Genomic signatures in the coral holobiont reveal host adaptations driven by Holocene climate change and reef specific symbionts.
Genomic signatures in the coral holobiont reveal host adaptations driven by Holocene climate change and reef specific symbionts.
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DOI：
10.1126/sciadv.abc6318
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发表时间：
2020-11
期刊：
影响因子：
13.6
通讯作者：
Miller DJ
中科院分区：
文献类型：
--
作者：
Cooke I;Ying H;Forêt S;Bongaerts P;Strugnell JM;Simakov O;Zhang J;Field MA;Rodriguez-Lanetty M;Bell SC;Bourne DG;van Oppen MJ;Ragan MA;Miller DJ
150个珊瑚群落的基因组揭示了与大堡礁过去气候变化有关的进化过程。在过去的气候变化中，人口和适应过程引起的遗传特征可以为预测物种对人为气候变化的反应提供信息。为了在Acropora tenuis（一种受到全球变暖威胁的造礁珊瑚）中识别这些特征，我们首先从长读段中组装基因组，然后使用来自中央近岸大堡礁的150个菌落的浅全基因组重测序来告知种群基因组分析。我们确定的主机，反映更新世分裂的人口结构，而珊瑚礁之间的光共生体的差异最有可能反映当代（全新世）的条件。宿主选择的特征与多种过程相关的基因有关，这些过程包括渗透调节、骨骼发育以及共生关系的建立和维持。我们的研究结果表明，适应冰后期气候变化的A。薄壳藻涉及对许多基因的选择，而珊瑚礁之间共生体特异性的差异似乎与宿主种群结构无关。
Genomes of 150 coral colonies reveal evolutionary processes related to past climatic change on the Great Barrier Reef. Genetic signatures caused by demographic and adaptive processes during past climatic shifts can inform predictions of species’ responses to anthropogenic climate change. To identify these signatures in Acropora tenuis, a reef-building coral threatened by global warming, we first assembled the genome from long reads and then used shallow whole-genome resequencing of 150 colonies from the central inshore Great Barrier Reef to inform population genomic analyses. We identify population structure in the host that reflects a Pleistocene split, whereas photosymbiont differences between reefs most likely reflect contemporary (Holocene) conditions. Signatures of selection in the host were associated with genes linked to diverse processes including osmotic regulation, skeletal development, and the establishment and maintenance of symbiosis. Our results suggest that adaptation to post-glacial climate change in A. tenuis has involved selection on many genes, while differences in symbiont specificity between reefs appear to be unrelated to host population structure.
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影响因子：
4.5
作者：
Gutenkunst RN;Hernandez RD;Williamson SH;Bustamante CD
通讯作者：
Bustamante CD
DOI：
10.1073/pnas.1208909109
发表时间：
2012-10-30
影响因子：
11.1
作者：
De'ath, Glenn;Fabricius, Katharina E.;Puotinen, Marji
通讯作者：
Puotinen, Marji
影响因子：
48
作者：
Chin, Chen-Shan;Peluso, Paul;Schatz, Michael C.
通讯作者：
Schatz, Michael C.
影响因子：
10.7
作者：
Katoh K;Standley DM
通讯作者：
Standley DM
影响因子：
3.3
作者：
Foll, Matthieu;Gaggiotti, Oscar
通讯作者：
Gaggiotti, Oscar