Journal
NATURE GENETICS
Volume 43, Issue 12, Pages 1266-+Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/ng.977
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Funding
- National 863 Project
- National Program on the Development of Basic Research
- National Program on RAMP
- D of Transgenic Plants
- National Natural Science Foundation of China
- Bill AMP
- Melinda Gates Foundation
- National 863 Project
- National Program on the Development of Basic Research
- National Program on RAMP
- D of Transgenic Plants
- National Natural Science Foundation of China
- Bill AMP
- Melinda Gates Foundation
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Increasing crop yield is one of the most important goals of plant science research. Grain size is a major determinant of grain yield in cereals and is a target trait for both domestication and artificial breeding(1). We showed that the quantitative trait locus (QTL) GS5 in rice controls grain size by regulating grain width, filling and weight. GS5 encodes a putative serine carboxypeptidase and functions as a positive regulator of grain size, such that higher expression of GS5 is correlated with larger grain size. Sequencing of the promoter region in 51 rice accessions from a wide geographic range identified three haplotypes that seem to be associated with grain width. The results suggest that natural variation in GS5 contributes to grain size diversity in rice and may be useful in improving yield in rice and, potentially, other crops(2).
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