Photosynthetic and metabolic responses of eelgrass Zostera marina L. to short-term high-temperature exposure

被引：0
作者：
Yaping Gao
Zengjie Jiang
Meirong Du
Jinghui Fang
Weiwei Jiang
Jianguang Fang
机构：
[1] Chinese Academy of Sciences,Institute of Oceanology
[2] Chinese Academy of Fishery Sciences,Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute
[3] University of Chinese Academy of Sciences,Function Laboratory for Marine Fisheries Science and Food Production Processes
[4] Qingdao National Laboratory for Marine Science and Technology,undefined
来源：
Journal of Oceanology and Limnology | 2019年 / 37卷
关键词：
high temperature; eelgrass; photosynthetic response; metabolome;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In recent years, extreme heat events have occurred worldwide and the ocean temperature has been rising, causing stress on the photosynthesis and growth of seagrass. Metabolomics enables detection of metabolic changes under environmental stress. In this study, the photosynthetic physiology and metabolic changes of the eelgrass Zostera marina L. in response to 48 h exposure to 32°C were investigated. The results showed that high temperature induced significant inhibition of photosynthetic efficiency (Δ F / F′m ) (23.9% lower than the control), enhanced respiration (58.3% higher), and decreased carbohydrate decomposition products and tricarboxylic acid (TCA) cycle intermediate products, indicating that the energy supply of the eelgrass may be insufficient at high temperature. In addition, high temperature decreased stearic acid and linoleic acid in eelgrass, suggesting the composition of the membrane system of eelgrass may change at high temperature and implying that high temperature may cause the membrane system to be unstable.
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页码：199 / 209
页数：10
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