期刊
POSTHARVEST BIOLOGY AND TECHNOLOGY
卷 126, 期 -, 页码 15-22出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.postharvbio.2016.11.015
关键词
Table grapes; Talaromyces rugulosus; Biocontrol; Yarrowia lipolytica; Mechanism of action
资金
- National Key Research and Development Program of China [2016YFD0400902]
- National Natural Science Foundation of China [31271967, 31571899]
- Technology Support Plan of Jiangsu Province [BE2014372]
- Technology Support Plan of Zhenjiang [NY2013004]
- Graduate Innovative Projects of Jiangsu Province [KYLX_1069]
Biological control of pathogens using biocontrol agents has been document to be an effective and safe method for managing postharvest diseases. A better understanding of the mode of action of postharvest biocontrol agents on fruit surfaces, is critical for the advancement of successful implementation of postharvest biocontrol products. We investigated the biocontrol efficacy of Yarrowia lipolytica against the postharvest decay of table grapes caused by Talaromyces rugulosus and the possible mechanisms involved. Y. lipolytica significantly decreased the decay incidence of the treated grape berries compared to the untreated control. The response of T. rugulosus to different components of Y lipolytica indicated that only the yeast cells exhibited inhibitory effect on fungal mycelium, while extracellular metabolites did not show any significant effect on T. rugulosus. The in vitro experiment showed that Y lipolytica significantly inhibited spores germination and lesion diameter caused by T. rugulosus. We observed that the grape wounds were rapidly colonized by the antagonistic yeast at 25 degrees C and 4 degrees C. Thirty-five differential proteins were identified in T. rugulosus out of which 31 were down-regulated. Majority of the down-regulated proteins were related to basic metabolism, which suggested that the basic metabolism of T. rugulosus was suppressed. (C) 2016 Elsevier B.V. All rights reserved.
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