Alternaria Spots in Tomato Leaves Differently Delayed by Four Plant Essential Oil Vapours

Jeum Kyu Hong; Yeon Sook Jo; Dong Hyun Ryoo; Ji Hwan Jung; Hyun Ji Kwon; Young Hee Lee; Seog Won Chang; Chang-Jin Park

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자료유형: 학술저널

저자정보: Jeum Kyu Hong (Gyeongnam National University of Science and Technology (GNTech)) Yeon Sook Jo (Gyeongnam National University of Science and Technology (GNTech)) Dong Hyun Ryoo (Gyeongnam National University of Science and Technology (GNTech)) Ji Hwan Jung (Gyeongnam National University of Science and Technology (GNTech)) Hyun Ji Kwon (Gyeongnam National University of Science and Technology (GNTech)) Young Hee Lee (Gyeongnam National University of Science and Technology (GNTech)) Seog Won Chang (Korea Golf University) Chang-Jin Park (Sejong Univerity)

저널정보: 한국식물병리학회 Research in Plant Disease(식물병연구) Research in Plant Disease(식물병연구) 제24권 제4호

발행연도: 2018.12

수록면: 292 - 301 (10page)

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Alternaria leaf spot disease has been a concern during a tomato production in greenhouse. In vitro antifungal activities of vapours of four plant essential oils, cinnamon oil, fennel oil, origanum oil and thyme oil, were investigated during in vitro conidial germination and mycelial growth of Alternaria alternata causing the tomato leaf spots to find eco-friendly alternatives for chemical fungicides. The four plant essential oils showed different antifungal activities against in vitro conidial germination of A. alternata in dose-dependent manners, and cinnamon oil vapour was most effective to suppress the conidial germination. The four plant essential oils showed similar antifungal activities against the in vitro mycelial growth of A. alternata in dose-dependent manners, but low doses of thyme oil vapour slightly increased in vitro mycelial growth of A. alternata. Necrotic lesions on the A. alternata-inoculated tomato leaves were reduced differently depending on kinds and concentrations of plant essential oils. Delayed conidial germination and germ-tube elongation of A. alternata were found on the tomato leaves treated with cinnamon oil and origanum oil vapours at 6 hpi. These results suggest that volatiles from cinnamon oil and origanum oil can be provided as alternatives to manage Alternaria leaf spot during the tomato production eco-friendly.

#Alternaria alternata #Disease management #Eco-Friendly #Plant essential oil vapour #Tomato

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