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Author Si L., Chen J., Huang X., Gong H., Luo J., Hou Q., Zhou T., Lu T., Zhu J., Shangguan Y., Chen E., Gong C., Zhao Q., Jing Y., Zhao Y., Li Y., Cui L., Fan D., Lu Y., Weng Q., Wang Y., Zhan Q., Liu K., Wei X., An K., An G., Han B.
Title OsSPL13 controls grain size in cultivated rice.
Abstract:
Although genetic diversity has a cardinal role in domestication, abundant natural allelic variations across the rice genome that cause agronomically important differences between diverse varieties have not been fully explored. Here we implement an approach integrating genome-wide association testing with functional analysis on grain size in a diverse rice population. We report that a major quantitative trait locus, GLW7, encoding the plant-specific transcription factor OsSPL13, positively regulates cell size in the grain hull, resulting in enhanced rice grain length and yield. We determine that a tandem-repeat sequence in the 5' UTR of OsSPL13 alters its expression by affecting transcription and translation and that high expression of OsSPL13 is associated with large grains in tropical japonica rice. Further analysis indicates that the large-grain allele of GLW7 in tropical japonica rice was introgressed from indica varieties under artificial selection. Our study demonstrates that new genes can be effectively identified on the basis of genome-wide association data.
Journal Nat. Genet.
Country China
Volume 48(4)
Pages 447-56
Year 2016
PubMed ID 26950093
PubMed Central ID -
DOI 10.1038/ng.3518
URL -
Relation
Gene GLW7 LK3 TID1
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