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

IOCAS-IR > 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
	2021-09-16
发表期刊	JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN	2096-5508
页码	10
通讯作者	Liu, Jianguo(jgliu@qdio.ac.cn)
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.
关键词	cyclic electron flow Gelidium amansii heat stress chlorophyll fluorescence quantum yield natural distribution
DOI	10.1007/s00343-021-0452-z
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2019YFD0900700]
WOS研究方向	Marine & Freshwater Biology ; Oceanography
WOS类目	Limnology ; Oceanography
WOS记录号	WOS:000696496400004
出版者	SCIENCE PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/176413
专题	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
第一作者单位	中国科学院海洋大科学研究中心
通讯作者单位	中国科学院海洋大科学研究中心
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.

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