气候变化领域集成服务门户(CCPortal): Genome evolution of the psammophyte Pugionium for desert adaptation and further speciation

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DOI	10.1073/pnas.2025711118
	Genome evolution of the psammophyte Pugionium for desert adaptation and further speciation
	Hu Q.; Ma Y.; Mándaková T.; Shi S.; Chen C.; Sun P.; Zhang L.; Feng L.; Zheng Y.; Feng X.; Yang W.; Jiang J.; Li T.; Zhou P.; Yu Q.; Wan D.; Lysak M.A.; Xi Z.; Nevo E.; Liu J.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:42
英文摘要	Deserts exert strong selection pressures on plants, but the underlying genomic drivers of ecological adaptation and subsequent speciation remain largely unknown. Here, we generated de novo genome assemblies and conducted population genomic analyses of the psammophytic genus Pugionium (Brassicaceae). Our results indicated that this bispecific genus had undergone an allopolyploid event, and the two parental genomes were derived from two ancestral lineages with different chromosome numbers and structures. The postpolyploid expansion of gene families related to abiotic stress responses and lignin biosynthesis facilitated environmental adaptations of the genus to desert habitats. Population genomic analyses of both species further revealed their recent divergence with continuous gene flow, and the most divergent regions were found to be centered on three highly structurally reshuffled chromosomes. Genes under selection in these regions, which were mainly located in one of the two subgenomes, contributed greatly to the interspecific divergence in microhabitat adaptation. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Chromosomal structural variation; Desert plants; Microhabitat divergence; Polyploidization
语种	英语
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238616
作者单位	Key Laboratory for Bio-Resource, Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, China; State Key Laboratory of Grassland Agro-Ecosystem, Innovation Institute of Ecology and Life Sciences, Lanzhou University, Lanzhou, 730000, China; Central European Institute of Technology, Masaryk University, Brno, 625 00, Czech Republic; State Key Laboratory Breeding Base of Desertification and Aeolian Sand Disaster Combating, Gansu Desert Control Research Institute, Lanzhou, 730000, China; Institute of Evolution, University of Haifa, Mount Carmel, Haifa, 3498838, Israel
推荐引用方式 GB/T 7714	Hu Q.,Ma Y.,Mándaková T.,et al. Genome evolution of the psammophyte Pugionium for desert adaptation and further speciation[J],2021,118(42).
APA	Hu Q..,Ma Y..,Mándaková T..,Shi S..,Chen C..,...&Liu J..(2021).Genome evolution of the psammophyte Pugionium for desert adaptation and further speciation.Proceedings of the National Academy of Sciences of the United States of America,118(42).
MLA	Hu Q.,et al."Genome evolution of the psammophyte Pugionium for desert adaptation and further speciation".Proceedings of the National Academy of Sciences of the United States of America 118.42(2021).