Arabidopsis proline-rich extensin-like receptor kinase 4 modulates the early event toward abscisic acid response in root tip growth

Arabidopsis proline-rich extensin-like receptor kinase 4 modulates the early event toward abscisic acid response in root tip growth
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拟南芥富含脯氨酸的延伸蛋白样受体激酶4调节根尖生长中脱落酸反应的早期事件

DOI:
10.4161/psb.4.11.9739
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发表时间:
2009-11
影响因子:
2.9
通讯作者:
Song Chun-Peng
Song Chun-Peng
中科院分区:
生物学4区
文献类型:
--
作者:
BaiLing;ZhouYun;Song Chun-Peng

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外源施用植物激素脱落酸(ABA)可抑制根系生长。我们最近报道了富含脯氨酸的延伸蛋白样受体激酶4 (PERK4)在ABA信号传导的早期阶段通过干扰Ca2+稳态来抑制初代根细胞的伸长转录分析表明,PERK4调控了根生长中与细胞伸长和ABA信号相关的基因,如多半乳糖酶、AtExt1、AtMYC2和ABR1的表达。在ABA处理下,perk4植株中Ca2+响应基因ZAT10的转录水平明显高于野生型。基于目前的数据和先前的证据,我们提出了一种可能的perk4介导的aba调节的原代根细胞生长模型。
Exogenous application of plant hormone abscisic acid (ABA) can inhibit root growth. We recently reported that the proline-rich extensin-like receptor kinase 4 (PERK4), functions at an early stage of ABA signalling to inhibit primary root cell elongation by perturbing Ca2+ homeostasis.1 Transcription analysis indicated that PERK4 modulates the expression of the genes related to cell elongation and ABA signaling in root growth, such as polygalacturonases, AtExt1, AtMYC2, and ABR1. Under ABA treatment, the transcript level of ZAT10, a Ca2+- responsive gene, was much more increased in perk4 plants compared to that of wild-type. Based on both present data and the previous evidences, we propose a probable model for PERK4-mediated ABA-regulated primary root cell growth.
DOI: 10.1126/science.1173041
发表时间: 2009-05-22
期刊: Science (New York, N.Y.)
影响因子: --
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