Ectopic expression of the Arabidopsis AtMYB23 gene induces differentiation of trichome cells
Ectopic expression of the Arabidopsis AtMYB23 gene induces differentiation of trichome cells
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DOI：
10.1006/dbio.2001.0287
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发表时间：
2001-07-15
影响因子：
2.7
通讯作者：
Bäumlein, H
中科院分区：
文献类型：
--
作者：
Kirik, V;Schnittger, A;Bäumlein, H
表皮细胞命运的调控是一个复杂的分子过程，需要不同转录因子的调节活性。在此，我们描述了拟南芥MYB转录因子家族的一个成员AtMYB23的分离，它参与毛状体的发育。在病毒花椰菜花叶病毒（CaMV）35S启动子控制下AtMYB23基因的表达导致异位毛状体的发育。异位毛状体的形成依赖于透明种皮无毛1（TRANSPARENT TESTA GLABRA1），但不依赖于无毛1（GLABRA1）。负调控因子三裂叶（TRIPTYCHON）的缺失导致子叶上异位毛状体的分支以及叶表皮下细胞层中异位毛状体的形成。CaMV 35S启动子控制的AtMYB23表达可以部分挽救无毛1突变体表型。总之，所呈现的数据表明AtMYB23基因在控制毛状体发育起始方面与无毛1具有部分重叠的功能。（C）2001学术出版社
The control of epidermal cell fate is a complex molecular process and requires the regulatory activity of different transcription factors. Here, we describe the isolation of a member of the Arabidopsis MYB transcription factor family, AtMYB23, that is involved in trichome development. Expression of the AtMYB23 gene under the control of the viral CaMV 35S promoter causes the development of ectopic trichomes, The formation of ectopic trichomes depends on TRANSPARENT TESTA GLABRA1 but not on GLABRA1, The absence of the negative regulator TRIPTYCHON leads to branching of the ectopic trichomes on cotyledons and the formation of ectopic trichomes in the leaf subepidermal cell layer. The CaMV 35S promoter-controlled expression of AtMYB23 can partially rescue the glabra1 mutant phenotype, Together, the presented data indicate that the AtMYB23 gene has partially overlapping functions with GLABRA1 in controlling the initiation of trichome development. (C) 2001 Academic Press.