PNAS
Abstract
The contradiction between “high yielding” and “early maturing” hampers further improvement of annual rice yield. Here we report the positional cloning of a major maturity duration regulatory gene,Early flowering-completely dominant(Ef-cd), and demonstrate that natural variation inEf-cdcould be used to overcome the above contradictory. TheEf-cdlocus gives rise to a long noncoding RNA (lncRNA) antisense transcript overlapping theOsSOC1gene.Ef-cdlncRNA expression positively correlates with the expression ofOsSOC1and H3K36me3 deposition. Field test comparisons of early maturingEf-cdnear-isogenic lines with their wild types as well as of the derivative early maturing hybrids with their wild-type hybrids conducted under different latitudes determined that the early maturingEf-cdallele shortens maturity duration (ranging from 7 to 20 d) without a concomitant yield penalty.Ef-cdfacilitates nitrogen utilization and also improves the photosynthesis rate. Analysis of 1,439 elite hybrid rice varieties revealed that the 16 homozygotes and 299 heterozygotes possessingEf-cdmatured significantly earlier. Therefore,Ef-cdcould be a vital contributor of elite early maturing hybrid varieties in balancing grain yield with maturity duration.
| 论文编号: | DOI:10.1073/pnas.1815030116 |
| 论文题目: | Ef-cd Locus Shortens Rice Maturity Duration Without Yield Penalty |
| 英文论文题目: | Ef-cd Locus Shortens Rice Maturity Duration Without Yield Penalty |
| 第一作者: | Jun Fang, Fantao Zhang, Hongru Wang, Wei Wang, Fei Zhao, Zijuan Li, Changhui Sun, Faming Chen, Fan Xu, Shuoqi Chang, Liang Wu, Qingyun Bu, Pingrong Wang, Jiankun Xie, Fan Chen, Xuehui Huang, Yijing Zhang, Xinguang Zhu, Bin Han, Xiaojian Deng, and Chengcai Chu |
| 英文第一作者: | Jun Fang, Fantao Zhang, Hongru Wang, Wei Wang, Fei Zhao, Zijuan Li, Changhui Sun, Faming Chen, Fan Xu, Shuoqi Chang, Liang Wu, Qingyun Bu, Pingrong Wang, Jiankun Xie, Fan Chen, Xuehui Huang, Yijing Zhang, Xinguang Zhu, Bin Han, Xiaojian Deng, and Chengcai Chu |
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| 发表年度: | 2019-08-27 |
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| 摘要: | The contradiction between “high yielding” and “early maturing” hampers further improvement of annual rice yield. Here we report the positional cloning of a major maturity duration regulatory gene,Early flowering-completely dominant(Ef-cd), and demonstrate that natural variation inEf-cdcould be used to overcome the above contradictory. TheEf-cdlocus gives rise to a long noncoding RNA (lncRNA) antisense transcript overlapping theOsSOC1gene.Ef-cdlncRNA expression positively correlates with the expression ofOsSOC1and H3K36me3 deposition. Field test comparisons of early maturingEf-cdnear-isogenic lines with their wild types as well as of the derivative early maturing hybrids with their wild-type hybrids conducted under different latitudes determined that the early maturingEf-cdallele shortens maturity duration (ranging from 7 to 20 d) without a concomitant yield penalty.Ef-cdfacilitates nitrogen utilization and also improves the photosynthesis rate. Analysis of 1,439 elite hybrid rice varieties revealed that the 16 homozygotes and 299 heterozygotes possessingEf-cdmatured significantly earlier. Therefore,Ef-cdcould be a vital contributor of elite early maturing hybrid varieties in balancing grain yield with maturity duration. |
| 英文摘要: | The contradiction between “high yielding” and “early maturing” hampers further improvement of annual rice yield. Here we report the positional cloning of a major maturity duration regulatory gene,Early flowering-completely dominant(Ef-cd), and demonstrate that natural variation inEf-cdcould be used to overcome the above contradictory. TheEf-cdlocus gives rise to a long noncoding RNA (lncRNA) antisense transcript overlapping theOsSOC1gene.Ef-cdlncRNA expression positively correlates with the expression ofOsSOC1and H3K36me3 deposition. Field test comparisons of early maturingEf-cdnear-isogenic lines with their wild types as well as of the derivative early maturing hybrids with their wild-type hybrids conducted under different latitudes determined that the early maturingEf-cdallele shortens maturity duration (ranging from 7 to 20 d) without a concomitant yield penalty.Ef-cdfacilitates nitrogen utilization and also improves the photosynthesis rate. Analysis of 1,439 elite hybrid rice varieties revealed that the 16 homozygotes and 299 heterozygotes possessingEf-cdmatured significantly earlier. Therefore,Ef-cdcould be a vital contributor of elite early maturing hybrid varieties in balancing grain yield with maturity duration. |
| 刊物名称: | PNAS |
| 英文刊物名称: | PNAS |
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| 其它备注: | Jun Fang, Fantao Zhang, Hongru Wang, Wei Wang, Fei Zhao, Zijuan Li, Changhui Sun, Faming Chen, Fan Xu, Shuoqi Chang, Liang Wu, Qingyun Bu, Pingrong Wang, Jiankun Xie, Fan Chen, Xuehui Huang, Yijing Zhang, Xinguang Zhu, Bin Han, Xiaojian Deng, and Chengcai Chu. Ef-cd Locus Shortens Rice Maturity Duration Without Yield Penalty. PNAS. DOI:10.1073/pnas.1815030116 |
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