High inbreeding, limited recombination and divergent evolutionary patterns between two sympatric morel species in China

doi:10.1038/srep22434

	High inbreeding, limited recombination and divergent evolutionary patterns between two sympatric morel species in China
	Du, Xi-Hui 1; Zhao, Qi1 ; Xu, Jianping 2; Yang, Zhu L.1
	2016-03-01
发表期刊	SCIENTIFIC REPORTS
卷号	6
摘要	As highly prized, popular mushrooms, morels are widely distributed in the northern hemisphere, with China as a modern centre of speciation and diversity. Overharvesting of morels has caused concern over how to effectively preserve their biological and genetic diversity. However, little is known about their population biology and life cycle. In this study, we selected two sympatric phylogenetic species, Mel-13 (124 collections from 11 geographical locations) and Morchella eohespera (156 collections from 14 geographical locations), using fragments of 4 DNA sequences, to analyse their genetic structure. Our results indicated significant differentiation among geographic locations in both species, whereas no obvious correlation between genetic and geographic distance was identified in either species. M. eohespera exhibited a predominantly clonal population structure with limited recombination detected in only 1 of the 14 geographic locations. In contrast, relatively frequent recombination was identified in 6 of the 11 geographic locations of Mel-13. Our analysis indicated that the sympatric species Mel-13 and M. eohespera might have divergent evolutionary patterns, with the former showing signatures of recent population expansion and the latter being relatively stable. Interestingly, we found no heterozygosity but strong evidence for genealogical incongruence, indicating a high level of inbreeding and hybridisation among morel species.
DOI	10.1038/srep22434
收录类别	SCI
语种	英语
WOS记录号	WOS:000371056800001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/25991
专题	中国科学院东亚植物多样性与生物地理学重点实验室
作者单位	1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China 2.McMaster Univ, Dept Biol, 1280 Main St W, Hamilton, ON L8S 4K1, Canada
推荐引用方式 GB/T 7714	Du, Xi-Hui,Zhao, Qi,Xu, Jianping,et al. High inbreeding, limited recombination and divergent evolutionary patterns between two sympatric morel species in China[J]. SCIENTIFIC REPORTS,2016,6.
APA	Du, Xi-Hui,Zhao, Qi,Xu, Jianping,&Yang, Zhu L..(2016).High inbreeding, limited recombination and divergent evolutionary patterns between two sympatric morel species in China.SCIENTIFIC REPORTS,6.
MLA	Du, Xi-Hui,et al."High inbreeding, limited recombination and divergent evolutionary patterns between two sympatric morel species in China".SCIENTIFIC REPORTS 6(2016).

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