Gene expression changes of seven stonefly species in responses to a latitudinal-environmental gradient
Gene expression changes of seven stonefly species in responses to a latitudinal-environmental gradient
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七个石蝇物种响应纬度环境梯度的基因表达变化
DOI：
10.1101/2020.09.22.309179
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Kozo Watanabe
中科院分区：
文献类型：
--
作者：
Maribet Gamboa;Yusuke Gotoh;Arnelyn D. Doloriras-Larano;Kozo Watanabe
已知纵向变异为基因组变异创造了强大的选择压力，使生物体能够适应和生存。通过改变基因表达模式，生物体可以改变其适应能力，以异质性的环境条件沿着纬度梯度，然而，有一个差距，我们的理解如何在野生物种的生理后果的影响，以及如何改变环境条件作用于多个物种。在这里，我们调查了如何从日本的四个地理区域采样的七个流石松物种不同的纬度变化的反应，通过测量基因表达（RNA测序）物种内的差异和物种间的基因共表达。我们发现，大量的基因（622）差异表达沿着纬度梯度。在高纬度地区发现的高物种特异性基因表达多样性可能与低温和高排水量有关，这表明了石杉物种的适应潜力。相比之下，在低纬度地区观察到物种之间类似的基因表达模式，这表明较强的环境压力发生在较温暖的地区。加权基因共表达网络分析（WGCNA）确定了22个基因具有相似的表达模式之间的物种沿着纬度梯度。在四个地理区域中，发现两个区域的共表达基因的高差异表达模式，表明当地环境强烈影响这些地区物种之间的基因表达模式。呼吸，代谢和发育的共表达基因表现出纬度渐变，显示出明显的证据，不同的适应性反应的纬度。我们的研究结果表明，石松物种差异适应当地的环境条件，并暗示，适应基因表达可以共享多个物种在环境胁迫条件下。这项研究强调了在评估环境变化对水生昆虫群落的影响时考虑多个物种的重要性，以及科普环境变化的可能机制。
Latitudinal variation has been known to create strong selection pressure for genomic variation that enables the adaptation and survival of organisms. By altering gene expression patterns, organisms can modify their adaptive potential to heterogeneous environmental conditions along a latitudinal gradient; however, there is a gap in our understanding of how physiological consequences in wild species are affected and how changing environmental conditions act on multiple species. Here, we investigated how seven stream stonefly species sampled from four geographical regions in Japan differ in their responses to latitudinal variations by measuring gene expression (RNA-sequencing) differences within species and gene co-expression among species. We found that a large number of genes (622) were differentially expressed along the latitudinal gradient. The high species-specific gene expression diversity found at higher latitude regions was probably associated with low temperatures and high water discharge, which suggests the adaptive potential of stonefly specie. In contrast, similar gene expression patterns among species was observed at lower latitudes, which suggests that strong environmental stress occurs in warmer regions. Weighted gene co-expression network analysis (WGCNA) identified 22 genes with similar expression patterns among species along the latitudinal gradient. Among the four geographical regions, high differential expression patterns in the co-expressed genes from two regions were found, suggesting that the local environment strongly affects gene expression patterns among species in these regions. Respiration, metabolism, and developmental co-expressed genes exhibited a latitudinal cline, showing clear evidence of divergent adaptive responses to latitude. Our findings demonstrate that stonefly species are differentially adapted to local environmental conditions, and imply that adaptation in gene expression could be shared by multiple species under environmental stress conditions. This study highlights the importance of considering multiple species when evaluating the consequences of environmental changes on aquatic insect communities, and possible mechanisms to cope with environmental changes.
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影响因子：
4.1
作者：
Eizaguirre C;Baltazar-Soares M
通讯作者：
Baltazar-Soares M
阿巴拉契亚南部流域可能由气候引起的石蝇转移
影响因子：
1.8
作者：
A. Sheldon
通讯作者：
A. Sheldon
影响因子：
64.5
作者：
Salazar, Guillem;Paoli, Lucas;Wincker, Patrick
通讯作者：
Wincker, Patrick
影响因子：
4.9
作者：
Mead, Alayna;Penaloza Ramirez, Juan;Sork, Victoria L.
通讯作者：
Sork, Victoria L.
影响因子：
3
作者：
Chou, Hsuan;Pathmasiri, Wimal;Buchwalter, David B.
通讯作者：
Buchwalter, David B.