Relationship between brassinosteroids and genes controlling stomatal production in the Arabidopsis hypocotyl
Relationship between brassinosteroids and genes controlling stomatal production in the Arabidopsis hypocotyl
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DOI：
10.1387/ijdb.120029ls
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发表时间：
2012-01-01
影响因子：
0.7
通讯作者：
Serna, Laura
中科院分区：
文献类型：
--
作者：
Fuentes, Sonia;Canamero, Roberto C.;Serna, Laura
气孔是研究调控细胞命运决定和图案形成机制的极好模型系统。最近的研究表明油菜素类固醇通过调节MAPK激酶YODA和碱性螺旋-环-螺旋转录因子SPEECHLESS来控制气孔发育。在这里，我们表明，这些植物调节剂积极调节气孔的形成下胚轴，也加速他们的发展。激素测试、报告基因研究和突变体分析显示，油菜素类固醇在转录因子CAPRICE和GLABRA 2的上游起作用。这些植物调节剂控制气孔产生的早期阶段比那些由膜受体太多的嘴。这项工作突出了子叶或叶和下胚轴之间气孔发育的遗传控制差异。
Stomata are excellent model systems for examining the mechanisms that regulate cell fate determination and pattern formation. It has recently been demonstrated that brassinosteroids control stomatal development by regulating both the MAPK kinase kinase YODA and the basic helix-loop-helix transcriptional factor SPEECHLESS. Here, we show that these plant regulators positively regulate stomatal formation in the hypocotyl and also accelerate their development. Hormone tests, reporter gene studies and mutant analyses revealed that brassinosteroids act upstream of the transcriptional factors CAPRICE and GLABRA2. These plant regulators control an earlier stage of stomatal production than those regulated by the membrane receptor TOO MANY MOUTHS. This work highlights differences in the genetic control of stomatal development between cotyledons or leaves and hypocotyls.