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作为增强植物先天免疫的生物技术工具的生物效应器：涉及的信号转导途径

Bioeffectors as Biotechnological Tools to Boost Plant Innate Immunity: Signal Transduction Pathways Involved.

作者信息

Martin-Rivilla Helena, Garcia-Villaraco Ana, Ramos-Solano Beatriz, Gutierrez-Mañero Francisco Javier, Lucas Jose Antonio

机构信息

Plant Physiology, Pharmaceutical and Health Sciences Department, Faculty of Pharmacy, Universidad San Pablo-CEU Universities, 28668 Boadilla del Monte, Spain.

出版信息

Plants (Basel). 2020 Dec 8;9(12):1731. doi: 10.3390/plants9121731.

DOI:10.3390/plants9121731
PMID:33302428
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7762609/
Abstract

The use of beneficial rhizobacteria (bioeffectors) and their derived metabolic elicitors are efficient biotechnological alternatives in plant immune system elicitation. This work aimed to check the ability of 25 bacterial strains isolated from the rhizosphere of , and selected for their biochemical traits from a group of 175, to trigger the innate immune system of seedlings against the pathogen pv. DC3000. The five strains more effective in preventing pathogen infection were used to elucidate signal transduction pathways involved in the plant immune response by studying the differential expression of Salicylic acid and Jasmonic acid/Ethylene pathway marker genes. Some strains stimulated both pathways, while others stimulated either one or the other. The metabolic elicitors of two strains, chosen for the differential expression results of the genes studied, were extracted using n-hexane, ethyl acetate, and n-butanol, and their capacity to mimic bacterial effect to trigger the plant immune system was studied. N-hexane and ethyl acetate were the most effective fractions against the pathogen in both strains, achieving similar protection rates although gene expression responses were different from that obtained by the bacteria. These results open an amount of biotechnological possibilities to develop biological products for agriculture.

摘要

使用有益的根际细菌（生物效应剂）及其衍生的代谢激发子是激发植物免疫系统的有效生物技术替代方法。这项工作旨在检测从根际分离出的25株细菌菌株的能力，这些菌株是从175株中根据其生化特性挑选出来的，用于激发 幼苗针对病原菌 丁香假单胞菌番茄致病变种DC3000的先天免疫系统。通过研究水杨酸和茉莉酸/乙烯途径标记基因的差异表达，使用在预防病原体感染方面最有效的5株菌株来阐明植物免疫反应中涉及的信号转导途径。一些菌株刺激了两条途径，而另一些菌株只刺激了其中一条途径。根据所研究基因的差异表达结果选择了两株菌株，用正己烷、乙酸乙酯和正丁醇提取它们的代谢激发子，并研究了它们模拟细菌效应激发植物免疫系统的能力。正己烷和乙酸乙酯是两株菌株中对抗病原体最有效的馏分，尽管基因表达反应与细菌获得的不同，但实现了相似的保护率。这些结果为开发农业生物产品开辟了大量生物技术可能性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b055/7762609/399322de35cc/plants-09-01731-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b055/7762609/dac9c397a656/plants-09-01731-g001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b055/7762609/399322de35cc/plants-09-01731-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b055/7762609/dac9c397a656/plants-09-01731-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b055/7762609/31f649c42e77/plants-09-01731-g002.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b055/7762609/ca5e1f8b3eba/plants-09-01731-g005.jpg
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