Integration of Ethylene and Light Signaling Affects Hypocotyl Growth in Arabidopsis.
Integration of Ethylene and Light Signaling Affects Hypocotyl Growth in Arabidopsis.
复制标题
乙烯和光信号的整合会影响拟南芥中的下胚轴生长。
DOI：
10.3389/fpls.2017.00057
复制
发表时间：
2017
影响因子：
5.6
通讯作者：
Huang R
中科院分区：
文献类型：
--
作者：
Yu Y;Huang R
拟南芥下胚轴生长作为研究乙烯对细胞伸长影响的理想模型，因其在光照下乙烯刺激下胚轴伸长而在黑暗中乙烯抑制下胚轴伸长的独特特性而被广泛应用。虽然乙烯对下胚轴生长的对比效应早已为人所知，但这种效应的分子基础只是在近年来才逐渐被确定。在光照下，乙烯促进植物色素相互作用因子3（PIF3）的表达和伸长下胚轴5（HY5）蛋白的降解，从而刺激下胚轴生长。在黑暗条件下，乙烯诱导的乙烯反应因子1（ERF 1）和波阻尼因子5（WDL 5）对下胚轴伸长具有抑制作用。此外，组成型光形态发生蛋白1（COP 1）和光敏色素B（phyB）以不同的方式介导光抑制乙烯反应。在这里，我们回顾了几个关键的进展与乙烯调节下胚轴伸长，重点是乙烯和光信号的整合过程中从土壤中出苗。
As an ideal model for studying ethylene effects on cell elongation, Arabidopsis hypocotyl growth is widely used due to the unique characteristic that ethylene stimulates hypocotyl elongation in the light but inhibits it in the dark. Although the contrasting effect of ethylene on hypocotyl growth has long been known, the molecular basis of this effect has only gradually been identified in recent years. In the light, ethylene promotes the expression of PHYTOCHROME INTERACTING FACTOR 3 (PIF3) and the degradation of ELONGATED HYPOCOTYL 5 (HY5) protein, thus stimulating hypocotyl growth. In the dark, ETHYLENE RESPONSE FACTOR 1 (ERF1) and WAVE-DAMPENED 5 (WDL5) induced by ethylene are responsible for its inhibitory effect on hypocotyl elongation. Moreover, CONSTITUTIVE PHOTOMORPHOGENIC 1 (COP1) and PHYTOCHROME B (phyB) mediate the light-suppressed ethylene response in different ways. Here, we review several pivotal advances associated with ethylene-regulated hypocotyl elongation, focusing on the integration of ethylene and light signaling during seedling emergence from the soil.