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Molecules

Title:		Effective In Vitro Control of Two Phytopathogens of Agricultural Interest Using Cell-Free Extracts of Pseudomonas fluorescens and Chitosan
Author(s):		Trejo-Raya AB; Rodriguez-Romero VM; Bautista-Banos S; Quiroz-Figueroa FR; Villanueva-Arce R; Duran-Paramo E;
Address:		"Laboratory of Food Biotechnology, Unidad Profesional Interdisciplinaria de Biotecnologia (UPIBI), Instituto Politecnico Nacional (IPN), Av. Acueducto s/n, Barrio La Laguna Ticoman, Ciudad de Mexico CP 07340, Mexico. Centro de Desarrollo de Productos Bioticos (CeProBi), Department of Postharvest Technology, IPN, Km 8.5 Carretera Yautepec-Jojutla, San Isidro, Yautepec CP 62731, Morelos, Mexico. Laboratory of Molecular Plant Breeding, Centro Interdisciplinario de Investigacion para el Desarrollo Integral Regional Unidad Sinaloa (CIIDIR-IPN Unidad Sinaloa), Juan de Dios Batiz Paredes No. 250, San Joaquin, Guasave CP 81101, Sinaloa, Mexico"
Journal Title:		Molecules
Year:		2021
Volume:		20211021
Issue:		21
Page Number:		-
DOI:		10.3390/molecules26216359
ISSN/ISBN:		1420-3049 (Electronic) 1420-3049 (Linking)
Abstract:		"A biofungicide is a natural product that can be derived from various sources such as, among others, microorganisms, higher plants, animal products, phytochemicals, semiochemicals, and antagonist microorganisms. One of the most important approaches for the production of biofungicides is the combination of biocontrol agents. This study showed the inhibition growth of Alternaria alternata and Fusarium solani treated with cell-free extracts of P. fluorescens. Using thin-layer chromatography and plate assays it was also demonstrated that the cell-free extracts of P. fluorescens contained siderophores and derivates of 4-diacetylphloroglucinol and phenazine. Moreover, the combination of cell-free extracts of P. fluorescens and chitosan [50-1.5% (v/v)] had a synergistic effect since they notably inhibited the mycelial growth of A. altenata and F. solani. Various morphological alterations to the mycelia and conidia of the treated fungi as a result of this combination were also observed. The present study could be a starting point to control other fungal phytopathogens using different cell-free extracts and chitosan as biocontrol agents"
Keywords:		Anti-Infective Agents/chemistry/*pharmacology Cell Extracts/*chemistry/*pharmacology Chitosan/*chemistry/pharmacology Fungi/drug effects Microbial Sensitivity Tests Plant Diseases/*parasitology/*prevention & control Pseudomonas fluorescens/*chemistry Alte;
Notes:		"MedlineTrejo-Raya, Ariadna Berenice Rodriguez-Romero, Victor Manuel Bautista-Banos, Silvia Quiroz-Figueroa, Francisco Roberto Villanueva-Arce, Ramon Duran-Paramo, Enrique eng Switzerland 2021/11/14 Molecules. 2021 Oct 21; 26(21):6359. doi: 10.3390/molecules26216359"