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Author Zhao D.S., Li Q.F., Zhang C.Q., Zhang C., Yang Q.Q., Pan L.X., Ren X.Y., Lu J., Gu M.H., Liu Q.Q.
Title gs9 acts as a transcriptional activator to regulate rice grain shape and appearance quality.
Abstract:
Identification of grain shape determining genes can facilitate breeding of rice cultivars with optimal grain shape and appearance quality. Here, we identify gs9 (grain shape Gene on Chromosome 9) gene by map-based cloning. The gs9 null mutant has slender grains, while overexpression gs9 results in round grains. gs9 encodes a protein without known conserved functional domain. It regulates grain shape by altering cell division. The interaction of gs9 and ovate family proteins OsOFP14 and OsOFP8 is modulated by OsGSK2 kinase, a key regulator of the brassinosteroids signaling pathway. Genetic interaction analysis reveals that gs9 functions independently from other previously identified grain size genes. Introducing the gs9 allele into elite rice cultivars significantly improves grain shape and appearance quality. It suggests potential application of gs9, alone or in combination with other grain size determining genes, in breeding of rice varieties with optimized grain shape.
Journal Nat Commun
Country China
Volume 9(1)
Pages 1240
Year 2018
PubMed ID 29588443
PubMed Central ID 5869696
DOI 10.1038/s41467-018-03616-y
URL -
Relation
Gene BIN2 CDC2-1 CDKB2;1 CYCB1;1 CYCB2;2 GS9 H1 MAD2 OFP10 OFP30
INSD -
Strain Wild Core Collection -
Induced Mutation Lines(NIG Collection) -
Sterile Seed Strain -
Lethal Embryo
Mutantion Strain
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Stages in Each Organ
- Muant Lines (Gene)
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Cultivated Varieties(NIG Collection) -
Stages in Each Organ -
/rice/oryzabase