干旱区生态环境知识资源中心(Arid): Genetic erosion in domesticated barley and a hypothesis of a North African centre of diversity

Arid

DOI	10.1002/ece3.70068
	Genetic erosion in domesticated barley and a hypothesis of a North African centre of diversity
	Civan, Peter; Fricano, Agostino; Russell, Joanne; Pont, Caroline; Ozkan, Hakan; Kilian, Benjamin; Brown, Terence A.
通讯作者	Civáñ, P
来源期刊	ECOLOGY AND EVOLUTION
ISSN	2045-7758
出版年	2024
卷号	14 期号:8
英文摘要	Barley is one of the founder crops of the Neolithic transition in West Asia. While recent advances in genomics have provided a rather detailed picture of barley domestication, there are contradictory views on how the domestication process affected genetic diversity. We set out to revisit this question by integrating public DNA sequencing data from ancient barley and wide collections of extant wild and domesticated accessions. Using two previously overlooked approaches - analyses of chloroplast genomes and genome-wide proportions of private variants - we found that the barley cultivated six millennia ago was genetically unique and more diverse when compared to extant landraces and cultivars. Moreover, the chloroplast genomes revealed a link between the ancient barley, an obscure wild genotype from north-eastern Libya, and a distinct population of barley cultivated in Ethiopia/Eritrea. Based on these results, we hypothesize past existence of a wider North African population that included both wild and cultivated types and suffered from genetic erosion in the past six millennia, likely due to a rapid desertification that ended the Holocene African humid period. Besides providing clues about the origin of Ethiopian landraces, the hypothesis explains the post-domestication loss of diversity observed in barley. Analyses of additional samples will be necessary to resolve the history of African barley and its contribution to the extant cultivated gene pool.
英文关键词	ancient DNA domestication bottleneck genomics Hordeum phylogeography
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001285267500001
WOS关键词	POPULATION-STRUCTURE ; HISTORY ; GENOME ; SET ; CHROMOSOME ; BOTTLENECK ; EVOLUTION ; PATTERNS ; ORIGIN ; TOOL
WOS类目	Ecology ; Evolutionary Biology
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403465
推荐引用方式 GB/T 7714	Civan, Peter,Fricano, Agostino,Russell, Joanne,et al. Genetic erosion in domesticated barley and a hypothesis of a North African centre of diversity[J],2024,14(8).
APA	Civan, Peter.,Fricano, Agostino.,Russell, Joanne.,Pont, Caroline.,Ozkan, Hakan.,...&Brown, Terence A..(2024).Genetic erosion in domesticated barley and a hypothesis of a North African centre of diversity.ECOLOGY AND EVOLUTION,14(8).
MLA	Civan, Peter,et al."Genetic erosion in domesticated barley and a hypothesis of a North African centre of diversity".ECOLOGY AND EVOLUTION 14.8(2024).