Intrahaplotype Polymorphism at the Brassica S Locus - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Genetics Année : 2001

Intrahaplotype Polymorphism at the Brassica S Locus

Christine Miege
  • Fonction : Auteur
Véronique Ruffio-Châble
  • Fonction : Auteur
Mikkel H Schierup
  • Fonction : Auteur
Didier Cabrillac
  • Fonction : Auteur
Christian Dumas
  • Fonction : Auteur
Thierry Gaude
J. Mark Cock

Résumé

The S locus receptor kinase and the S locus glycoproteins are encoded by genes located at the S locus, which controls the self-incompatibility response in Brassica. In class II self-incompatibility haplotypes, S locus glycoproteins can be encoded by two different genes, SLGA and SLGB. In this study, we analyzed the sequences of these genes in several independently isolated plants, all of which carry the same S haplotype (S 2). Two groups of S 2 haplotypes could be distinguished depending on whether SRK was associated with SLGA or SLGB. Surprisingly, SRK alleles from the two groups could be distinguished at the sequence level, suggesting that recombination rarely occurs between haplotypes of the two groups. An analysis of the distribution of polymorphisms along the S domain of SRK showed that hypervariable domains I and II tend to be conserved within haplotypes but to be highly variable between haplotypes. This is consistent with these domains playing a role in the determination of haplotype specificity.
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Dates et versions

hal-01925589 , version 1 (23-01-2019)

Licence

Paternité - Pas d'utilisation commerciale

Identifiants

  • HAL Id : hal-01925589 , version 1
  • PUBMED : 11606555
  • WOS : 000171744900033

Citer

Christine Miege, Véronique Ruffio-Châble, Mikkel H Schierup, Didier Cabrillac, Christian Dumas, et al.. Intrahaplotype Polymorphism at the Brassica S Locus. Genetics, 2001, 159 (2), pp.811-822. ⟨hal-01925589⟩
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