In:
Frontiers in Plant Science, Frontiers Media SA, Vol. 13 ( 2022-3-4)
Abstract:
Salt stress is a major factor limiting the growth and yield of soybean ( Glycine max ). Wild soybeans ( Glycine soja ) contain high allelic diversity and beneficial alleles that can be re-introduced into domesticated soybeans to improve adaption to the environment. However, very few beneficial alleles have been identified from wild soybean. Here, we demonstrate that wild soybean is more salt tolerant than cultivated soybean and examine dehydration responsive element-binding (DREB) family transcription factor genes to look for advantageous alleles that might improve drought tolerance in cultivated soybean. Our genome-wide analysis identified 103 DREB genes from the Glycine max genome. By combined RNA-sequencing and population genetics of wild, landrace, and cultivated soybean accessions, we show that the natural variation in DREB3a and DREB3b is related to differences in salt tolerance in soybean accessions. Interestingly, DREB3b , but not DREB3a , appears to have undergone artificial selection. Soybean plants carrying the wild soybean DREB3b allele ( DREB3b 39Del ) are more salt tolerant than those containing the reference genome allele ( DREB3b Ref ). Together, our results suggest that the loss of the DREB3b 39Del allele through domestication of cultivated soybean may be associated with a reduction in salt tolerance. Our findings provide crucial information for improving salt tolerance in soybean through molecular breeding.
Type of Medium:
Online Resource
ISSN:
1664-462X
DOI:
10.3389/fpls.2022.821647
DOI:
10.3389/fpls.2022.821647.s001
DOI:
10.3389/fpls.2022.821647.s002
DOI:
10.3389/fpls.2022.821647.s003
DOI:
10.3389/fpls.2022.821647.s004
DOI:
10.3389/fpls.2022.821647.s005
DOI:
10.3389/fpls.2022.821647.s006
DOI:
10.3389/fpls.2022.821647.s007
DOI:
10.3389/fpls.2022.821647.s008
DOI:
10.3389/fpls.2022.821647.s009
DOI:
10.3389/fpls.2022.821647.s010
DOI:
10.3389/fpls.2022.821647.s011
DOI:
10.3389/fpls.2022.821647.s012
DOI:
10.3389/fpls.2022.821647.s013
DOI:
10.3389/fpls.2022.821647.s014
DOI:
10.3389/fpls.2022.821647.s015
DOI:
10.3389/fpls.2022.821647.s016
DOI:
10.3389/fpls.2022.821647.s017
Language:
Unknown
Publisher:
Frontiers Media SA
Publication Date:
2022
detail.hit.zdb_id:
2687947-5
detail.hit.zdb_id:
2613694-6
Permalink