Sequential activation of two Dof transcription factor gene promoters during vascular development in Arabidopsis thaliana
Sequential activation of two Dof transcription factor gene promoters during vascular development in Arabidopsis thaliana
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DOI：
10.1016/j.plaphy.2007.05.001
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发表时间：
2007-08-01
影响因子：
6.5
通讯作者：
Yanagisawa, Shuichi
中科院分区：
文献类型：
--
作者：
Konishi, Mineko;Yanagisawa, Shuichi
植物特异性Dof转录因子在植物中发挥着多种作用。我们发现，拟南芥（L.）在维管发育的早期过程——原形成层形成过程中，两个Dof基因启动子的活性受到严格调控。Heynh。AtDof2.4启动子在叶原基、根和胚的原形成层细胞中有活性，而AtDof5.8启动子在幼苗叶原基、胚发育中的子叶和花蕾发育中的维管组织中有特异性活性。atdoj5.8启动子在可察觉的原形成层形成之前表现出很强的活性，而AtDoJ2.4启动子则没有。AtDof2.4和AtDof5.8可能在血管发育的早期但不同的过程中起作用。(c) 2007年Elsevier Masson SAS。版权所有。
Plant-specific Dof transcription factors play various roles in plants. We show the strictly regulated activity of two Dof gene promoters during procambium formation, an early process for vascular development, in Arabidopsis thaliana (L.) Heynh. The AtDof2.4 promoter was active in procambial cells of leaf primordia, roots and embryos, whereas the AtDof5.8 promoter activity was specifically detectable in the cells of prospective veins in leaf primordia of seedlings and cotyledons of developing embryos, and the vascular tissue of developing flower buds. The AtDof5.8 promoter but not the AtDoJ2.4 promoter showed strong activity in advance of perceptible procambium formation. AtDof2.4 and AtDof5.8 might function in the early but different processes for vascular development. (c) 2007 Elsevier Masson SAS. All rights reserved.