Annals of the Brazilian Congress of Plant Physiology and Ibero-latinamerican Congress of Plant Biology

BR PHYTOPROTECTIVE FILM INDUCER OF SYSTEMIC RESISTANCE IN SOYBEAN

Published in 26/09/2022 - ISBN: 978-65-5941-830-5

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Paper Title
BR PHYTOPROTECTIVE FILM INDUCER OF SYSTEMIC RESISTANCE IN SOYBEAN
Authors
  • Elsa Kuhn Klumb
  • Ricardo Valgas
  • Bernardo Ueno
  • Ricardo Antônio Vicintin
  • Roberval Pereira Brito
  • Ângela Diniz Campos
Modality
Abstract
Subject area
Plant Physiology
Publishing Date
26/09/2022
Country of Publishing
Brasil
Language of Publishing
Inglês
Paper Page
https://www.even3.com.br/anais/cbfv2022_registration/516163-br-phytoprotective-film-inducer-of-systemic-resistance-in-soybean
ISBN
978-65-5941-830-5
Keywords
phenylalanine ammonia-lyase, Glycine max, peroxidase, chitosan
Summary
Induction of systemic resistance in plants is an alternative to avoid or delay pest attack and diseases, with less environmental impact. Plant resistance inducers have a broad spectrum and longer duration and can reduce the amounts of the agrochemicals used when associated with conventional treatments. This study assessed the effect of inducing systemic resistance in soybean plants with phytoprotective film (FFBR) through the analysis of phenylalanine ammonia-lyase (FAL) and peroxidase (PO). FFBR was produced and supplied by RIMA Industrial S/A. FFBR is a chitosan-based formulation with a defined degree of deacetylation that presents stability at temperatures up to 60°C, featuring a UVB and UVC light blocker. It is flexible, porous, hygroscopic, and it keeps its physical integrity under immersion in water, returning to the initial appearance after drying. We evaluated the specific activity of FAL, an enzyme necessary for the synthesis of phenols and phytoalexins associated with resistance in plants, and of PO, which is directly involved in lignification metabolism and wound healing. The experiment was conducted in a greenhouse under a randomized block design with four repetitions and 12 plants per repetition. Data were submitted to the analysis of variance at significance levels of 5%. FFBR was sprayed on plant shoots at concentrations of 0.5, 1.0, 2.0, and 5.0% in the V6/V7, V9/V10, R1/R2 and R3/R4 stages, with a total of four applications during the soybean cycle. Leaves were sampled at stages R1/R2 and R3/R4. FFBR at 1% provided significant increases in the FAL activity. The greatest increases in the PO activity occurred after three applications. Therefore, FFBR induces greater resistance to soybean plants at 1% dilution in foliar spray.
Title of the Event
XVIII Brazilian Congress of Plant Physiology and I Ibero-latinoamerican Congress of Plant Biology
City of the Event
Porto Alegre
Title of the Proceedings of the event
Annals of the Brazilian Congress of Plant Physiology and Ibero-latinamerican Congress of Plant Biology
Name of the Publisher
Even3
Means of Dissemination
Meio Digital

How to cite

KLUMB, Elsa Kuhn et al.. BR PHYTOPROTECTIVE FILM INDUCER OF SYSTEMIC RESISTANCE IN SOYBEAN.. In: Annals of the Brazilian Congress of Plant Physiology and Ibero-latinamerican Congress of Plant Biology. Anais...Porto Alegre(RS) CEPUCRS, 2022. Available in: https//www.even3.com.br/anais/cbfv2022_registration/516163-BR-PHYTOPROTECTIVE-FILM-INDUCER-OF-SYSTEMIC-RESISTANCE-IN-SOYBEAN. Access in: 12/06/2025

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