Artificial selection of mutations in two nearby genes gave rise to shattering resistance in soybean
Resistance to pod shattering is a key domestication-related trait selected for seed production in many crops. Here, we show that the transition from shattering in wild soybeans to shattering resistance in cultivated soybeans resulted from selection of mutations within the coding sequences of two nea...
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Veröffentlicht in: | Nature communications 2024-08, Vol.15 (1), p.7588-12, Article 7588 |
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Sprache: | eng |
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Zusammenfassung: | Resistance to pod shattering is a key domestication-related trait selected for seed production in many crops. Here, we show that the transition from shattering in wild soybeans to shattering resistance in cultivated soybeans resulted from selection of mutations within the coding sequences of two nearby genes -
Sh1
and
Pdh1. Sh1
encodes a C2H2-like zinc finger transcription factor that promotes shattering by repressing
SHAT1-5
expression, thereby reducing the secondary wall thickness of fiber cap cells in the abscission layers of pod sutures, while
Pdh1
encodes a dirigent protein that orchestrates asymmetric lignin distribution in inner sclerenchyma, creating torsion in pod walls that facilitates shattering. Integration analyses of quantitative trait locus mapping, genome-wide association studies, and allele distribution in representative soybean germplasm suggest that these two genes are primary modulators underlying this domestication trait. Our study thus provides comprehensive understanding regarding the genetic, molecular, and cellular bases of shattering resistance in soybeans.
Resistance to pod shattering in crops is typically modulated by major loci each underpinned by a single gene. Here, the authors show that the transition from shattering in wild soybean to shattering resistance in cultivated soybean is underlain by selection of mutations within two neighboring genes. |
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ISSN: | 2041-1723 2041-1723 |
DOI: | 10.1038/s41467-024-52044-8 |