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Vietnamese chickens: a gate towards Asian genetic diversity

Berthouly Cécile, Rognon Xavier, Nhu Van Thu, Gély Marie, Vu Chi Cuong, Tixier-Boichard M., Bed'Hom Bertrand, Bruneau N., Verrier Etienne, Maillard Jean-Charles, Michaux J.R.. 2010. Vietnamese chickens: a gate towards Asian genetic diversity. BMC Genetics, 11:53, 11 p.

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Quartile : Q3, Sujet : GENETICS & HEREDITY

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Anthropologie-Ethnologie

Abstract : Background: Chickens represent an important animal genetic resource and the conservation of local breeds is an issue for the preservation of this resource. The genetic diversity of a breed is mainly evaluated through its nuclear diversity. However, nuclear genetic diversity does not provide the same information as mitochondrial genetic diversity. For the species Gallus gallus, at least 8 maternal lineages have been identified. While breeds distributed westward from the Indian subcontinent usually share haplotypes from 1 to 2 haplogroups, Southeast Asian breeds exhibit all the haplogroups. The Vietnamese Ha Giang (HG) chicken has been shown to exhibit a very high nuclear diversity but also important rates of admixture with wild relatives. Its geographical position, within one of the chicken domestication centres ranging from Thailand to the Chinese Yunnan province, increases the probability of observing a very high genetic diversity for maternal lineages, and in a way, improving our understanding of the chicken domestication process. Results: A total of 106 sequences from Vietnamese HG chickens were first compared to the sequences of published Chinese breeds. The 25 haplotypes observed in the Vietnamese HG population belonged to six previously published haplogroups which are: A, B, C, D, F and G. On average, breeds from the Chinese Yunnan province carried haplotypes from 4.3 haplogroups. For the HG population, haplogroup diversity is found at both the province and the village level (0.69). The AMOVA results show that genetic diversity occurred within the breeds rather than between breeds or provinces. Regarding the global structure of the mtDNA diversity per population, a characteristic of the HG population was the occurrence of similar pattern distribution as compared to G. gallus spadiceus. However, there was no geographical evidence of gene flow between wild and domestic populations as observed when microsatellites were used. Conclusions: In contrast to other chicken populations, the HG chicken population showed very high genetic diversity at both the nuclear and mitochondrial levels. Due to its past and recent history, this population accumulates a specific and rich gene pool highlighting its interest and the need for conservation. (Résumé d'auteur)

Mots-clés Agrovoc : Poulet, Variation génétique

Mots-clés géographiques Agrovoc : Viet Nam, Asie du Sud-Est

Classification Agris : L10 - Animal genetics and breeding
L60 - Animal taxonomy and geography

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

Auteurs et affiliations

  • Berthouly Cécile, CIRAD-ES-UPR AGIRs (FRA)
  • Rognon Xavier, AgroParisTech (FRA)
  • Nhu Van Thu, NIAH (VNM)
  • Gély Marie, CIRAD-ES-UPR AGIRs (FRA)
  • Vu Chi Cuong, NIAH (VNM)
  • Tixier-Boichard M., INRA (FRA)
  • Bed'Hom Bertrand, INRA (FRA)
  • Bruneau N., INRA (FRA)
  • Verrier Etienne, INRA (FRA)
  • Maillard Jean-Charles, CIRAD-DRS-DREI (VNM)
  • Michaux J.R., Université de Liège (BEL)

Autres liens de la publication

Source : Cirad - Agritrop (https://agritrop.cirad.fr/556485/)

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