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Response of the eelgrass (Zostera marina L.) to the combined effects of high temperatures and the herbicide, atrazine
Gao, Yaping1,2,4; Fang, Jianguang1,3; Du, Meirong1,3; Fang, Jinghui1,3; Jiang, Weiwei1,2; Jiang, Zengjie1,3
2017-09-01
Source PublicationAQUATIC BOTANY
Volume142Pages:41-47
SubtypeArticle
AbstractHigh temperatures, especially in the summer or during local heat waves, often coincide with high concentrations of herbicides in some estuarine areas during flood plumes. The combined effects of thermal stress (at 26-32 degrees C) and the herbicide atrazine (at concentrations of 0, 3 and 10 mu g L-1) on eelgrass (Zostera marina L.) were studied in a 7-day exposure experiment. The results showed that both atrazine and temperatures above 30 degrees C inhibited the photosynthetic efficiency and energy conversion potential of the photosystem II (PsiI) as indicated by the effective quantum yield (Delta F/F'm) and the maximum yield (Fv/Fm), respectively. High temperatures (31 degrees C and 32 degrees C) decreased the Ch1 a content and stopped the leaf growth of eelgrass. Atrazine concentration had no effect on the photosynthetic pigments at all temperatures; however, decreased leaf growth rate was detected at 30 degrees C. A high level of agreement between the observed and predicted inhibition of photosynthesis by an Independent Action (IA) model demonstrates that the combined effects of high temperature and atrazine are more harmful to eelgrass than is a single pressure. The present study adds further evidence for seagrass protection and environmental management under the hypothesis that thermal stress combined with herbicides pose a greater threat to seagrasses.
KeywordHigh Temperature Atrazine Zostera Marina L. Chlorophyll Fluorescence Photosynthetic Pigment Leaf Growth Rate
DOI10.1016/j.aquabot.2017.06.005
Indexed BySCI
Language英语
WOS IDWOS:000412037100006
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/143197
Collection实验海洋生物学重点实验室
海洋生态与环境科学重点实验室
Affiliation1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Minist Agr, Key Lab Sustainable Dev Marine Fisheries, Qingdao 266071, Peoples R China
2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
3.Qingdao Natl Lab Marine Sci & Technol, Funct Lab Marine Fisheries Sci & Food Prod Proc, Qingdao 266071, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Gao, Yaping,Fang, Jianguang,Du, Meirong,et al. Response of the eelgrass (Zostera marina L.) to the combined effects of high temperatures and the herbicide, atrazine[J]. AQUATIC BOTANY,2017,142:41-47.
APA Gao, Yaping,Fang, Jianguang,Du, Meirong,Fang, Jinghui,Jiang, Weiwei,&Jiang, Zengjie.(2017).Response of the eelgrass (Zostera marina L.) to the combined effects of high temperatures and the herbicide, atrazine.AQUATIC BOTANY,142,41-47.
MLA Gao, Yaping,et al."Response of the eelgrass (Zostera marina L.) to the combined effects of high temperatures and the herbicide, atrazine".AQUATIC BOTANY 142(2017):41-47.
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