Evolutionary genomics and natural variation of Arabidopsis relatives
会议名称：《从植物科学到农业发展——2012全国植物生物学大会》
会议日期：2012年
关 键 词：Arabidopsis relatives Evolutionary genomics Natural variation S locus
摘 要：Arabidopsis relatives is a good model system for the study of genomics and natural *** S locus is a single polymorphic locus,which is responsible for self-incompatibility(SI) in the Brassicaceae *** its importance,our knowledge of S-locus evolution is largely restricted to the causal genes encoding the SRK receptor and SCR ligand of the SI *** present high-quality sequences of the genomic region of six S-locus haplotypes from Arabidopsis thaliana,Arabidopsis lyrata,and Capsella rubella. We found that duplication,gene conversion,and positive selection have been important factors in the evolution of these two genes,and appear to contribute to the generation of new recognition *** is an inbreeding annual forb closely related to Arabidopsis *** and rare FRI mutations along with rare FLC mutations explain a large fraction of flowering time variation in *** document flowering time under different conditions in 20 *** accessions from across the species’ range, and did not find any obvious loss-of-function FRI *** mapping-by-sequencing with two strains that have contrasting flowering behaviors,we identified a splice-site mutation in FLC as the likely cause of early flowering in accession 1408.