Molecular and genetic analyses of four nonfunctional S haplotype variants derived from a common ancestral S haplotype identified in sour cherry (Prunus cerasus L.).

ABSTRACT: Tetraploid sour cherry (Prunus cerasus) has an S-RNase-based gametophytic self-incompatibility (GSI) system; however, individuals can be either self-incompatible (SI) or self-compatible (SC). Unlike the situation in the Solanaceae, where self-compatibility accompanying polyploidization is often due to the compatibility of heteroallelic pollen, the genotype-dependent loss of SI in sour cherry is due to the compatibility of pollen containing two nonfunctional S haplotypes. Sour cherry individuals with the S(4)S(6)S(36a)S(36b) genotype are predicted to be SC, as only pollen containing both nonfunctional S(36a) and S(36b) haplotypes would be SC. However, we previously found that individuals of this genotype were SI. Here we describe four nonfunctional S(36) variants. Our molecular analyses ide

SUBMITTER: Tsukamoto T 

PROVIDER: S-EPMC2828722 | biostudies-literature | 2010 Feb

REPOSITORIES: biostudies-literature