Increased copy number of gibberellin 2-oxidase 8 genes reduced trailing growth and shoot length during soybean domestication.
Plant J
; 107(6): 1739-1755, 2021 09.
Article
em En
| MEDLINE
| ID: mdl-34245624
ABSTRACT
Copy number variations (CNVs) play important roles in crop domestication. However, there is only very limited information on the involvement of CNVs in soybean domestication. Trailing growth and long shoots are soybean adaptations for natural habitats but cause lodging that hampers yield in cultivation. Previous studies have focused on Dt1/2 affecting the indeterminate/determinate growth habit, whereas the possible role of the gibberellin pathway remained unclear. In the present study, quantitative trait locus (QTL) mapping of a recombinant inbred population of 460 lines revealed a trailing-growth-and-shoot-length QTL. A CNV region within this QTL was identified, featuring the apical bud-expressed gibberellin 2-oxidase 8A/B, the copy numbers of which were positively correlated with expression levels and negatively with trailing growth and shoot length, and their effects were demonstrated by transgenic soybean and Arabidopsis thaliana. Based on the fixation index, this CNV region underwent intense selection during the initial domestication process.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Glycine max
/
Brotos de Planta
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Proteínas de Soja
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Domesticação
/
Oxigenases de Função Mista
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
Plant J
Assunto da revista:
BIOLOGIA MOLECULAR
/
BOTANICA
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
China