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Author Shin D., Lee S., Kim T.H., Lee J.H., Park J., Lee J., Lee J.Y., Cho L.H., Choi J.Y., Lee W., Park J.H., Lee D.W., Ito H., Kim D.H., Tanaka A., Cho J.H., Song Y.C., Hwang D., Purugganan M.D., Jeon J.S., An G., Nam H.G.
Title Natural variations at the Stay-Green gene promoter control lifespan and yield in rice cultivars.
Abstract:
Increased grain yield will be critical to meet the growing demand for food, and could be achieved by delaying crop senescence. Here, via quantitative trait locus (QTL) mapping, we uncover the genetic basis underlying distinct life cycles and senescence patterns of two rice subspecies, indica and japonica. Promoter variations in the Stay-Green (OsSGR) gene encoding the chlorophyll-degrading Mg++-dechelatase were found to trigger higher and earlier induction of OsSGR in indica, which accelerated senescence of indica rice cultivars. The indica-type promoter is present in a progenitor subspecies O. nivara and thus was acquired early during the evolution of rapid cycling trait in rice subspecies. Japonica OsSGR alleles introgressed into indica-type cultivars in Korean rice fields lead to delayed senescence, with increased grain yield and enhanced photosynthetic competence. Taken together, these data establish that naturally occurring OsSGR promoter and related lifespan variations can be exploited in breeding programs to augment rice yield.
Journal Nat Commun
Country South Korea
Volume 11(1)
Pages 2819
Year 2020
PubMed ID 32499482
PubMed Central ID 7272468
DOI 10.1038/s41467-020-16573-2
URL -
Relation
Gene SGR
INSD -
Strain Wild Core Collection -
Induced Mutation Lines(NIG Collection) -
Sterile Seed Strain -
Lethal Embryo
Mutantion Strain 		-
Stages in Each Organ
- Muant Lines (Gene) 		-
Cultivated Varieties(NIG Collection) -
Stages in Each Organ -
/rice/oryzabase