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Title: Sequence and expression of endogenous S-locus glycoprotein genes in self-compatible Brassica napus. Author: Robert LS, Allard S, Franklin TM, Trick M. Journal: Mol Gen Genet; 1994 Jan; 242(2):209-16. PubMed ID: 8159172. Abstract: Brassica napus is an amphidiploid plant which is self-compatible even though it is derived from hybridisation of the self-incompatible species B. oleracea and B. campestris. Experiments were undertaken to establish if S-locus glycoprotein (SLG) genes exist in B. napus and whether these are expressed as in self-incompatible Brassica species. Two different stigma-specific cDNA sequences homologous to SLG genes were obtained from the B. napus cultivar Westar. One of these sequences, SLGWS1, displayed highest homology to class I SLG alleles, whereas the other, SLGWS2, showed greatest homology to class II SLG genes. Both were expressed at high levels in Westar stigmas following a developmental pattern typical of SLG genes in the self-incompatible diploids. We infer that they represent the endogenous SLG genes at the two homologous S-loci. The occurrence of normally expressed SLG genes and its relevance to the self-compatible phenotype of B. napus is discussed.[Abstract] [Full Text] [Related] [New Search]