Self-compatibility in Brassica napus is caused by independent mutations in S-locus genes
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چکیده
منابع مشابه
Independent S-Locus Mutations Caused Self-Fertility in Arabidopsis thaliana
A common yet poorly understood evolutionary transition among flowering plants is a switch from outbreeding to an inbreeding mode of mating. The model plant Arabidopsis thaliana evolved to an inbreeding state through the loss of self-incompatibility, a pollen-rejection system in which pollen recognition by the stigma is determined by tightly linked and co-evolving alleles of the S-locus receptor...
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Loss of pollen-S function in Prunus self-compatible cultivars has been mostly associated with deletions or insertions in the S-haplotype-specific F-box (SFB) genes. However, self-compatible pollen-part mutants defective for non-S-locus factors have also been found, for instance, in the apricot (Prunus armeniaca) cv. 'Canino'. In the present study, we report the genetic and molecular analysis of...
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Identifying the molecular basis of phenotypes that have evolved independently can provide insight into the ways genetic and developmental constraints influence the maintenance of phenotypic diversity. Melanic (darkly pigmented) phenotypes in mammals provide a potent system in which to study the genetic basis of naturally occurring mutant phenotypes because melanism occurs in many mammals, and t...
متن کاملStructural and transcriptional comparative analysis of the S locus regions in two self-incompatible Brassica napus lines.
Self-incompatibility (SI) in Brassica is controlled by a single locus, termed the S locus. There is evidence that two of the S locus genes, SLG, which encodes a secreted glycoprotein, and SRK, which encodes a putative receptor kinase, are required for SI on the stigma side. The current model postulates that a pollen ligand recognizing the SLG/SRK receptors is encoded in the genomic region defin...
متن کاملDevelopment of a molecular CAPS marker for the self-incompatibility locus in Brassica napus and identification of different S alleles
Using primers annealing to S locus sequences the cleaved amplified polymorphic sequences (CAPS) method was applied to develop a marker and to characterize different alleles at the self-incompatibility locus in Brassica napus. A segregating F2 population from a cross of a self-incompatible (SI) and a self-compatible parent, as well as seven SI lines representing four different S alleles were use...
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ژورنال
عنوان ژورنال: The Plant Journal
سال: 2007
ISSN: 0960-7412
DOI: 10.1111/j.1365-313x.2007.03058.x