Evolution of an Apomixis-Specific Allele Class in Supernumerary Chromatin of Apomictic Boechera.

ABSTRACT: Asexual reproduction through seeds in plants (i.e., apomixis) is a heritable trait, and apomixis- linked loci have been identified in multiple species. However, direct identification of genomic elements is typically hindered as apomixis-linked loci and are commonly found in recombination-suppressed and repetitive regions. Heterochromatinized elements, such as B chromosomes and other supernumerary chromosomal DNA fragments have long been known to be associated with asexuality in both plants and animals and are prime candidate regions for the evolution of multiple apomixis factors controlling the individual elements of apomixis. Here, we examined molecular evolution, gene regulation, and chromosomal location of a male apomeiosis factor (UPG2), a long noncoding RNA gene, in sexual and

SUBMITTER: Mau M 

PROVIDER: S-EPMC9198585 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature