Multi-leveled insights into the response of the eelgrass Zostera marina L to Cu than Cd exposure

doi:10.1016/j.scitotenv.2022.157057

	Multi-leveled insights into the response of the eelgrass Zostera marina L to Cu than Cd exposure
	Qiao, Yongliang 1,2,3,4,5,6,7; Zhang, Yu2,3,4,5,6,7 ; Xu, Shaochun2,3,4,5,6,7 ; Yue, Shidong2,3,4,5,6,7 ; Zhang, Xiaomei2,3,4,5,6,7 ; Liu, Mingjie2,3,4,5,6,7 ; Sun, Lingling 8; Jia, Xiaoping 1; Zhou, Yi2,3,4,5,6,7
	2022-11-01
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
卷号	845 页码:13
通讯作者	Jia, Xiaoping([email protected]) ; Zhou, Yi([email protected])
摘要	Seagrass beds are recognized as critical and among the most vulnerable habitats on the planet; seagrass colonize the coastal waters where heavy metal pollution is a serious problem. In this study, the toxic effects of copper and cadmium in the eelgrass Zostera marina L. were observed at the individual, subcellular, physiologically biochemical, and molec-ular levels. Both Cu and Cd stress significantly inhibited the growth and the maximal quantum yield of photosystem II (Fv/Fm); and high temperature increased the degree of heavy metal damage, while low temperatures inhibited damage. The half-effect concentration (EC50) of eelgrass was 28.9 mu M for Cu and 2246.8 mu M for Cd, indicating Cu was much more toxic to eelgrass than Cd. The effect of Cu and Cd on photosynthesis was synergistic. After 14 days of enrichment, the concentration of Cu in leaves and roots of Z. marina was 48 and 37 times higher than that in leaf sheath, and 14 and 11 times higher than that in rhizome; and the order of Cd concentration in the organs was root > leaf > rhizome > sheath. Heavy metal uptake mainly occurred in the organelles, and Cd enrichment also occurred to a certain extent in the cytoplasm. Transcriptome results showed that a number of photosynthesis-related KEGG enrichment pathways and GO terms were significantly down-regulated under Cd stress, suggesting that the photosynthetic system of eelgrass was severely damaged at the transcriptome level, which was consistent with the significant inhibition of Fv/Fm and leaf yellowing. Under Cu stress, the genes related to glutathione metabolic path-way were significantly up-regulated, together with the increased autioxidant enzyme activity of GSH-PX. In addition, the results of recovery experiment indicated that the damage caused by short-term Cd and Cu stress under EC50 was reversible. These results provide heavy metal toxic effects at multiple levels and information relating to the heavy metal resistance strategies evolved by Z. marina to absorb and isolate heavy metals, and highlight the phytoremediation potential of this species especially for Cd.
关键词	Heavy metal exposure Ecotoxicity Photosynthesis and growth Organ and subcellular accumulation Autioxidant enzyme activities Transcriptomics Bioindicator Phytoremediation Seagrass
DOI	10.1016/j.scitotenv.2022.157057
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2019YFD0901301]; National Natural Science Foundation of China[32000269/41606192]; Natural Science Foundation of Shandong Province[ZR2020QD106]; National Science & Technology Basic Work Program[2015FY110600]; Key Research Project of Frontier Sciences of CAS[QYZDB-SSW-DQC041-1]; Taishan Scholars Program (Distinguished Taishan Scholars)
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000836115400012
出版者	ELSEVIER
引用统计	被引频次：5[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/337002/180901
专题	海洋生态与环境科学重点实验室
通讯作者	Jia, Xiaoping; Zhou, Yi
作者单位	1.Qingdao Univ Sci & Technol, Sch Environm & Safety Engn, Qingdao 266042, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266237, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China 5.Chinese Acad Sci, Inst Oceanol, CAS Engn Lab Marine Ranching, Qingdao 266071, Peoples R China 6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 7.Shandong Prov Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China 8.Chinese Acad Sci, Inst Oceanol, Publ Tech Supporting Ctr, Qingdao 266071, Peoples R China
第一作者单位	海洋生态与环境科学重点实验室; 中国科学院海洋研究所
通讯作者单位	海洋生态与环境科学重点实验室; 中国科学院海洋研究所
推荐引用方式 GB/T 7714	Qiao, Yongliang,Zhang, Yu,Xu, Shaochun,et al. Multi-leveled insights into the response of the eelgrass Zostera marina L to Cu than Cd exposure[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,845:13.
APA	Qiao, Yongliang.,Zhang, Yu.,Xu, Shaochun.,Yue, Shidong.,Zhang, Xiaomei.,...&Zhou, Yi.(2022).Multi-leveled insights into the response of the eelgrass Zostera marina L to Cu than Cd exposure.SCIENCE OF THE TOTAL ENVIRONMENT,845,13.
MLA	Qiao, Yongliang,et al."Multi-leveled insights into the response of the eelgrass Zostera marina L to Cu than Cd exposure".SCIENCE OF THE TOTAL ENVIRONMENT 845(2022):13.

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