantly higher in 800 ppm CO2 than in 400 ppm CO2, suggesting that elevated atmospheric CO2 mitigates PSI photoinhibition under fluctuating light. We further demonstrate that elevated CO2 does not affect PSI activity under fluctuating light via changes in non-photochemical quenching or cyclic electron transport, but rather from a rapid electron sink driven by CO2 fixation. Therefore, elevated CO2 mitigates PSI photoinhibition under fluctuating light at the acceptor rather than the donor side. Taken together, these observations indicate that elevated atmospheric CO2 can have large effects on thylakoid reactions under fluctuating light.
关键词	CO2 concentration photosynthesis photosystem I redox state of P700 CYCLIC ELECTRON FLOW PROTON MOTIVE FORCE PHOTOSYSTEM-I FLAVODIIRON PROTEINS TRANSPORT GROWTH PHOTOINHIBITION PHOTOPROTECTION ASSIMILATION PSI
DOI	10.3390/cells10092329
WOS记录号	WOS:000699405300001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/73056
专题	中国科学院昆明植物研究所
作者单位	1.[Tan, Shun-Ling 2.Huang, Xing 3.Li, Wei-Qi 4.Zhang, Shi-Bao 5.Chinese Acad Sci, Kunming Inst Bot, Kunming 650201, Yunnan, Peoples R China 6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Tan,Shun-Ling,Huang,Xing,Li,Wei-Qi,et al. Elevated CO2 Concentration Alters Photosynthetic Performances under Fluctuating Light in Arabidopsis thaliana[J]. CELLS,2021,10(9):2329.
APA	Tan,Shun-Ling,Huang,Xing,Li,Wei-Qi,Zhang,Shi-Bao,&Huang,Wei.(2021).Elevated CO2 Concentration Alters Photosynthetic Performances under Fluctuating Light in Arabidopsis thaliana.CELLS,10(9),2329.
MLA	Tan,Shun-Ling,et al."Elevated CO2 Concentration Alters Photosynthetic Performances under Fluctuating Light in Arabidopsis thaliana".CELLS 10.9(2021):2329.