Institutional Repository of Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences
| PSI-driven cyclic electron flow partially alleviates the peroxidation of red alga Gelidium amansii (Gelidiaceae) caused by temporary high temperature | |
| Li, Yongfu1,2,3; Liu, Jianguo1,2,3; Zhang, Litao1,2,3 | |
| 2021-09-16 | |
| Source Publication | JOURNAL OF OCEANOLOGY AND LIMNOLOGY
 |
| ISSN | 2096-5508 |
| Pages | 10 |
| Corresponding Author | Liu, Jianguo(jgliu@qdio.ac.cn) |
| Abstract | 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. |
| Keyword | cyclic electron flow Gelidium amansii heat stress chlorophyll fluorescence quantum yield natural distribution |
| DOI | 10.1007/s00343-021-0452-z |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key R&D Program of China[2019YFD0900700] |
| WOS Research Area | Marine & Freshwater Biology ; Oceanography |
| WOS Subject | Limnology ; Oceanography |
| WOS ID | WOS:000696496400004 |
| Publisher | SCIENCE PRESS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.qdio.ac.cn/handle/337002/176413 |
| Collection | 实验海洋生物学重点实验室 |
| Corresponding Author | Liu, Jianguo |
| Affiliation | 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 |
| First Author Affilication | Center for Ocean Mega-Science, Chinese Academy of Sciences |
| Corresponding Author Affilication | Center for Ocean Mega-Science, Chinese Academy of Sciences |
| Recommended Citation 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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Li2021_Article_PSI-d（538KB） | 期刊论文 | 出版稿 | 延迟开放 | CC BY-NC-SA | View 2023-7-1后可获取 | |
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