Interspecies differences in the transcriptome response of corals to acute heat stress.

IF 2.3 3区 生物学 Q2 MULTIDISCIPLINARY SCIENCES
PeerJ Pub Date : 2024-12-10 eCollection Date: 2024-01-01 DOI:10.7717/peerj.18627
Jeric Da-Anoy, Niño Posadas, Cecilia Conaco
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引用次数: 0

Abstract

Rising sea surface temperatures threaten the survival of corals worldwide, with coral bleaching events becoming more commonplace. However, different coral species are known to exhibit variable levels of susceptibility to thermal stress. To elucidate genetic mechanisms that may underlie these differences, we compared the gene repertoire of four coral species, Favites colemani, Montipora digitata, Acropora digitifera, and Seriatopora caliendrum, that were previously demonstrated to have differing responses to acute thermal stress. We found that more tolerant species, like F. colemani and M. digitata, possess a greater abundance of antioxidant protein families and chaperones. Under acute thermal stress conditions, only S. caliendrum showed a significant bleaching response, which was accompanied by activation of the DNA damage response network and drastic upregulation of stress response genes (SRGs). This suggests that differences in SRG orthologs, as well as the mechanisms that control SRG expression response, contribute to the ability of corals to maintain stability of physiological functions required to survive shifts in seawater temperature.

海面温度不断升高威胁着全球珊瑚的生存,珊瑚白化现象越来越普遍。然而,已知不同珊瑚物种对热应力的易感性程度不同。为了阐明可能导致这些差异的遗传机制,我们比较了四个珊瑚物种(Favites colemani、Montipora digitata、Acropora digitifera 和 Seriatopora caliendrum)的基因库。我们发现,耐受性更强的物种,如 F. colemani 和 M. digitata,拥有更丰富的抗氧化蛋白家族和伴侣蛋白。在急性热胁迫条件下,只有 S. caliendrum 出现了明显的漂白反应,同时 DNA 损伤反应网络被激活,胁迫反应基因(SRGs)急剧上调。这表明,SRG 同源物的差异以及控制 SRG 表达反应的机制有助于珊瑚维持在海水温度变化中生存所需的生理功能的稳定性。
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来源期刊
PeerJ
PeerJ MULTIDISCIPLINARY SCIENCES-
CiteScore
4.70
自引率
3.70%
发文量
1665
审稿时长
10 weeks
期刊介绍: PeerJ is an open access peer-reviewed scientific journal covering research in the biological and medical sciences. At PeerJ, authors take out a lifetime publication plan (for as little as $99) which allows them to publish articles in the journal for free, forever. PeerJ has 5 Nobel Prize Winners on the Board; they have won several industry and media awards; and they are widely recognized as being one of the most interesting recent developments in academic publishing.
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