期刊
BIOCONTROL
卷 66, 期 4, 页码 547-558出版社
SPRINGER
DOI: 10.1007/s10526-021-10088-5
关键词
Apples; Biocontrol; Blue mold decay; Penicillium expansum; Wickerhamomyces anomalus
类别
资金
- Research Fund for International Young Scientists, National Natural Science Foundation of China [31950410556]
- State Key Laboratory of Crop Biology in Shandong Agricultural University [2020KF08]
- Practical Innovation Training Program for College Students of Jiangsu University [202010299404X]
The study showed that W. anomalus significantly reduced postharvest blue mold decay of apples without affecting fruit quality. In addition, W. anomalus inhibited spore germination and germ tube elongation of the fungus, as well as induced the activity of enzymes and increased the content of compounds in apples, leading to effective control of blue mold decay.
Blue mold decay is the one of most important postharvest disease of apples caused by the fungus, Penicillium expansum. This study aimed to investigate the biocontrol efficacy of the yeast, Wickerhamomyces anomalus, on postharvest blue mold decay of apples and the relative defense mechanisms. The results indicated that W. anomalus could significantly reduce the blue mold decay of apples, and the maximum inhibition was obtained when the concentration of W. anomalus was 1 x 10(8) cells ml(-1). Furthermore, W. anomalus significantly reduced the fruit decay under ambient conditions, without generating any change in fruit quality. In vitro experiments showed that W. anomalus greatly inhibited the spore germination and germ tube elongation of P. expansum. Besides, its ease of adaptation, stable growth and potential colonization of in apple wounds or surfaces indicated that W. anomalus could compete with P. expansum for nutrients and space, leading to considerable inhibition blue mold decay. W. anomalus significantly induced the activities of polyphenol oxidase (PPO), peroxidase (POD), catalase (CAT), phenylalanine ammonia-lyase (PAL), and ascorbate peroxidase (APX) in apples. Moreover, W. anomalus increased the contents of flavonoid and total phenols. All these results suggested that W. anomalus has potential biocontrol efficacy to control the postharvest blue mold decay of apples
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