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The fungal elicitor AsES requires a functional ethylene pathway to activate the innate immunity in strawberry.
Plant Biology ( IF 4.2 ) Pub Date : 2020-08-05 , DOI: 10.1111/plb.13163 S M Perato 1 , R N Furio 1 , R H Tomas-Grau 1 , M P Caro 1 , V Hael-Conrad 2 , J C Díaz-Ricci 1 , M G Martinez-Zamora 1
中文翻译：
真菌引发剂AsES需要功能性的乙烯途径来激活草莓的先天免疫力。
更新日期：2020-08-05
Plant Biology ( IF 4.2 ) Pub Date : 2020-08-05 , DOI: 10.1111/plb.13163 S M Perato 1 , R N Furio 1 , R H Tomas-Grau 1 , M P Caro 1 , V Hael-Conrad 2 , J C Díaz-Ricci 1 , M G Martinez-Zamora 1
Affiliation
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- Acremonium strictum Elicitor Subtilisin (AsES) is a fungal elicitor that activates innate immunity, conferring disease resistance in strawberry (Fragaria × ananassa Duch.), Arabidopsis and other plant species. The aim of the present work was to evaluate the involvement of the ethylene (ET) signalling pathway in AsES‐mediated immune response in strawberry.
- Ethylene production and expression of the genes responsible for ET synthesis, perception and response were measured after AsES treatment. ROS (H2O2) accumulation and immunity induced by AsES were studied after ET perception was blocked by 1‐methylcyclopropene (1‐MCP).
- Biochemical and molecular results showed that AsES induced a marked increase in local and systemic biosynthesis of ET, both in a biphasic manner. Blocking of ET perception by 1‐MCP prior to AsES induction reduced production of ROS (H2O2) and prevented AsES from eliciting defence against fungal pathogens having different lifestyles, such as Botrytis cinerea (necrotrophic) and Colletotrichum acutatum (hemibiotrophic).
- These findings contribute to elucidate the mode of action of the novel elicitor subtilase, AsES, specifically regarding the role of ET signalling in the activation of plant innate immunity, in addition to the multitude of processes regulated by ET in plants.
中文翻译：
真菌引发剂AsES需要功能性的乙烯途径来激活草莓的先天免疫力。
- Acremonium strictum Elicitor Subtilisin（AsES）是一种真菌引发剂，可激活先天免疫力，赋予草莓（Fragaria × ananassa Duch。），拟南芥和其他植物物种抗病性。本工作的目的是评估乙烯（ET）信号传导途径参与草莓AsES介导的免疫反应的过程。
- 在AsES处理后，测量乙烯的产生以及负责ET合成，知觉和反应的基因的表达。在1-甲基环丙烯（1-MCP）阻断ET感知后，研究了AsES诱导的ROS（H 2 O 2）积累和免疫。
- 生化和分子结果表明，AsES以双相方式诱导ET的局部和全身生物合成显着增加。在ASES诱导之前用1-MCP阻断ET感知可降低ROS（H 2 O 2）的产生，并阻止AsES引发对具有不同生活方式的真菌病原体的防御，例如灰葡萄孢（netrytrophic）和acutatum Colletotrichum acutatum（hemibiotrophic）。
- 这些发现有助于阐明新型引发剂枯草蛋白酶AsES的作用方式，特别是关于ET信号传导在激活植物固有免疫力中的作用，以及植物中ET调控的众多过程。
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