Elicitor-Induced Defense Response in Soybean Plants Challenged by Bemisia tabaci

Locateli, Bruna Taiza and Cruz, Mycheli Preuss da and Dalacosta, Nean Locatelli and Oligine, Karine Fuschter and Bertoldo, Edson and Mazaro, Sérgio Miguel and Haas, Jucelaine and Potrich, Michele and Favetti, Caroline Isabella (2019) Elicitor-Induced Defense Response in Soybean Plants Challenged by Bemisia tabaci. Journal of Agricultural Science, 11 (2). p. 251. ISSN 1916-9752

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Abstract

The whitefly, Bemisia tabaci Biotype B (Hemiptera: Aleyrodidae), is considered one of the world’s major agricultural pest groups, attacking a wide range of crop hosts and causing considerable crop loss. Understanding the interactions between whiteflies and host plants promotes the development of novel strategies for controlling whiteflies. This study aimed to evaluate the biochemical alterations caused by induced resistance in soybean plants, challenged by B. tabaci. The experiment was performed at the Federal University of Technology, Parana. Soybean seeds (cv. BRS 284) were sown in polyethylene pots in the greenhouse. The elicitors sprayed on the soybean leaves were: acibenzolar-S-Methyl (ASM-0.005%); Salicylic Acid (SA-2Mm); foliar phosphite (ULTRA K®-0.004%); Chitosan (CH-1%); and silicon (SI-0.25%); whilst the control group was sprayed with distilled water. Plants were infested with 50 adult whiteflies in the cages that were released after applying the treatments. At 0, 24, 48 and 96 hours after the beginning of the experiment, biochemical analyses of total proteins and the activity of the phenylalanine ammonia-lyase (PAL), peroxidases (PO), phenolic compounds, chitinase, and β-1,3-glucanase were made. The results showed that the application of elicitors increased the route of the phenylpropanoids with the activation of PAL and formation of phenolic compounds. It was also verified the activation of pathogenicity-related enzymes such as peroxidases and chitinase.

Item Type: Article
Subjects: European Repository > Agricultural and Food Science
Depositing User: Managing Editor
Date Deposited: 11 May 2023 05:19
Last Modified: 12 Jan 2024 04:39
URI: http://go7publish.com/id/eprint/2235

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