Plant Sciences Institute, Agricultural Research Organization, Bet Dagan, Israel.
Plant Signal Behav. 2011 Jul;6(7):1004-5. doi: 10.4161/psb.6.7.15501.
The newly defined phytohormones strigolactones (SLs) were recently shown to act as regulators of root development. Their positive effect on root-hair (RH) elongation enabled examination of their cross talk with auxin and ethylene. Analysis of wild-type plants and hormone-signaling mutants combined with hormonal treatments suggested that SLs and ethylene regulate RH elongation via a common regulatory pathway, in which ethylene is epistatic to SLs. The SL and auxin hormonal pathways were suggested to converge for regulation of RH elongation; this convergence was suggested to be mediated via the ethylene pathway, and to include regulation of auxin transport.
新定义的植物激素独脚金内酯(SLs)最近被证明是调节根系发育的调节剂。它们对根毛伸长的积极作用使人们能够研究它们与生长素和乙烯的相互作用。对野生型植物和激素信号突变体的分析以及激素处理表明,SLs 和乙烯通过一个共同的调节途径调节 RH 伸长,其中乙烯对 SLs 具有上位性。SL 和生长素的激素途径被认为是调节 RH 伸长的汇聚途径;这种汇聚被认为是通过乙烯途径介导的,并包括生长素运输的调节。