May participate in meiotic recombination, specifically in homologous strand assimilation, which is required for the resolution of meiotic double-strand breaks (PubMed:10488231, PubMed:23300481). Mediates interhomolog recombination during meiosis (PubMed:17785529). Double stacked ring-shaped homooctamer (By similarity). Interacts with BRCA2A and BRCA2B (PubMed:16415210). Expressed in mitotic and/or meiotic tissues. Expressed in roots, leaves and anthers and carpels of young fower buds. Cell cycle regulated, peaking at the S phase. It is also expressed at high levels in exponentially growing cells in suspension cultures. Strongly reduced fertility and seed numbers due to defects in male and female gametogenesis. Belongs to the RecA family. DMC1 subfamily.