Genome-wide association study reveals that the cupin domain protein OsCDP3.10 regulates seed vigour in rice.
Plant Biotechnol J
; 20(3): 485-498, 2022 03.
Article
en En
| MEDLINE
| ID: mdl-34665915
Seed vigour is an imperative trait for the direct seeding of rice. In this study, we examined the genetic regulation of seedling percentage at the early germination using a genome-wide association study in rice. One major quantitative trait loci qSP3 for seedling percentage was identified, and the candidate gene was validated as qSP3, encoding a cupin domain protein OsCDP3.10 for the synthesis of 52 kDa globulin. Disruption of this gene in Oscdp3.10 mutants reduced the seed vigour, including the germination potential and seedling percentage, at the early germination in rice. The lacking accumulation of 52 kDa globulin was observed in the mature grains of the Oscdp3.10 mutants. The significantly lower amino acid contents were observed in the mature grains and the early germinating seeds of the Oscdp3.10 mutants compared with those of wild-type. Rice OsCDP3.10 regulated seed vigour mainly via modulating the amino acids e.g. Met, Glu, His, and Tyr that contribute to hydrogen peroxide (H2 O2 ) accumulation in the germinating seeds. These results provide important insights into the application of seed priming with the amino acids and the selection of OsCDP3.10 to improve seed vigour in rice.
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1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Oryza
Tipo de estudio:
Risk_factors_studies
Idioma:
En
Revista:
Plant Biotechnol J
Asunto de la revista:
BIOTECNOLOGIA
/
BOTANICA
Año:
2022
Tipo del documento:
Article
País de afiliación:
China