Natural Variation in Hd17, a Homolog of Arabidopsis ELF3 That is Involved in Rice Photoperiodic Flowering
Natural Variation in Hd17, a Homolog of Arabidopsis ELF3 That is Involved in Rice Photoperiodic Flowering
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DOI：
10.1093/pcp/pcs028
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发表时间：
2012-04-01
影响因子：
4.9
通讯作者：
Yano, Masahiro
中科院分区：
文献类型：
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作者：
Matsubara, Kazuki;Ogiso-Tanaka, Eri;Yano, Masahiro
水稻的开花时间强烈地依赖于光周期反应。我们以前确定了一个数量性状位点，抽穗期17（Hd17），这是与日本水稻（Oryza sativa L.）个品种在这里，我们表明，这种差异可能是由于一个假定的基因内的单核苷酸多态性，该基因编码拟南芥EARLY FLOWARD3蛋白的同源物，该蛋白在维持昼夜节律中起着重要作用。我们的研究结果表明，Hd17的自然变异可能会改变开花抑制因子的转录水平，粒数，株高和抽穗期7（Ghd7），这表明Hd17是水稻光周期开花途径的一部分。
Flowering time of rice depends strongly on photoperiodic responses. We previously identified a quantitative trait locus, Heading date 17 (Hd17), that is associated with a difference in flowering time between Japanese rice (Oryza sativa L.) cultivars. Here, we show that the difference may result from a single nucleotide polymorphism within a putative gene that encodes a homolog of the Arabidopsis EARLY FLOWERING 3 protein, which plays important roles in maintaining circadian rhythms. Our results demonstrate that natural variation in Hd17 may change the transcription level of a flowering repressor, Grain number, plant height and heading date 7 (Ghd7), suggesting that Hd17 is part of rice's photoperiodic flowering pathway.