« Previous AbstractSilicone rod extraction followed by liquid desorption-large volume injection-programmable temperature vaporiser-gas chromatography-mass spectrometry for trace analysis of priority organic pollutants in environmental water samples    Next AbstractTechnological performance of several Lactococcus and Enterococcus strains of dairy origin in milk »

Antibiotics (Basel)

Title:		Volatile Organic Compounds (VOCs) Produced by Gluconobacter cerinus and Hanseniaspora osmophila Displaying Control Effect against Table Grape-Rot Pathogens
Author(s):		Delgado N; Olivera M; Cadiz F; Bravo G; Montenegro I; Madrid A; Fuentealba C; Pedreschi R; Salgado E; Besoain X;
Address:		"Escuela de Agronomia, Facultad de Ciencias Agronomicas y de los Alimentos, Pontificia Universidad Catolica de Valparaiso, San Francisco s/n La Palma, Quillota 2260000, Chile. Molecular Microbiology and Environmental Biotechnology Laboratory, Department of Chemistry & Center of Biotechnology Daniel Alkalay Lowitt, Universidad Tecnica Federico Santa Maria, Avda. Espana 1680, Valparaiso 2390123, Chile. Escuela de Obstetricia y Puericultura, Facultad de Medicina, Universidad de Valparaiso, Angamos 655, Renaca, Vina del Mar 2520000, Chile. Laboratorio de Productos Naturales y Sintesis Organica (LPNSO), Departamento de Quimica, Facultad de Ciencias Naturales y Exactas, Universidad de Playa Ancha, Avda. Leopoldo Carvallo 270, Playa Ancha, Valparaiso 2340000, Chile. Escuela de Alimentos, Facultad de Ciencias Agronomicas y de los Alimentos, Pontificia Universidad Catolica de Valparaiso, Waddington 716, Valparaiso 2340000, Chile"
Journal Title:		Antibiotics (Basel)
Year:		2021
Volume:		20210601
Issue:		6
Page Number:		-
DOI:		10.3390/antibiotics10060663
ISSN/ISBN:		2079-6382 (Print) 2079-6382 (Electronic) 2079-6382 (Linking)
Abstract:		"Table grapes (Vitis vinifera) are affected by botrytis bunch rot and summer bunch rot, the latter a complex disease caused by Botrytis cinerea, Aspergillus spp., Penicillium expansum and Rhizopus stolonifer. To search for biocontrol alternatives, a new bioproduct composed of Gluconobacter cerinus and Hanseniaspora osmophila, a consortium called PUCV-VBL, was developed for the control of fungal rots in table grapes. Since this consortium presents new biocontrol species, the effect of their VOCs (volatile organic compounds) was evaluated under in vitro and in vivo conditions. The VOCs produced by the PUCV-VBL consortium showed the highest mycelial inhibition against Botrytis cinerea (86%). Furthermore, H. osmophila was able to inhibit sporulation of A. tubingensis and P. expansum. VOCs' effect in vivo was evaluated using berries from Red Globe, Thompson Seedless and Crimson Seedless grapes cultivars, demonstrating a mycelial inhibition by VOCs greater than 70% for all evaluated fungal species. The VOC identification of the PUCV-VBL consortium was analyzed by solid-phase microextraction coupled to gas chromatography-mass spectrometry (SPME-GCMS). A total 26 compounds were identified, including 1-butanol 3-methyl, propanoic acid ethyl ester, ethyl acetate, phenylethyl alcohol, isobutyl acetate and hexanoic acid ethyl ester. Our results show that VOCs are an important mode of action of the PUCV-VBL biological consortium"
Keywords:		bioantagonist biocontrol mycelial inhibition summer bunch rot table grapes volatile organic compounds;
Notes:		"PubMed-not-MEDLINEDelgado, Ninoska Olivera, Matias Cadiz, Fabiola Bravo, Guillermo Montenegro, Ivan Madrid, Alejandro Fuentealba, Claudia Pedreschi, Romina Salgado, Eduardo Besoain, Ximena eng Switzerland 2021/07/03 Antibiotics (Basel). 2021 Jun 1; 10(6):663. doi: 10.3390/antibiotics10060663"