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The OsSPL16-GW7 regulatory module determines grain shape and simultaneously improves rice yield and grain quality
Shaokui Wang,Shan Li,Qian Liu,Kun Wu,Jianqing Zhang,Shuansuo Wang,Yi Wang,Xiangbin Chen,Yi Zhang,Caixia Gao,Feng Wang,Haixiang Huang & Xiangdong Fu
NATURE GENETICS
Abstract
The deployment of heterosis in the form of hybrid rice varieties has boosted grain yield, but grain quality improvement still remains a challenge. Here we show that a quantitative trait locus for rice grain quality, qGW7, reflects allelic variation of GW7, a gene encoding a TONNEAU1-recruiting motif protein with similarity to C-terminal motifs of the human centrosomal protein CAP350. Upregulation of GW7 expression was correlated with the production of more slender grains, as a result of increased cell division in the longitudinal direction and decreased cell division in the transverse direction. OsSPL16 (GW8), an SBP-domain transcription factor that regulates grain width, bound directly to the GW7 promoter and repressed its expression. The presence of a semidominantGW7TFA allele from tropical japonica rice was associated with higher grain quality without the yield penalty imposed by the Basmati gw8 allele. Manipulation of the OsSPL16-GW7module thus represents a new strategy to simultaneously improve rice yield and grain quality.
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论文编号: |
DOI:10.1038/ng.3352 |
论文题目: |
The OsSPL16-GW7 regulatory module determines grain shape and simultaneously improves rice yield and grain quality |
英文论文题目: |
The OsSPL16-GW7 regulatory module determines grain shape and simultaneously improves rice yield and grain quality |
第一作者: |
Shaokui Wang,Shan Li,Qian Liu,Kun Wu,Jianqing Zhang,Shuansuo Wang,Yi Wang,Xiangbin Chen,Yi Zhang,Caixia Gao,Feng Wang,Haixiang Huang & Xiangdong Fu |
英文第一作者: |
Shaokui Wang,Shan Li,Qian Liu,Kun Wu,Jianqing Zhang,Shuansuo Wang,Yi Wang,Xiangbin Chen,Yi Zhang,Caixia Gao,Feng Wang,Haixiang Huang & Xiangdong Fu |
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2015-07-07 |
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摘要: |
The deployment of heterosis in the form of hybrid rice varieties has boosted grain yield, but grain quality improvement still remains a challenge. Here we show that a quantitative trait locus for rice grain quality, qGW7, reflects allelic variation of GW7, a gene encoding a TONNEAU1-recruiting motif protein with similarity to C-terminal motifs of the human centrosomal protein CAP350. Upregulation of GW7 expression was correlated with the production of more slender grains, as a result of increased cell division in the longitudinal direction and decreased cell division in the transverse direction. OsSPL16 (GW8), an SBP-domain transcription factor that regulates grain width, bound directly to the GW7 promoter and repressed its expression. The presence of a semidominantGW7TFA allele from tropical japonica rice was associated with higher grain quality without the yield penalty imposed by the Basmati gw8 allele. Manipulation of the OsSPL16-GW7module thus represents a new strategy to simultaneously improve rice yield and grain quality. |
英文摘要: |
The deployment of heterosis in the form of hybrid rice varieties has boosted grain yield, but grain quality improvement still remains a challenge. Here we show that a quantitative trait locus for rice grain quality, qGW7, reflects allelic variation of GW7, a gene encoding a TONNEAU1-recruiting motif protein with similarity to C-terminal motifs of the human centrosomal protein CAP350. Upregulation of GW7 expression was correlated with the production of more slender grains, as a result of increased cell division in the longitudinal direction and decreased cell division in the transverse direction. OsSPL16 (GW8), an SBP-domain transcription factor that regulates grain width, bound directly to the GW7 promoter and repressed its expression. The presence of a semidominantGW7TFA allele from tropical japonica rice was associated with higher grain quality without the yield penalty imposed by the Basmati gw8 allele. Manipulation of the OsSPL16-GW7module thus represents a new strategy to simultaneously improve rice yield and grain quality. |
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NATURE GENETICS |
英文刊物名称: |
NATURE GENETICS |
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其它备注: |
Shaokui Wang,Shan Li,Qian Liu,Kun Wu,Jianqing Zhang,Shuansuo Wang,Yi Wang,Xiangbin Chen,Yi Zhang,Caixia Gao,Feng Wang,Haixiang Huang & Xiangdong Fu. The OsSPL16-GW7 regulatory module determines grain shape and simultaneously improves rice yield and grain quality. NATURE GENETICS. DOI:10.1038/ng.3352 |
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