Demographic history and population genetic structure of Hagenia abyssinica (Rosaceae), a tropical tree endemic to the Ethiopian highlands and eastern African mountains

doi:10.1007/s11295-017-1156-6

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	Demographic history and population genetic structure of Hagenia abyssinica (Rosaceae), a tropical tree endemic to the Ethiopian highlands and eastern African mountains
	Hu, Guang-Wan 1,3; Gichira, Andrew W.1,2,3; Li, Zhi-Zhong 1,2; Saina, Josphat K.1,2,3; Gituru, Robert W.3,4; Wang, Qing-Feng 1,3; Chen, Jin-Ming 1,3
刊名	TREE GENETICS & GENOMES
	2017-08-01
卷号	13 期号:4 页码:11
关键词	Afromontane forests Eastern Africa Genetic diversity Hagenia abyssinica Niche modeling Population structure
ISSN号	1614-2942
DOI	10.1007/s11295-017-1156-6
英文摘要	The distribution of genetic diversity among natural populations is significantly shaped by geographical and environmental heterogeneity. The key objectives of this study were to outline the population genetic structure and to investigate the effects of historical and current factors in shaping the population structure of an endemic tropical tree, Hagenia abyssinica. We used 11 polymorphic microsatellites to estimate genetic variability and evaluate gene flow among natural populations of H. abyssinica. Further, we employed ecological niche modeling approaches, to analyze the demographic history and map potential distributions of H. abyssinica during the Last Glacial Maximum and the present. Significant levels of genetic diversity (H-O = 0.477, H-E = 0.439) were observed among the sampled locations. High coefficient of genetic differentiation (F-ST = 0.32) and considerable genetic variation within the sampled locations (68.01%) were detected. Our results indicated the existence of three genetic groups with limited gene exchange and revealed positive correlations (r = 0.425, P < 0.05) between genetic diversity and geographic distance. The ecological niche modeling (ENM) results support the existence of three distribution zones during the Last Glacial Maximum (LGM), with high probability of occurrence (0.8-1.0), and indicated slight distribution disturbances during and after the LGM. The fundamental patterns of genetic diversity and population structuring of H. abyssinica result from a combination of both environmental and geographical factors, including long-term isolation by distance and characteristic life history of this species. Our ENM results identified three zones that could have served as glacial refugia for this species and lay a foundation for further studies, outlining demographic histories and population structures of Afromontane species.
资助项目	Sino-Africa Joint Research Center[Y323771W07] ; Sino-Africa Joint Research Center[SAJC201322]
WOS研究方向	Forestry ; Genetics & Heredity ; Agriculture
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000407640800002
内容类型	期刊论文
源URL	[http://202.127.146.157/handle/2RYDP1HH/1333]
专题	中国科学院武汉植物园
通讯作者	Wang, Qing-Feng; Chen, Jin-Ming
作者单位	1.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Hubei, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Sino Africa Joint Res Ctr, Wuhan, Hubei, Peoples R China 4.Jomo Kenyatta Univ Agr & Technol, Dept Bot, Nairobi 6200000200, Kenya
推荐引用方式 GB/T 7714	Hu, Guang-Wan,Gichira, Andrew W.,Li, Zhi-Zhong,et al. Demographic history and population genetic structure of Hagenia abyssinica (Rosaceae), a tropical tree endemic to the Ethiopian highlands and eastern African mountains[J]. TREE GENETICS & GENOMES,2017,13(4):11.
APA	Hu, Guang-Wan.,Gichira, Andrew W..,Li, Zhi-Zhong.,Saina, Josphat K..,Gituru, Robert W..,...&Chen, Jin-Ming.(2017).Demographic history and population genetic structure of Hagenia abyssinica (Rosaceae), a tropical tree endemic to the Ethiopian highlands and eastern African mountains.TREE GENETICS & GENOMES,13(4),11.
MLA	Hu, Guang-Wan,et al."Demographic history and population genetic structure of Hagenia abyssinica (Rosaceae), a tropical tree endemic to the Ethiopian highlands and eastern African mountains".TREE GENETICS & GENOMES 13.4(2017):11.