Genetic control and geo-climate adaptation of pod dehiscence provide novel insights into soybean domestication.

Reference Report for AP20210706.5

Title:	Genetic control and geo-climate adaptation of pod dehiscence provide novel insights into soybean domestication.
Authors:	Zhang, J., Singh, A.K,
Source:	Zhang et al. 2020 G3, 10(2):545-554
Abstract:	Loss of pod dehiscence was a key step in soybean [Glycine max(L.) Merr.] domestication. Genome-wide association analysis for soybean shattering identified loci harboringPdh1,NST1AandSHAT1-5. Pairwise epistatic interactions were observed, and the dehiscentPdh1overcomes resistance conferred byNST1AorSHAT1-5locus. Further candidate gene association analysis identified a nonsense mutation inNST1Aassociated with pod dehiscence. Geographic analysis showed that in Northeast China (NEC), indehiscence at bothPdh1 and NST1Awere required in cultivated soybean, while indehiscentPdh1alone is capable of preventing shattering in Huang-Huai-Hai (HHH) valleys. IndehiscentPdh1allele was only identified in wild soybean (Glycine sojaL.) accession from HHH valleys suggesting that it may have originated in this region. No specific indehiscence was required in Southern China. Geo-climatic investigation revealed strong correlation between relative humidity and frequency of indehiscentPdh1across China. This study demonstrates that epistatic interaction betweenPdh1andNST1Afulfills a pivotal role in determining the level of resistance against pod dehiscence, and humidity shapes the distribution of indehiscent alleles. Our results give further evidence to the hypothesis that HHH valleys was at least one of the origin centers of cultivated soybean.

Funded by the USDA-ARS. Developed by the USDA-ARS SoyBase and Legume Clade Database group at the Iowa State University, Ames, IA

U.S. Public Domain