Transcriptome sequencing data provide a solid base to understand the phylogenetic relationships, biogeography and reticulated evolution of the genus Zamia L. (Cycadales: Zamiaceae)

doi:10.1093/aob/mcae065

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	Transcriptome sequencing data provide a solid base to understand the phylogenetic relationships, biogeography and reticulated evolution of the genus Zamia L. (Cycadales: Zamiaceae)
	Lindstrom, Anders; Habib, Sadaf; Dong, Shanshan; Gong, Yiqing; Liu, Jian; Calonje, Michael; Stevenson, Dennis; Zhang, Shouzhou
	2024
发表期刊	ANNALS OF BOTANY
ISSN	0305-7364
卷号	134 期号:5 页码:747-768
摘要	Background and Aims Cycads are a key lineage to understand the early evolution of seed plants and their response to past environmental changes. However, tracing the evolutionary trajectory of cycad species is challenging when the robust relationships at inter- or infrageneric level are not well resolved.Methods Here, using 2901 single-copy nuclear genes, we explored the species relationships and gene flow within the second largest genus of cycads, i.e. Zamia, based on phylotranscriptomic analyses of 90 % extant Zamia species. Based on a well-resolved phylogenetic framework, we performed gene flow analyses, molecular dating and biogeographical reconstruction to examine the spatiotemporal evolution of Zamia. We also performed ancestral state reconstruction of a total of 62 traits of the genus to comprehensively investigate its morphological evolution.Key Results Zamia comprises seven major clades corresponding to seven distinct distribution areas in the Americas, with at least three reticulation nodes revealed in this genus. Extant lineages of Zamia initially diversified around 18.4-32.6 (29.14) million years ago in Mega-Mexico, and then expanded eastward into the Caribbean and southward into Central and South America. Ancestral state reconstruction revealed homoplasy in most of the morphological characters.Conclusions This study revealed congruent phylogenetic relationships from comparative methods/datasets, with some conflicts being the result of incomplete lineage sorting and ancient/recent hybridization events. The strong association between the clades and the biogeographic areas suggested that ancient dispersal events shaped the modern distribution pattern, and regional climatic factors may have resulted in the following in situ diversification. Climate cooling starting during the mid-Miocene is associated with the global expansion of Zamia to tropical South America that has dramatically driven lineage diversification in the New World flora, as well as the extinction of cycad species in the nowadays cooler regions of both hemispheres, as indicated by the fossil records.
DOI	10.1093/aob/mcae065
WOS记录号	WOS:001270855900001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/75966
专题	中国科学院昆明植物研究所
推荐引用方式 GB/T 7714	Lindstrom, Anders,Habib, Sadaf,Dong, Shanshan,et al. Transcriptome sequencing data provide a solid base to understand the phylogenetic relationships, biogeography and reticulated evolution of the genus Zamia L. (Cycadales: Zamiaceae)[J]. ANNALS OF BOTANY,2024,134(5):747-768.
APA	Lindstrom, Anders.,Habib, Sadaf.,Dong, Shanshan.,Gong, Yiqing.,Liu, Jian.,...&Zhang, Shouzhou.(2024).Transcriptome sequencing data provide a solid base to understand the phylogenetic relationships, biogeography and reticulated evolution of the genus Zamia L. (Cycadales: Zamiaceae).ANNALS OF BOTANY,134(5),747-768.
MLA	Lindstrom, Anders,et al."Transcriptome sequencing data provide a solid base to understand the phylogenetic relationships, biogeography and reticulated evolution of the genus Zamia L. (Cycadales: Zamiaceae)".ANNALS OF BOTANY 134.5(2024):747-768.

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