Constitutive expression of ETHYLENE-RESPONSE-FACTOR1 in Arabidopsis confers resistance to several necrotrophic fungi
Constitutive expression of ETHYLENE-RESPONSE-FACTOR1 in Arabidopsis confers resistance to several necrotrophic fungi
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DOI：
10.1046/j.1365-313x.2002.01191.x
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发表时间：
2002-01-01
期刊：
影响因子：
7.2
通讯作者：
Solano, R
中科院分区：
文献类型：
--
作者：
Berrocal-Lobo, M;Molina, A;Solano, R
病原菌侵染植物后会诱导植物产生多种防御反应，其中包括水杨酸（SA）、茉莉酸（JA）和乙烯（E）等信号分子的作用。在这里，我们描述了乙烯反应因子1（ERF1）作为拟南芥病原体攻击后乙烯反应的调节因子的作用。ERF 1转录物在灰葡萄孢感染时被诱导，并且ERF 1在拟南芥中的过表达足以赋予对坏死营养型真菌如B的抗性。cinerea和黄瓜褐斑病菌Plectosphaerella cucumerina。在黄瓜疫霉的抗性反应中，E途径和SA途径之间存在正协同作用。然而，感染假单胞菌番茄DC3000，不影响ERF1的表达，和ERF1过表达在拟南芥植物中的乙烯反应的激活降低了对这种病原体的耐受性，这表明E和SA信号通路之间的负串扰，并表明这两种途径之间的积极和消极的相互作用可以建立取决于病原体的类型。
Infection of a plant by a pathogen induces a variety of defense responses that imply the action of several signaling molecules, including salicylic acid (SA), jasmonic acid (JA) and ethylene (E). Here we describe the role of ETHYLENE-RESPONSE-FACTOR1 (ERF1) as a regulator of ethylene responses after pathogen attack in Arabidopsis. The ERF1 transcript is induced on infection by Botrytis cinerea, and overexpression of ERF1 in Arabidopsis is sufficient to confer resistance to necrotrophic fungi such as B. cinerea and Plectosphaerella cucumerina. A positive co-operation between E and SA pathways was observed in the plant response to P. cucumerina. Infection by Pseudomonas syringae tomato DC3000, however, does not affect ERF1 expression, and activation of ethylene responses by ERF1 overexpression in Arabidopsis plants reduces tolerance against this pathogen, suggesting negative crosstalk between E and SA signaling pathways, and demonstrating that positive and negative interactions between both pathways can be established depending on the type of pathogen.