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- Title
Morpho-physiological and genetic characteristics of a salt-tolerant mutant line in soybean (Glycine max L.)
- Authors
Moon, Chang Yeok; Kang, Byeong Hee; Kim, Woon Ji; Chowdhury, Sreeparna; Kang, Sehee; Lee, Jeong-Dong; Kwon, Soon-Jae; Kim, Han-Yong; Lee, Hyeon-Seok; Ha, Bo-Keun
- Abstract
Key message: One major quantitative trait loci and candidate gene for salt tolerance were identified on chromosome 3 from a new soybean mutant derived from gamma-ray irradiation, which will provide a new genetic resource for improving soybean salt tolerance. Soil salinity is a worldwide problem that reduces crop yields, but the development of salt-tolerant crops can help overcome this challenge. This study was conducted with the purpose of evaluating the morpho-physiological and genetic characteristics of a new salt-tolerant mutant KA-1285 developed using gamma-ray irradiation in soybean (Glycine max L.). The morphological and physiological responses of KA-1285 were compared with salt-sensitive and salt-tolerant genotypes after treatment with 150 mM NaCl for two weeks. In addition, a major salt tolerance quantitative trait locus (QTL) was identified on chromosome 3 in this study using the Daepung X KA-1285 169 F2:3 population, and a specific deletion was identified in Glyma03g171600 (Wm82.a2.v1) near the QTL region based on re-sequencing analysis. A kompetitive allele-specific PCR (KASP) marker was developed based on the deletion of Glyma03g171600 which distinguished the wild-type and mutant alleles. Through the analysis of gene expression patterns, it was confirmed that Glyma03g171700 (Wm82.a2.v1) is a major gene that controls salt tolerance functions in Glyma03g32900 (Wm82.a1.v1). These results suggest that the gamma-ray-induced mutant KA-1285 has the potential to be employed for the development of a salt-tolerant cultivar and provide useful information for genetic research related to salt tolerance in soybeans.
- Publication
Theoretical & Applied Genetics, 2023, Vol 136, Issue 7, p1
- ISSN
0040-5752
- Publication type
Article
- DOI
10.1007/s00122-023-04408-9