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挥发性有机化合物是诱导葡萄防御反应的相关生物标志物。

VOCs Are Relevant Biomarkers of Elicitor-Induced Defences in Grapevine.

机构信息

Agroécologie, AgroSup Dijon, CNRS, INRAE, Univ. Bourgogne, Univ. Bourgogne Franche-Comté, 21000 Dijon, France.

Institut de Chimie Organique et Analytique, ICOA, UMR 7311, Université d'Orléans, rue de Chartres, BP 6759, CEDEX 2, 45067 Orléans, France.

出版信息

Molecules. 2021 Jul 13;26(14):4258. doi: 10.3390/molecules26144258.

DOI:10.3390/molecules26144258
PMID:34299533
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8306312/
Abstract

Grapevine is susceptible to fungal diseases generally controlled by numerous chemical fungicides. Elicitors of plant defence are a way of reducing the use of these chemicals, but still provide inconsistent efficiency. Easy-to-analyse markers of grapevine responses to elicitors are needed to determine the best conditions for their efficiency and position them in protection strategies. We previously reported that the elicitor sulphated laminarin induced the emission of volatile organic compounds (VOCs) by grapevine leaves. The present study was conducted to characterise and compare VOC emissions in response to other elicitors. Bastid was first used to test the conditions of VOC collection and analysis. Using SBSE-GC-MS, we detected several VOCs, including the sesquiterpene α-farnesene, in a time-dependent manner. This was correlated with the induction of farnesene synthase gene expression, in parallel with stilbene synthesis (another defence response), and associated to resistance against downy mildew. The other elicitors (Redeli, Romeo, Bion, chitosan, and an oligogalacturonide) induced VOC emission, but with qualitative and quantitative differences. VOC emission thus constitutes a response of grapevine to elicitors of various chemical structures. Therefore, VOC analysis is relevant for studying the impact of environmental factors on grapevine defence responses and optimising the performance of elicitors in vineyards.

摘要

葡萄藤易受真菌病害影响，通常需要使用多种化学杀菌剂进行防治。植物防御诱导剂是减少这些化学物质使用的一种方法，但效果仍不一致。需要易于分析的葡萄藤对诱导剂反应的标记物，以确定其效率的最佳条件，并将其纳入保护策略中。我们之前曾报道过，硫酸化几丁质可诱导葡萄叶片释放挥发性有机化合物（VOC）。本研究旨在对其他诱导剂的 VOC 释放进行表征和比较。首先使用 Bastid 来测试 VOC 收集和分析的条件。使用 SBSE-GC-MS，我们以时间依赖性方式检测到了几种 VOC，包括倍半萜 α-法呢烯。这与法呢烯合酶基因表达的诱导平行，与芪类合成（另一种防御反应）相关，同时与对霜霉病的抗性相关。其他诱导剂（Redeli、Romeo、Bion、壳聚糖和寡半乳糖醛酸）也诱导了 VOC 的释放，但存在定性和定量的差异。因此，VOC 分析是研究环境因素对葡萄藤防御反应影响和优化田间诱导剂性能的相关手段。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e832/8306312/89a78fe51627/molecules-26-04258-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e832/8306312/9d465c192866/molecules-26-04258-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e832/8306312/ea62027d7224/molecules-26-04258-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e832/8306312/5cbcb1faf5db/molecules-26-04258-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e832/8306312/548d0e045175/molecules-26-04258-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e832/8306312/5d0d10fa6783/molecules-26-04258-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e832/8306312/89a78fe51627/molecules-26-04258-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e832/8306312/9d465c192866/molecules-26-04258-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e832/8306312/ea62027d7224/molecules-26-04258-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e832/8306312/5cbcb1faf5db/molecules-26-04258-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e832/8306312/548d0e045175/molecules-26-04258-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e832/8306312/5d0d10fa6783/molecules-26-04258-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e832/8306312/89a78fe51627/molecules-26-04258-g006.jpg

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