Genomic and transcriptomic investigations of the evolutionary transition from oviparity to viviparity

CORC > 昆明动物研究所 > 昆明动物研究所 > 遗传资源与进化国家重点实验室 > 分子进化基因组学

	Genomic and transcriptomic investigations of the evolutionary transition from oviparity to viviparity
	Gao, W; Sun, YB; Zhou, WW; Xiong, ZJ; Chen, LN; Li, H; Fu, TT; Xu, K; Xu, W; Ma, L
刊名	PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
	2019
卷号	116 期号:9 页码:3646-3655
ISSN号	0027-8424
英文摘要	Viviparous (live-bearing) vertebrates have evolved repeatedly within otherwise oviparous (egg-laying) clades. Over two-thirds of these changes in vertebrate reproductive parity mode happened in squamate reptiles, where the transition has happened between 98 and 129 times. The transition from oviparity to viviparity requires numerous physiological, morphological, and immunological changes to the female reproductive tract, including eggshell reduction, delayed oviposition, placental development for supply of water and nutrition to the embryo by the mother, enhanced gas exchange, and suppression of maternal immune rejection of the embryo. We performed genomic and transcriptomic analyses of a closely related oviparous-viviparous pair of lizards (Phrynocephalus przewalskii and Phrynocephalus vlangalii) to examine these transitions. Expression patterns of maternal oviduct through reproductive development of the egg and embryo differ markedly between the two species. We found changes in expression patterns of appropriate genes that account for each of the major aspects of the oviparity to viviparity transition. In addition, we compared the gene sequences in transcriptomes of four oviparous-viviparous pairs of lizards in different genera (Phrynocephalus, Eremias, Scincella, and Sphenomorphus) to look for possible gene convergence at the sequence level. We discovered low levels of convergence in both amino acid replacement and evolutionary rate shift. This suggests that most of the changes that produce the oviparity-viviparity transition are changes in gene expression, so occasional reversals to oviparity from viviparitymay not be as difficult to achieve as has been previously suggested.
语种	英语
内容类型	期刊论文
源URL	[http://ir.kiz.ac.cn:8080/handle/152453/12587]
专题	昆明动物研究所_分子进化基因组学
推荐引用方式 GB/T 7714	Gao, W,Sun, YB,Zhou, WW,et al. Genomic and transcriptomic investigations of the evolutionary transition from oviparity to viviparity[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2019,116(9):3646-3655.
APA	Gao, W.,Sun, YB.,Zhou, WW.,Xiong, ZJ.,Chen, LN.,...&Che, J.(2019).Genomic and transcriptomic investigations of the evolutionary transition from oviparity to viviparity.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,116(9),3646-3655.
MLA	Gao, W,et al."Genomic and transcriptomic investigations of the evolutionary transition from oviparity to viviparity".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 116.9(2019):3646-3655.