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

文献类型： 外文期刊

第一作者： Gao Yaping

作者： Gao Yaping;Jiang Weiwei;Jiang Zengjie;Du Meirong;Fang Jinghui;Fang Jianguang;Gao Yaping;Jiang Weiwei;Jiang Zengjie;Du Meirong;Fang Jianguang

作者机构：

关键词： high temperature; eelgrass; photosynthetic response; metabolome

期刊名称：JOURNAL OF OCEANOLOGY AND LIMNOLOGY （ 影响因子：1.265； 五年影响因子：1.276 ）

ISSN： 2096-5508

年卷期： 2019 年 37 卷 1 期

页码：

收录情况： SCI

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 degrees C were investigated. The results showed that high temperature induced significant inhibition of photosynthetic efficiency (Delta 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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