PSI-driven cyclic electron flow partially alleviates the peroxidation of red alga Gelidium amansii (Gelidiaceae) caused by temporary high temperature

doi:10.1007/s00343-021-0452-z

CORC > 海洋研究所 > 中国科学院海洋研究所 > 实验海洋生物学重点实验室

	PSI-driven cyclic electron flow partially alleviates the peroxidation of red alga Gelidium amansii (Gelidiaceae) caused by temporary high temperature
	Li, Yongfu 1,2,3; Liu, Jianguo 1,2,3; Zhang, Litao 1,2,3
刊名	JOURNAL OF OCEANOLOGY AND LIMNOLOGY
	2021-09-16
页码	10
关键词	cyclic electron flow Gelidium amansii heat stress chlorophyll fluorescence quantum yield natural distribution
ISSN号	2096-5508
DOI	10.1007/s00343-021-0452-z
通讯作者	Liu, Jianguo(jgliu@qdio.ac.cn)
英文摘要	PSI-driven cyclic electron flow (CEF-I) helps higher plants avoid severe heat damage. Gelidium amansii, a red seaweed used in the production of agar, inhabits subtidal rocks but can be found in the intertidal zone. The biological role of CEF-I is still unclear in this organism. Wild G. amansii was exposed to 30 degrees C heat stress for 12 h with continuous lighting. The results showed that treatment at 30 degrees C gradually decreased maximal PSII photochemical efficiency (F-v/F-m), linear electron transfer rate, and activity of photosynthetic reaction center. Both the maximal photochemical efficiency under light (F-v '/F-m ') and maximum quantum yield of light-adapted PSII (phi(PSII)) were maintained at a relatively stable level during the initial 6 h and then significantly decreased at 12 h. The up-regulated CEF-I helps to enhance proton gradient transfer across thylakoid membrane to protect oxygen-evolving complex against heat damage. Following the addition of a CEF-I inhibitor to plants, the F-v/F-m greatly decreased, suggesting that the CEF-I alleviates degree of photoinhibition caused by strong light. The results of measurement of antioxidant enzymes, including superoxide dismutase (SOD), ascorbate peroxidase (APX) and catalase (CAT), and the contents of H2O2 and malonaldehyde (MDA) provided additional evidence that CEF-I plays a protective role to a certain extent for G. amansii to manage stress at 30 degrees C. Therefore, it can be concluded that CEF-I enables G. amansii to survive in intertidal zones by protecting it from the heat damage caused by high temperature stress.
资助项目	National Key R&D Program of China[2019YFD0900700]
WOS研究方向	Marine & Freshwater Biology ; Oceanography
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000696496400004
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/176412]
专题	海洋研究所_实验海洋生物学重点实验室
通讯作者	Liu, Jianguo
作者单位	1.Chinese Acad Sci, Ctr Ocean Megasci, Inst Oceanol, CAS, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Shandong Prov Key Lab Expt Marine Biol, Inst Oceanol, Ctr Ocean Megasci, Qingdao 266071, Peoples R China 3.Pilot Natl Lab Marine Sci & Technol Qingdao, Marine Biol & Biotechnol Lab, Qingdao 266237, Peoples R China
推荐引用方式 GB/T 7714	Li, Yongfu,Liu, Jianguo,Zhang, Litao. PSI-driven cyclic electron flow partially alleviates the peroxidation of red alga Gelidium amansii (Gelidiaceae) caused by temporary high temperature[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2021:10.
APA	Li, Yongfu,Liu, Jianguo,&Zhang, Litao.(2021).PSI-driven cyclic electron flow partially alleviates the peroxidation of red alga Gelidium amansii (Gelidiaceae) caused by temporary high temperature.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,10.
MLA	Li, Yongfu,et al."PSI-driven cyclic electron flow partially alleviates the peroxidation of red alga Gelidium amansii (Gelidiaceae) caused by temporary high temperature".JOURNAL OF OCEANOLOGY AND LIMNOLOGY (2021):10.