Development, characterization and cross-species amplification of mungbean (Vigna radiata) genic microsatellite markers

In this paper, we report the development and characterization of genic microsatellite markers for mungbean by mining sequence database, and transferability of the markers to Asian Vigna species. A total of 157 markers were designed upon searching for SSR in 830 transcript sequences. Thirty-three loci revealed single copy polymorphism in a panel of 17 mungbean accessions with number of alleles ranging from 2 to 8, and observed heterozygosity from 0 to 0.3125. Seven loci deviated from Hardy-Weinberg Equilibrium. Two pairwise combinations of allele frequencies implied linkage disequilibrium. Cross-species amplification in 19 taxa of Asian Vigna using 85 primers showed that amplification rates varied between 80% (V. aconitifolia) to 95.3% (V. reflexo-pilosa). These mungbean genic microsatellite markers will be useful to study genetic resource and conservation of Asian Vigna species.