« Previous Abstract"Iridium-catalyzed asymmetric hydrogenation of unfunctionalized, trialkyl-substituted olefins"    Next AbstractEmission of volatile organic compounds from yellow onion (Allium cepa L.) bulbs during storage »

Fungal Biol

Title:		Discriminant analysis of volatile organic compounds of Fusarium oxysporum f. sp. cepae and Fusarium proliferatum isolates from onions as indicators of fungal growth
Author(s):		Wang A; Haapalainen M; Latvala S; Edelenbos M; Johansen A;
Address:		"Department of Food Science, Aarhus University, Kirstinebjergvej 10, 5792, Aarslev, Denmark. Department of Agricultural Sciences, University of Helsinki, Latokartanonkaari 7, 00014, Helsinki, Finland. Natural Resources, Natural Resources Institute Finland (Luke), Tietotie 4, 31600, Jokioinen, Finland. Department of Environmental Science, Aarhus University, Frederiksborgvej 399, 4000, Roskilde, Denmark. Electronic address: ajo@envs.au.dk"
Journal Title:		Fungal Biol
Year:		2018
Volume:		20180719
Issue:		10
Page Number:		1013 - 1022
DOI:		10.1016/j.funbio.2018.07.005
ISSN/ISBN:		1878-6146 (Print)
Abstract:		"Basal rot is a common onion disease and is mainly caused by Fusarium oxysporum f. sp. cepae and Fusarium proliferatum. To study the possibility of using volatile organic compounds (VOCs) as biomarkers for these fungi, pathogenic isolates of F. oxysporum and F. proliferatum from onions were cultivated in onion medium and VOCs were measured by solid phase microextraction (SPME). Forty-two compounds were detected, and thirty of these compounds were highly related to fungal metabolic activity. Allyl mercaptan was specific to F. oxysporum isolate Fox006. Analysis of the VOCs showed significant differences between the two species and among different isolates within the same species. Sixteen of the VOCs showed were highly positively correlated with the fungal biomass estimated by real-time polymerase chain reaction (PCR). Ethanol, ethyl formate, ethyl acetate, 2-methyl-1-propanol, methyl thioacetate, n-propyl acetate and 3-methyl-1-butanol are volatile metabolites that were potential indicators of Fusarium growth on onions"
Keywords:		Biomarkers/analysis Discriminant Analysis Fusarium/*chemistry/isolation & purification Onions/*microbiology Plant Diseases/*microbiology Solid Phase Microextraction/methods Volatile Organic Compounds/*analysis Biomarker Gas chromatography-mass spectrometr;
Notes:		"MedlineWang, Aimei Haapalainen, Minna Latvala, Satu Edelenbos, Merete Johansen, Anders eng Research Support, Non-U.S. Gov't Netherlands 2018/09/20 Fungal Biol. 2018 Oct; 122(10):1013-1022. doi: 10.1016/j.funbio.2018.07.005. Epub 2018 Jul 19"