The origin of allotetraploid Lepisorus inaequibasis (Polypodiaceae) and paternal bias in its morphology and abiotic niche

doi:10.1002/tax.12199

	The origin of allotetraploid Lepisorus inaequibasis (Polypodiaceae) and paternal bias in its morphology and abiotic niche
	Zhao, Cun-Feng ; Wei, Ran ; Xiang, Qiao-Ping ; Zhang, Xian-Chun
	2020
发表期刊	TAXON
ISSN	0040-0262
卷号	69 期号:1 页码:43-55
摘要	Lepisorus inaequibasis is thought to be of hybrid origin due to its leaf shape and sporangia being intermediate between those of its putative progenitors. Subsequent molecular studies have supported its hybrid origin, but its progenitors have not been determined. Here, we performed molecular phylogenetic analysis, flow cytometry (FCM), morphological character observation, and ecological niche modelling (ENM) to elucidate the origin of L. inaequibasis. The phylogenetic trees inferred from single-copy nuclear genes (pgiC and gapCp short) confirm the hybrid origin of L. inaequibasis from Lepisorus waltonii and Lepisorus jakonensis. Chloroplast DNA (cpDNA) phylogeny indicates that L. jakonensis is the maternal progenitor. All populations of L. inaequibasis share a single cpDNA haplotype identical to the lineage of L. jakonensis in the central Himalayas; thus, we hypothesize that L. inaequibasis originated in the central Himalaya region and dispersed to east Himalaya and Hengduan Mountain regions. Based on FCM, L. inaequibasis is tetraploid, while its progenitors are diploid. Principal component analysis of rhizome scales and observations of sporangial annuli indicated a high degree of morphological similarity between L. inaequibasis and its paternal progenitor species, L. waltonii. The ENM results showed that L. inaequibasis has a relatively high niche identity value with L. waltonii. Therefore, we conclude that L. inaequibasis is an allotetraploid that originated through hybridization between the diploid species L. waltonii and L. jakonensis. This allotetraploid species shows clear paternal bias in both its morphological characters and its ecological niche.
关键词	hybrid origin paternal preference polyploid reticulate evolution
学科领域	Plant Sciences ; Evolutionary Biology
DOI	10.1002/tax.12199
收录类别	SCI
语种	英语
WOS关键词	GENOME SIZE ; GENE-EXPRESSION ; HYBRIDIZATION ; POLYPLOIDY ; FREQUENCY ; DISTRIBUTIONS ; SPECIATION ; INFERENCE ; SOFTWARE ; COMPLEX
WOS研究方向	Plant Sciences ; Evolutionary Biology
WOS记录号	WOS:000522901900001
出版者	WILEY
文献子类	Article
出版地	HOBOKEN
EISSN	1996-8175
资助机构	National Natural Science Foundation of China (NSFC)National Natural Science Foundation of China (NSFC) [31370260, 31470317]
作者邮箱	qpxiang@ibcas.ac.cn ; zhangxc@ibcas.ac.cn
引用统计	被引频次：5[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/2S10CLM1/21833
专题	系统与进化植物学国家重点实验室
作者单位	1.[Zhao, Cun-Feng 2.Wei, Ran 3.Xiang, Qiao-Ping 4.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Cun-Feng,Wei, Ran,Xiang, Qiao-Ping,et al. The origin of allotetraploid Lepisorus inaequibasis (Polypodiaceae) and paternal bias in its morphology and abiotic niche[J]. TAXON,2020,69(1):43-55.
APA	Zhao, Cun-Feng,Wei, Ran,Xiang, Qiao-Ping,&Zhang, Xian-Chun.(2020).The origin of allotetraploid Lepisorus inaequibasis (Polypodiaceae) and paternal bias in its morphology and abiotic niche.TAXON,69(1),43-55.
MLA	Zhao, Cun-Feng,et al."The origin of allotetraploid Lepisorus inaequibasis (Polypodiaceae) and paternal bias in its morphology and abiotic niche".TAXON 69.1(2020):43-55.

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