Alterations in volatile metabolites profile of fresh tomatoes in response to Alternaria alternata (Fr.) Keissl. 1912 infection

ABSTRACT Alternaria alternata (Fr.) Keissl. 1912 is one of the main fungal pathogens that infect tomato (Solanum lycopersicum L.) during cold storage affecting postharvest quality and marketing. During fungal infections, fruits and fungi release specific volatile metabolites (VM) that could alter th...

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Autores principales:	Encinas-Basurto,David, Valenzuela-Quintanar,María Isabel, Sánchez-Estrada,Alberto, Tiznado-Hernández,Martín Ernesto, Rodríguez-Félix,Armida, Troncoso-Rojas,Rosalba
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2017
Materias:	Volatile metabolites fresh tomatoes Alternaria alternata cold storage temperatures SPME-GC-MS.
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392017000300194
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spelling	oai:scielo:S0718-583920170003001942017-11-09Alterations in volatile metabolites profile of fresh tomatoes in response to Alternaria alternata (Fr.) Keissl. 1912 infectionEncinas-Basurto,DavidValenzuela-Quintanar,María IsabelSánchez-Estrada,AlbertoTiznado-Hernández,Martín ErnestoRodríguez-Félix,ArmidaTroncoso-Rojas,Rosalba Volatile metabolites fresh tomatoes Alternaria alternata cold storage temperatures SPME-GC-MS. ABSTRACT Alternaria alternata (Fr.) Keissl. 1912 is one of the main fungal pathogens that infect tomato (Solanum lycopersicum L.) during cold storage affecting postharvest quality and marketing. During fungal infections, fruits and fungi release specific volatile metabolites (VM) that could alter the fruit aroma, or could mediate resistance response in the fruit, or they also could suggest the possible status of fungal attack. The detection of the VM released during the tomato-Alternaria interaction could contribute to the development of ecofriendly and harmless strategies for its control. In this study, the profile of VM of fresh tomatoes inoculated with A. alternata, were analyzed by solid phase microextraction and gas chromatography-mass spectrometry (SPME-GC-MS) during storage at 15 and 20 °C for 48 h, respectively. Changes in the profile of VM were observed between control and inoculated fruit since the first few hour post-inoculation. Some VM (3-methyl-2-butenal, dimethyl disulfide, 1-butenol, hexanol, 2-methyl-1-butanol acetate, among others) were only detected in inoculated fruit, so they appear to be synthesized by the presence of the pathogen. Also, a marked increase of 3-methyl-1-butanol and 6-methyl-5-hepten-1-one were observed in inoculated fruit, and they were progressive over time particularly at 20 °C. In conclusion, A. alternata induced changes in the profile of volatile metabolites released by tomato fruit. Some of the VM released during tomato-A. alternata interaction, were synthesized or stimulated by the fungal attack. These results contribute to the current knowledge about the profile of VM released during the fruit-pathogen interaction.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.77 n.3 20172017-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392017000300194en10.4067/S0718-58392017000300194
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Volatile metabolites fresh tomatoes Alternaria alternata cold storage temperatures SPME-GC-MS.
spellingShingle	Volatile metabolites fresh tomatoes Alternaria alternata cold storage temperatures SPME-GC-MS. Encinas-Basurto,David Valenzuela-Quintanar,María Isabel Sánchez-Estrada,Alberto Tiznado-Hernández,Martín Ernesto Rodríguez-Félix,Armida Troncoso-Rojas,Rosalba Alterations in volatile metabolites profile of fresh tomatoes in response to Alternaria alternata (Fr.) Keissl. 1912 infection
description	ABSTRACT Alternaria alternata (Fr.) Keissl. 1912 is one of the main fungal pathogens that infect tomato (Solanum lycopersicum L.) during cold storage affecting postharvest quality and marketing. During fungal infections, fruits and fungi release specific volatile metabolites (VM) that could alter the fruit aroma, or could mediate resistance response in the fruit, or they also could suggest the possible status of fungal attack. The detection of the VM released during the tomato-Alternaria interaction could contribute to the development of ecofriendly and harmless strategies for its control. In this study, the profile of VM of fresh tomatoes inoculated with A. alternata, were analyzed by solid phase microextraction and gas chromatography-mass spectrometry (SPME-GC-MS) during storage at 15 and 20 °C for 48 h, respectively. Changes in the profile of VM were observed between control and inoculated fruit since the first few hour post-inoculation. Some VM (3-methyl-2-butenal, dimethyl disulfide, 1-butenol, hexanol, 2-methyl-1-butanol acetate, among others) were only detected in inoculated fruit, so they appear to be synthesized by the presence of the pathogen. Also, a marked increase of 3-methyl-1-butanol and 6-methyl-5-hepten-1-one were observed in inoculated fruit, and they were progressive over time particularly at 20 °C. In conclusion, A. alternata induced changes in the profile of volatile metabolites released by tomato fruit. Some of the VM released during tomato-A. alternata interaction, were synthesized or stimulated by the fungal attack. These results contribute to the current knowledge about the profile of VM released during the fruit-pathogen interaction.
author	Encinas-Basurto,David Valenzuela-Quintanar,María Isabel Sánchez-Estrada,Alberto Tiznado-Hernández,Martín Ernesto Rodríguez-Félix,Armida Troncoso-Rojas,Rosalba
author_facet	Encinas-Basurto,David Valenzuela-Quintanar,María Isabel Sánchez-Estrada,Alberto Tiznado-Hernández,Martín Ernesto Rodríguez-Félix,Armida Troncoso-Rojas,Rosalba
author_sort	Encinas-Basurto,David
title	Alterations in volatile metabolites profile of fresh tomatoes in response to Alternaria alternata (Fr.) Keissl. 1912 infection
title_short	Alterations in volatile metabolites profile of fresh tomatoes in response to Alternaria alternata (Fr.) Keissl. 1912 infection
title_full	Alterations in volatile metabolites profile of fresh tomatoes in response to Alternaria alternata (Fr.) Keissl. 1912 infection
title_fullStr	Alterations in volatile metabolites profile of fresh tomatoes in response to Alternaria alternata (Fr.) Keissl. 1912 infection
title_full_unstemmed	Alterations in volatile metabolites profile of fresh tomatoes in response to Alternaria alternata (Fr.) Keissl. 1912 infection
title_sort	alterations in volatile metabolites profile of fresh tomatoes in response to alternaria alternata (fr.) keissl. 1912 infection
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2017
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392017000300194
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_version_	1714205369633341440

Alterations in volatile metabolites profile of fresh tomatoes in response to Alternaria alternata (Fr.) Keissl. 1912 infection

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