RALFL34 regulates formative cell divisions in Arabidopsis pericycle during lateral root initiation.
RALFL34 regulates formative cell divisions in Arabidopsis pericycle during lateral root initiation.
复制标题
RALFL34 在侧根萌生期间调节拟南芥中柱鞘的形成细胞分裂。
DOI：
10.1093/jxb/erw281
复制
发表时间：
2016-08
影响因子：
6.9
通讯作者：
De Smet I
中科院分区：
文献类型：
--
作者：
Murphy E;Vu LD;Van den Broeck L;Lin Z;Ramakrishna P;van de Cotte B;Gaudinier A;Goh T;Slane D;Beeckman T;Inzé D;Brady SM;Fukaki H;De Smet I
我们描述了RALFL34在侧根发育早期事件中的作用，并证明了其在策划周膜形成细胞分裂中的特殊重要性。在植物中，许多信号分子，如植物激素、miRNA、转录因子和小信号肽，驱动生长和发育。然而，很少有小的信号肽已被证明是侧根发育所必需的。在这里，我们描述了在侧根发育的早期事件中的肽RALFL34的作用，并证明了其特定的重要性，在精心策划的形成细胞分裂的周。我们的研究结果进一步表明，这种小的信号肽作用于转录级联，导致一个新的侧根上游的GATA 23，侧根形成的重要球员。此外，我们描述了乙烯反应因子（ERF）在调节RALFL 34表达中的作用。综上所述，我们提出RALFL 34作为一个新的，重要的球员在侧根的发生。
We describe the role of RALFL34 during early events in lateral root development, and demonstrate its specific importance in orchestrating formative cell divisions in the pericycle. In plants, many signalling molecules, such as phytohormones, miRNAs, transcription factors, and small signalling peptides, drive growth and development. However, very few small signalling peptides have been shown to be necessary for lateral root development. Here, we describe the role of the peptide RALFL34 during early events in lateral root development, and demonstrate its specific importance in orchestrating formative cell divisions in the pericycle. Our results further suggest that this small signalling peptide acts on the transcriptional cascade leading to a new lateral root upstream of GATA23, an important player in lateral root formation. In addition, we describe a role for ETHYLENE RESPONSE FACTORs (ERFs) in regulating RALFL34 expression. Taken together, we put forward RALFL34 as a new, important player in lateral root initiation.