Genomic convergence underlying high-altitude adaptation in alpine plants

doi:10.1111/jipb.13485

KIB OpenIR

	Genomic convergence underlying high-altitude adaptation in alpine plants
	Zhang,Xu; Kuang,Tianhui; Dong,Wenlin; Qian,Zhihao; Zhang,Huajie; Landis,Jacob B. B.; Feng,Tao; Li,Lijuan; Sun,Yanxia; Huang,Jinling; Deng,Tao; Wang,Hengchang; Sun,Hang
	2023
发表期刊	JOURNAL OF INTEGRATIVE PLANT BIOLOGY
ISSN	1744-7909
摘要	Evolutionary convergence is one of the most striking examples of adaptation driven by natural selection. However, genomic evidence for convergent adaptation to extreme environments remains scarce. Here, we assembled reference genomes of two alpine plants, Saussurea obvallata (Asteraceae) and Rheum alexandrae (Polygonaceae), with 37,938 and 61,463 annotated protein-coding genes. By integrating an additional five alpine genomes, we elucidated genomic convergence underlying high-altitude adaptation in alpine plants. Our results detected convergent contractions of disease-resistance genes in alpine genomes, which might be an energy-saving strategy for surviving in hostile environments with only a few pathogens present. We identified signatures of positive selection on a set of genes involved in reproduction and respiration (e.g., MMD1, NBS1, and HPR), and revealed signatures of molecular convergence on genes involved in self-incompatibility, cell wall modification, DNA repair and stress resistance, which may underlie adaptation to extreme cold, high ultraviolet radiation and hypoxia environments. Incorporating transcriptomic data, we further demonstrated that genes associated with cuticular wax and flavonoid biosynthetic pathways exhibit higher expression levels in leafy bracts, shedding light on the genetic mechanisms of the adaptive greenhouse morphology. Our integrative data provide novel insights into convergent evolution at a high-taxonomic level, aiding in a deep understanding of genetic adaptation to complex environments.
关键词	adaptation alpine plants evolutionary rates genomic convergence greenhouse morphology high altitude PHYLOGENETIC ANALYSIS ARABIDOPSIS EVOLUTION PROTEIN GENE ALIGNMENT PROGRAM FAMILY TOOL BIOSYNTHESIS
学科领域	Biochemistry & Molecular Biology ; Plant Sciences
DOI	10.1111/jipb.13485
收录类别	SCI
WOS记录号	WOS:000972980200001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/75490
专题	中国科学院昆明植物研究所
推荐引用方式 GB/T 7714	Zhang,Xu,Kuang,Tianhui,Dong,Wenlin,et al. Genomic convergence underlying high-altitude adaptation in alpine plants[J]. JOURNAL OF INTEGRATIVE PLANT BIOLOGY,2023.
APA	Zhang,Xu.,Kuang,Tianhui.,Dong,Wenlin.,Qian,Zhihao.,Zhang,Huajie.,...&Sun,Hang.(2023).Genomic convergence underlying high-altitude adaptation in alpine plants.JOURNAL OF INTEGRATIVE PLANT BIOLOGY.
MLA	Zhang,Xu,et al."Genomic convergence underlying high-altitude adaptation in alpine plants".JOURNAL OF INTEGRATIVE PLANT BIOLOGY (2023).

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