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Title: Exogenous trehalose enhanced the biocontrol efficacy of Hanseniaspora uvarum against grape berry rots caused by Aspergillus tubingensis and Penicillium commune

Journal Article · · Journal of the Science of Food and Agriculture
DOI:https://doi.org/10.1002/jsfa.8998· OSTI ID:1435468

Abstract BACKGROUND Primarily, chemical pesticides are commonly used to control preharvest and postharvest diseases of fruits and vegetables. However, there is strong public concern regarding the human and environmental health problems that might emanate from the residues of these chemical pesticides. As a result, biocontrol is often preferred due to its safety for humans and animals. The microbial antagonists employed often encounter variable climatic conditions, which affect their efficacy. In this study, the biocontrol efficacy of Hanseniaspora uvarum enhanced with trehalose against Aspergillus tubingensis and Penicillium commune in grapes was investigated. RESULTS H. uvarum Y3 pretreated with 2.0% w/v trehalose in nutrient yeast dextrose broth (NYDB) before used significantly inhibited the incidence of decay and lesion diameter without affecting the sensory qualities of the grapes stored at either 4 °C or 20 °C. There was also a significant ( P  < 0.05) increase in the population dynamics of H. uvarum that was pretreated with 2% trehalose compared to that of H. uvarum alone. The in vitro assay on spore germination revealed an inhibition of A. tubingensis and P. commune by 85.6% and 87.0% respectively. Scanning electron microscopy results showed that both untreated H. uvarum and H. uvarum pre‐treated with the 2% w/v trehalose before use inhibited fungal mycelium and development of grape rot. CONCLUSION The biocontrol efficacy of H. uvarum was enhanced against grape rot caused by A. tubingensis and P. commune . The findings indicate the potential applicability of trehalose in the enhancement of H. uvarum . © 2018 Society of Chemical Industry

Sponsoring Organization:
USDOE
OSTI ID:
1435468
Journal Information:
Journal of the Science of Food and Agriculture, Journal Name: Journal of the Science of Food and Agriculture Vol. 98 Journal Issue: 12; ISSN 0022-5142
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
United Kingdom
Language:
English
Citation Metrics:
Cited by: 24 works
Citation information provided by
Web of Science

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