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Effect of Hypoxia on Photosystem II of Tropical Seagrass Enhalus acoroides in the Dark
Che, Xingkai1,2; Zhang, Tie1,2,3; Li, Hu1,2; Zhang, Litao1,2,4; Liu, Jianguo1,2,4
2021-11-03
发表期刊PHOTOCHEMISTRY AND PHOTOBIOLOGY
ISSN0031-8655
页码8
通讯作者Liu, Jianguo(jgliu@qdio.ac.cn)
摘要Hypoxia induced by eutrophication has become an important factor threatening the survival of coastal life such as Enhalus acoroides. The purpose of the current study was to explore the effect of hypoxia on photosystem II (PSII) of E. acoroides in the dark. The results showed that long-term dark hypoxia damages PSII activity of E. acoroides. The lower the oxygen content and the longer the hypoxic duration, the more seriously PSII was damaged and the less light-independent recovery parts of the damaged PSII. The damage to PSII caused by hypoxia was unrelated to ROS but related to respiration, because the respiration rate decreased with the decrease of oxygen content and PSII activity decreased significantly even at a normal oxygen content after the inhibition of aerobic respiratory pathway. Hypoxia reduced energy fluxes between the antennas and the RCs, and generated many inactive RCs, which significantly reduced the electron transfer efficiency of PSII. Severe hypoxia (2.65 mg L-1 oxygen content) caused chlorophyll degradation. The study demonstrated that hypoxia damages PSII of E. acoroides and inhibits PSII recovery in the dark. We suggested that hypoxia together with other environment stressors would be the key reason for the decline of E. acoroides meadows.
DOI10.1111/php.13522
收录类别SCI
语种英语
资助项目Strategic Priority Research Program of Chinese Academy of Sciences[XDB42000000] ; National Natural Science Foundation of China[32071577] ; International Partnership Program of Chinese Academy of Sciences[GJHZ2039] ; Shandong Provincial Natural Science Foundation[ZR201911130493]
WOS研究方向Biochemistry & Molecular Biology ; Biophysics
WOS类目Biochemistry & Molecular Biology ; Biophysics
WOS记录号WOS:000714083200001
出版者WILEY
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/177126
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, CAS, Qingdao, Peoples R China
2.Chinese Acad Sci, Inst Oceanol, Ctr Ocean Mega Sci, Shandong Key Lab Expt Marine Biol, Qingdao, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
4.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao, Shandong, Peoples R China
第一作者单位中国科学院海洋研究所
通讯作者单位中国科学院海洋研究所
推荐引用方式
GB/T 7714
Che, Xingkai,Zhang, Tie,Li, Hu,et al. Effect of Hypoxia on Photosystem II of Tropical Seagrass Enhalus acoroides in the Dark[J]. PHOTOCHEMISTRY AND PHOTOBIOLOGY,2021:8.
APA Che, Xingkai,Zhang, Tie,Li, Hu,Zhang, Litao,&Liu, Jianguo.(2021).Effect of Hypoxia on Photosystem II of Tropical Seagrass Enhalus acoroides in the Dark.PHOTOCHEMISTRY AND PHOTOBIOLOGY,8.
MLA Che, Xingkai,et al."Effect of Hypoxia on Photosystem II of Tropical Seagrass Enhalus acoroides in the Dark".PHOTOCHEMISTRY AND PHOTOBIOLOGY (2021):8.
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