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DOI	10.1016/j.pld.2023.08.003
	Enhanced and asymmetric signatures of hybridization at climatic margins: Evidence from closely related dioecious fig species
	Huang, Jian-Feng; Darwell, Clive T.; Peng, Yan-Qiong
发表日期	2024
ISSN	2096-2703
EISSN	2468-2659
起始页码	46
结束页码	2
卷号	46 期号:2
英文摘要	Hybridization plays a significant role in biological evolution. However, it is not clear whether ecological contingency differentially influences likelihood of hybridization, particularly at ecological margins where parental species may exhibit reduced fitnesses. Moreover, it is unknown whether future ecosystem change will increase the prevalence of hybridization. Ficus heterostyla and F. squamosa are closely related species co -distributed from southern Thailand to southwest China where hybridization, yielding viable seeds, has been documented. As a robust test of ecological factors driving hybridization, we investigated spatial hybridization signatures based on nuclear microsatellites from extensive population sampling across a widespread contact range. Both species showed high population differentiation and strong patterns of isolation by distance. Admixture estimates exposed asymmetric interspecific gene flow. Signatures of hybridization increase significantly towards higher latitude zones, peaking at the northern climatic margins. Geographic variation in reproductive phenology combined with ecologically challenging marginal habitats may promote this phenomenon. Our work is a first systematic evaluation of such patterns in a comprehensive, latitudinally -based clinal context, and indicates that tendency to hybridize appears strongly influenced by environmental conditions. Moreover, that future climate change scenarios will likely alter and possibly augment cases of hybridization at ecosystem scales. Copyright (c) 2023 Kunming Institute of Botany, Chinese Academy of Sciences. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co., Ltd. This is an open access article under the CC BYNC -ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
英文关键词	Hybridization; Heterospecific visitation; Fig; Pollinator wasp; Asymmetric gene flow
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:001225664700001
来源期刊	PLANT DIVERSITY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/299209
作者单位	Chinese Academy of Sciences; Xishuangbanna Tropical Botanical Garden, CAS; National Science & Technology Development Agency - Thailand; National Center Genetic Engineering & Biotechnology (BIOTEC)
推荐引用方式 GB/T 7714	Huang, Jian-Feng,Darwell, Clive T.,Peng, Yan-Qiong. Enhanced and asymmetric signatures of hybridization at climatic margins: Evidence from closely related dioecious fig species[J],2024,46(2).
APA	Huang, Jian-Feng,Darwell, Clive T.,&Peng, Yan-Qiong.(2024).Enhanced and asymmetric signatures of hybridization at climatic margins: Evidence from closely related dioecious fig species.PLANT DIVERSITY,46(2).
MLA	Huang, Jian-Feng,et al."Enhanced and asymmetric signatures of hybridization at climatic margins: Evidence from closely related dioecious fig species".PLANT DIVERSITY 46.2(2024).