Identification of Dominant Postharvest Pathogens of Blueberry Fruit and Antifungal Activity of Cinnamon Oil against Them

doi:10.7506/spkx1002-6630-20181029-338

Abstract

Abstract: This study aimed to identify the main postharvest pathogens of blueberry fruit grown in Taian, Shandong province. The pathogenic strains were isolated and purified from naturally rotten fruit of the ‘Wanfeng’ cultivar, and they were identified by traditional fungal morphology and rDNA-ITS sequence analysis. Besides, the in vitro antifungal activity of cinnamon oil was assessed against the strains. The results showed that these strains were identified as Fusarium oxysporum, Alternaria alternate and Botrytis cinerea, respectively. Cinnamon oil exhibited obvious antifungal effects on the strains with minimal inhibitory concentrations of 60, 30 and 30 μL/L, respectively. Moreover, scanning electron microscopic observation showed that the mycelial morphology of all the strains was seriously damaged after being treated with cinnamon oil and the cell surface became sunken, shrunk and uneven compared to the untreated control.

Key words: blueberry, postharvest pathogen, isolation and identification, cinnamon oil, antifungal effect

CLC Number:

S663.9

WANG Dan, ZHANG Jing, JIA Xiaoman, XIN Li, ZHAI Hao. Identification of Dominant Postharvest Pathogens of Blueberry Fruit and Antifungal Activity of Cinnamon Oil against Them[J]. FOOD SCIENCE, 2019, 40(24): 167-172.

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Identification of Dominant Postharvest Pathogens of Blueberry Fruit and Antifungal Activity of Cinnamon Oil against Them

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