典型文献
Increased light availability enhances tolerance against ocean acidification-related stress in the calcifying macroalga Halimeda opuntia
文献摘要：
Although the adverse impacts of ocean acidification (OA) on marine calcifiers have been investigated extensively, the anti-stress capabilities regulated by increased light availability are unclear. Herein, the interactive effects of three light levels (30 μmol photons/(m2·s), 150 μmol photons/(m2·s), and 240 μmol photons/(m2·s) combined with two pCO2 concentrations (400 ppmv and 1400 ppmv) on the physiological acclimation of the calcifying macroalga Halimeda opuntia were investigated using a pCO2-light coupling experiment. The OA negatively influenced algal growth, calcification, photosynthesis, and other physiological performances in H. opuntia. The relative growth rate under elevated pCO2 conditions significantly declined by 13.14％?41.29％, whereas net calcification rates decreased by nearly three-fold under OA conditions. Notably, increased light availability enhanced stress resistance through the accumulation of soluble organic molecules, especially soluble carbohydrate, soluble protein, and free amino acids, and in combination with metabolic enzyme-driven activities, OA stress was alleviated. The carotenoid content under low light conditions increased markedly, and the rapid light curve of the relative electron transport rate was enhanced significantly by increasing light intensities, indicating that this new organization of the photosynthetic machinery in H. opuntia accommodated light variations and elevated pCO2 conditions. Thus, the enhanced metabolic performance of the calcifying macroalga H. opuntia mitigated OA-related stress.
文献关键词：
中图分类号：
作者姓名：
Zhangliang Wei;Yating Zhang;Fangfang Yang;Lijuan Long
作者机构：
Key Laboratory of Tropical Marine Bio-resources and Ecology,South China Sea Institute of Oceanology,Chinese Academy of Sciences,Guangzhou 510301,China;Key Laboratory of Tropical Marine Biotechnology of Hainan Province,Sanya Institute of Ocean Eco-Environmental Engineering,South China Sea Institute of Oceanology,Sanya 572000,China;Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou),Guangzhou 511458,China;University of Chinese Academy of Sciences,Beijing 100049,China
文献出处：
引用格式：
[1]Zhangliang Wei;Yating Zhang;Fangfang Yang;Lijuan Long-.Increased light availability enhances tolerance against ocean acidification-related stress in the calcifying macroalga Halimeda opuntia)[J].海洋学报（英文版）,2022(12):123-132
A类：
Halimeda,opuntia,calcifiers
B类：
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AB值：
0.540118
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