Population phylogenomic analysis of mitochondrial DNA in wild boars and domestic pigs revealed multiple domestication events in East AsiaReport as inadecuate




Population phylogenomic analysis of mitochondrial DNA in wild boars and domestic pigs revealed multiple domestication events in East Asia - Download this document for free, or read online. Document in PDF available to download.

Genome Biology

, 8:R245

First Online: 19 November 2007Received: 08 November 2006Revised: 08 February 2007Accepted: 19 November 2007

Abstract

BackgroundPreviously reported evidence indicates that pigs were independently domesticated in multiple places throughout the world. However, a detailed picture of the origin and dispersal of domestic pigs in East Asia has not yet been reported.

ResultsPopulation phylogenomic analysis was conducted in domestic pigs and wild boars by screening the haplogroup-specific mutation motifs inferred from a phylogenetic tree of pig complete mitochondrial DNA mtDNA sequences. All domestic pigs are clustered into single clade D which contains subclades D1, D2, D3, and D4, with wild boars from East Asia being interspersed. Three haplogroups within D1 are dominant in the Mekong region D1a2 and D1b and the middle and downstream regions of the Yangtze River D1a1a, and may represent independent founders of domestic pigs. None of the domestic pig samples from North East Asia, the Yellow River region, and the upstream region of the Yangtze River share the same haplogroup status with the local wild boars. The limited regional distributions of haplogroups D1 including its subhaplogroups, D2, D3, and D4 in domestic pigs suggest at least two different in situ domestication events.

ConclusionThe use of fine-grained mtDNA phylogenomic analysis of wild boars and domestic pigs is a powerful tool with which to discern the origin of domestic pigs. Our findings show that pig domestication in East Asia mainly occurred in the Mekong region and the middle and downstream regions of the Yangtze River.

Abbreviationsbpbase pair

Cytcytochrome

DRYRdownstream region of the Yellow River

MDYZmiddle and downstream region of the Yangtze River

mtDNAmitochondrial DNA

NEANorth East Asia

NJneighbor-joining

PAUPPhylogenetic Analysis Using Parsimony

PCRpolymerase chain reaction

SCSouth China

UMYRupstream and middle region of the Yellow River

URYZupstream region of the Yangtze River.

Electronic supplementary materialThe online version of this article doi:10.1186-gb-2007-8-11-r245 contains supplementary material, which is available to authorized users.

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Author: Gui-Sheng Wu - Yong-Gang Yao - Kai-Xing Qu - Zhao-Li Ding - Hui Li - Malliya G Palanichamy - Zi-Yuan Duan - Ning Li - Yao

Source: https://link.springer.com/







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