水稻 WUSCHEL 相关同源盒 3A（OsWOX3A）调节侧根和根毛发育中的生长素转运基因的表达。
Rice WUSCHEL-related homeobox 3A (OsWOX3A) modulates auxin-transport gene expression in lateral root and root hair development.
出版信息
Plant Signal Behav. 2013 Oct;8(10):doi: 10.4161/psb.25929. doi: 10.4161/psb.25929.
Abstract
Coordinated regulation of the many genes controlling leaf, flower, and root development determines the phenotypes of plants; this regulation requires exquisite control of many transcription factors, including the WUSCHEL-related homeobox (WOX) family. We recently reported that rice (Oryza sativa) WUSCHEL-related homeobox 3A (OsWOX3A) plays important roles in organ development, including lateral-axis outgrowth and vasculature patterning in leaves, lemma and palea morphogenesis in spikelets, and the numbers of tillers and lateral roots. OsWOX3A is encoded by NARROW LEAF2 (NAL2) and NAL3, a pair of duplicated genes. In this study, further analysis of nal2 nal3 (hereafter nal2/3) double mutants revealed that, in addition to its role in lateral root development, OsWOX3A also acts in the control of root hair formation. Based on this new finding, we describe a possible mechanism by which OsWOX3A regulation of auxin transport genes acts in root development.
摘要
协调控制控制叶片、花朵和根系发育的众多基因决定了植物的表型；这种调节需要对许多转录因子进行精确控制，包括 WUSCHEL 相关同源盒（WOX）家族。我们最近报道，水稻（Oryza sativa）WUSCHEL 相关同源盒 3A（OsWOX3A）在器官发育中发挥重要作用，包括叶片、外稃和内稃形态发生中的侧轴生长和脉纹模式，以及分蘖和侧根的数量。OsWOX3A 由窄叶 2（NAL2）和 NAL3 编码，是一对重复基因。在这项研究中，对 nal2 nal3（以下简称 nal2/3）双突变体的进一步分析表明，除了在侧根发育中的作用外，OsWOX3A 还在根毛形成的控制中起作用。基于这一新发现，我们描述了 OsWOX3A 调节生长素转运基因在根系发育中的作用的一种可能机制。
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