文献类型：期刊文献

英文题名：Transcriptome analysis reveals acclimation responses of pearl oysters to marine heatwaves

作者：Xu, Yang[1];Wang, Ziman[1];Zhang, Yuehuan[2];Liang, Jian[1,3];He, Guixiang[1];Liu, Xiaolong[1];Zheng, Zhe[1];Deng, Yuewen[1];Zhao, Liqiang[1]

机构：[1]Guangdong Ocean Univ, Fisheries Coll, Zhanjiang, Peoples R China;[2]Chinese Acad Sci, South China Sea Inst Oceanol, Guangdong Prov Key Lab Appl Marine Biol, Key Lab Trop Marine Rio Resources & Ecol, Guangzhou 510301, Peoples R China;[3]Tianjin Agr Univ, Dept Fisheries, Tianjin, Peoples R China

年份：2022

卷号：810

外文期刊名：SCIENCE OF THE TOTAL ENVIRONMENT

收录：SCI-EXPANDED(收录号：WOS:000767238500011)、、EI(收录号：20214611155441)、Scopus(收录号：2-s2.0-85118886847)、WOS

基金：The present study has been made possible by research grants from National Science Foundation of China (42076121, M-0163) , theDepartment of Education of Guangdong Province (2020KTSCX050) and the Starting Research Fund from Guangdong Ocean University (R20083) to LZ, and the Earmarked Fund for Modern Agro-industry Technology Research System (CARS-49) to YD.

语种：英文

外文关键词：Marine heatwaves; Acclimation; Gene expression; RNA-Seq; Pinctada maxima

外文摘要：Marine heatwaves (MHWs) are weather-timescale extreme events in the oceans and can have devastating effects on marine bivalves and ecosystems they support, with considerable socio-economic consequences. Yet, the extent to which marine bivalves have the capacity to acclimate and adapt to MHWs remains unknown. Understanding molecular responses to MHWs is imperative to develop strategies for conservation of ecologically and economically important marine organisms. Here, using RNA-Seq, we investigate how various MHWs scenarios elicit molecular changes in threatened and vulnerable pearl oysters, Pinctada maxima (Jameson). Acute exposure of MHWs - mimicked by rapid increases of seawater temperature from 24 degrees C to 28 degrees C and 32 degrees C, respectively - significantly affected the expression levels of metabolic and immune-related genes, with thermal stress responsive genes especially like HSP20, HSP70 and HSP90 being remarkably up-regulated. Following repeat exposure to MHWs, encouragingly, pearl oysters exhibited evident acclimation responses, as best exemplified by significantly lowered expression levels of key stress-responsive genes involved in metabolism and immunity in comparison to those observed during acute exposure. Findings of the present study provide a better understanding of molecular processes underpinning the acclimation and adaptation of marine bivalves to MHWs in the context of climate change. (c) 2021 Elsevier B.V. All rights reserved.