气候变化领域集成服务门户(CCPortal): Population transcriptomics uncover the relative roles of positive selection and differential expression in Batrachium bungei adaptation to the Qinghai-Tibetan plateau

CCPortal

DOI	10.1007/s00299-023-03005-w
	Population transcriptomics uncover the relative roles of positive selection and differential expression in Batrachium bungei adaptation to the Qinghai-Tibetan plateau
	Yu, Xiaolei; Wei, Pei; Zhao, Shuqi; Chen, Zhuyifu; Li, Xinzhong; Zhang, Wencai; Liu, Chenlai; Yang, Yujiao; Li, Xiaoyan; Liu, Xing
发表日期	2023
ISSN	0721-7714
EISSN	1432-203X
起始页码	879
结束页码	893
卷号	42 期号:5
英文摘要	Key messagePositive selection genes are related to metabolism, while differentially expressed genes are related to photosynthesis, suggesting that genetic adaptation and expression regulation may play independent roles in different gene classes.Genome-wide investigation of the molecular mechanisms for high-altitude adaptation is an intriguing topic in evolutionary biology. The Qinghai-Tibet Plateau (QTP) with its extremely variable environments is an ideal site for studying high-altitude adaptation. Here, we used transcriptome data of 100 individuals from 20 populations collected from various altitudes on the QTP to investigate the adaptive mechanisms of the aquatic plant Batrachium bungei at both the genetic and transcriptional level. To explore genes and biological pathways that may contribute to QTP adaptation, we employed a two-step approach, in which we identified positively selected genes and differentially expressed genes using the landscape genomic and differential expression approaches. The positive selection analysis showed that genes involved in metabolic regulation played a crucial role in B. bungei adaptation to the extreme environments of the QTP, especially intense ultraviolet radiation. Altitude-based differential expression analysis suggested that B. bungei could increase the rate of energy dissipation or reduce the efficiency of light energy absorption by down regulating the expression of photosynthesis-related genes to adapt to the strong ultraviolet radiation. Weighted gene co-expression network analysis identified ribosomal genes as hubs of altitude adaptation in B. bungei. Only a small part of genes (about 10%) overlapped between positively selected genes and differentially expressed genes in B. bungei, suggesting that genetic adaptation and gene expression regulation might play relatively independent roles in different categories of functional genes. Taken together, this study enriches our understanding of the high-altitude adaptation mechanism of B. bungei on the QTP.
关键词	Batrachium bungei Population transcriptomics Positive selection analysis Differential expression analysis Adaptation Qinghai-Tibet plateau
英文关键词	LOCAL ADAPTATION; GENE-EXPRESSION; GENOME SCANS; EVOLUTION; RESPONSES; PLANT; DETERMINANTS; ENVIRONMENTS; ASSOCIATION; DIVERGENCE
WOS研究方向	Plant Sciences
WOS记录号	WOS:000952761200001
来源期刊	PLANT CELL REPORTS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283121
作者单位	Wuhan University; Tibet University; Wuhan University
推荐引用方式 GB/T 7714	Yu, Xiaolei,Wei, Pei,Zhao, Shuqi,et al. Population transcriptomics uncover the relative roles of positive selection and differential expression in Batrachium bungei adaptation to the Qinghai-Tibetan plateau[J],2023,42(5).
APA	Yu, Xiaolei.,Wei, Pei.,Zhao, Shuqi.,Chen, Zhuyifu.,Li, Xinzhong.,...&Liu, Xing.(2023).Population transcriptomics uncover the relative roles of positive selection and differential expression in Batrachium bungei adaptation to the Qinghai-Tibetan plateau.PLANT CELL REPORTS,42(5).
MLA	Yu, Xiaolei,et al."Population transcriptomics uncover the relative roles of positive selection and differential expression in Batrachium bungei adaptation to the Qinghai-Tibetan plateau".PLANT CELL REPORTS 42.5(2023).