ISSN:
1617-4623
Keywords:
Brassica
;
Self-incompatibility
;
Self-compatibility
;
S-locus glycoprotein
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
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, SLG WS1, displayed highest homology to class I SLG alleles, whereas the other, SLG WS2, 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 homoeologous S-loci. The occurrence of normally expressed SLG genes and its relevance to the self-compatible phenotype of B. napus is discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00391015
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