Mutational meltdown or controlled chain reaction: The dynamics of rapid plastome evolution in the hyperdiversity of Poaceae

doi:10.1111/jse.12854

	Mutational meltdown or controlled chain reaction: The dynamics of rapid plastome evolution in the hyperdiversity of Poaceae
	Wang, Jie ; Fu, Gao-Fei ; Tembrock, Luke R.; Liao, Xue-Zhu ; Ge, Song3 ; Wu, Zhi-Qiang
	2023
发表期刊	JOURNAL OF SYSTEMATICS AND EVOLUTION
ISSN	1674-4918
卷号	61 期号:2 页码:328-344
摘要	The study of genomic structural evolution associated with accelerated evolutionary rates that result in avoidance of meltdown and increase biodiversity is becoming ever more possible as the number of available plastomes increases. To more comprehensively analyze rate heterogeneity among monocots and within Poaceae, we sequenced plastomes from four Poaceae species, combined them with publicly available data from similar to 200 plastomes, and conducted comparative analyses to quantify the pattern of rate heterogeneity between different lineages, functional groups, and periods of evolutionary time. We compared structural differences across the Poaceae to quantify how changes in plastome size correspond to different genomic subunits and the evolution of IR-SC junction boundaries. The substitution rates among ancestral Poaceae were inferred to be exceptionally rapid compared to other monocots but slowed after divergence into extant lineages, which could not be sufficiently explained by positive selection. As such, rapid rates in the ancestral lineage leading to Poaceae might be more closely linked to large-scale structural changes like the loss of ycf1 and ycf2. The total increase in plastome size across Poaceae was positively correlated with the total length of intergenic spacers, tandem repeats, and dispersed repeats as well as large single copy, and inverted repeats (IRs). The continuous evolution of IR-SC junction boundaries was asynchronous with sizes of total genome and subunits across Poaceae. Future work is needed to better understand what factors in ancestral Poaceae evolved to harness such rapid rates of plastome evolution, avoid a mutational meltdown, and escape the stagnation of strong purifying selection as well as if these factors could be utilized to synthetically control rates.
关键词	C-4 photosynthesis evolutionary rate inverted repeats monocots plastome size
学科领域	Plant Sciences
DOI	10.1111/jse.12854
收录类别	SCI
语种	英语
WOS关键词	CHLOROPLAST GENOME ; NUCLEOTIDE SUBSTITUTION ; PHYLOGENETIC ANALYSIS ; MITOCHONDRIAL GENOME ; PLANT MITOCHONDRIAL ; C-4 PHOTOSYNTHESIS ; RATES ; SEQUENCE ; SELECTION ; GENES
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000834853900001
出版者	WILEY
文献子类	Article
出版地	HOBOKEN
EISSN	1759-6831
资助机构	National Natural Science Foundation of China [31970244, 32170238] ; Science, Technology and Innovation Commission of Shenzhen Municipality [RCYX20200714114538196]
作者邮箱	wuzhiqiang@caas.cn
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/29099
专题	系统与进化植物学国家重点实验室
作者单位	1.Kunpeng Inst Modern Agr Foshan, Foshan 528200, Guangdong, Peoples R China 2.Agr Genom Inst Shenzhen, Minist Agr, Genome Anal Lab, Guangdong Lab Lingnan Modern Agr,Shenzhen Branch, Shenzhen, Guangdong, Peoples R China 3.Tembrock, Luke R.] Colorado State Univ, Dept Agr Biol, Ft Collins, CO 80523 USA 4.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Wang, Jie,Fu, Gao-Fei,Tembrock, Luke R.,et al. Mutational meltdown or controlled chain reaction: The dynamics of rapid plastome evolution in the hyperdiversity of Poaceae[J]. JOURNAL OF SYSTEMATICS AND EVOLUTION,2023,61(2):328-344.
APA	Wang, Jie,Fu, Gao-Fei,Tembrock, Luke R.,Liao, Xue-Zhu,Ge, Song,&Wu, Zhi-Qiang.(2023).Mutational meltdown or controlled chain reaction: The dynamics of rapid plastome evolution in the hyperdiversity of Poaceae.JOURNAL OF SYSTEMATICS AND EVOLUTION,61(2),328-344.
MLA	Wang, Jie,et al."Mutational meltdown or controlled chain reaction: The dynamics of rapid plastome evolution in the hyperdiversity of Poaceae".JOURNAL OF SYSTEMATICS AND EVOLUTION 61.2(2023):328-344.

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