Hd3a protein is a mobile flowering signal in rice
Hd3a protein is a mobile flowering signal in rice
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DOI：
10.1126/science.1141753
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发表时间：
2007-05-18
期刊：
影响因子：
56.9
通讯作者：
Shimamoto, Ko
中科院分区：
文献类型：
--
作者：
Tamaki, Shojiro;Matsuo, Shoichi;Shimamoto, Ko
成花素是一种从诱导叶移动到茎尖并导致开花的移动的信号，自70年前首次提出以来一直无法识别。了解移动的开花信号的性质将为了解成花诱导的分子机制提供关键的见解。最近的研究表明，拟南芥FLOWERLOCUS T（FT）基因是编码成花素的候选基因。我们发现，Hd3a编码的蛋白质，水稻直系同源物的移动从叶片到地上部顶端分生组织，并诱导水稻开花。这些结果表明Hd3a蛋白可能是水稻成花素。
Florigen, the mobile signal that moves from an induced leaf to the shoot apex and causes flowering, has eluded identification since it was first proposed 70 years ago. Understanding the nature of the mobile flowering signal would provide a key insight into the molecular mechanism floral induction. Recent studies suggest that the Arabidopsis FLOWERING LOCUS T ( FT) gene is a candidate for encoding florigen. We show that the protein encoded by Hd3a, a rice ortholog of moves from the leaf to the shoot apical meristem and induces flowering in rice. These results suggest that the Hd3a protein may be the rice florigen.