Li-Juan Qiu
Chinese Academy of Agricultural Sciences, China
Title: Genomic variation of subgenus soja provides insights into domestication, evolution, diversity and domestic utilization of soybean
Biography
Biography: Li-Juan Qiu
Abstract
Although crop wild relatives are an important source of genetic diversity for agriculture, it is their gene repertoire which remains largely unexplored. Here we report the establishments and analysis of a pan-genome of Glycine soja; the wild progenitor species of cultivated soybean Glycine max, by de novo sequencing of seven representative accessions. Inter-genomic comparison identified lineage-specific genes and genes with copy number variations or large-effect mutations, some of which have undergone positive selection and may contribute to variation of key agronomic traits such as pathogen or pest resistance, seed composition, flowering time and maturity, biomass and organ size. Approximately 80% of the pan-genome was present in all seven accessions, while the rest was dispensable and exhibited greater adaptive selection than the core genome, perhaps reflective of their distinct roles in adaptation to diverse environment. This work will facilitate the harnessing of untapped genetic diversity from wild soybean for enhancement of elite cultivars.