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Identification of a gene linked to the Brassica S (self-incompatibility) locus by differential display


, : Identification of a gene linked to the Brassica S (self-incompatibility) locus by differential display. Comptes Rendus de L'academie des Sciences. Serie Iii, Sciences de la Vie 322(12): 1051-1060

Self-incompatibility in Brassica is controlled by a complex locus, the S locus, that includes several expressed genes. Two S locus genes, SLG and SRK, are expressed in the stigma and have been implicated in self-pollen recognition. The male component of this recognition system is also predicted to be encoded by a gene at the S locus but this gene has not been identified to date. In this study, we have used differential display to screen for polymorphic, S-locus-linked genes that are expressed in anthers. This approach has allowed the identification of a gene, named S5J, which was shown to segregate completely with the S locus. We discuss the possible role of this gene in the self-incompatibility response and evaluate the utility of differential display for the identification of genes at specific genetic loci.

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PMID: 10656145


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