Inhibition of plant pathogens in vitro and in vivo with essential oil and organic extracts of Cestrum nocturnum L
2010
Al-Reza, Sharif M. | Rahman, Atiqur | Ahmed, Yunus | Kang, S. C (Sun Chul)
The efficacy of the essential oil and various organic extracts from flowers of Cestrum nocturnum L. was evaluated for controlling the growth of some important phytopathogenic fungi. The oil (1000 ppm) and the organic extracts (1500 μg/disc) revealed antifungal effects against Botrytis cinerea, Colletotrichum capsici, Fusarium oxysporum, Fusarium solani, Phytophthora capsici, Rhizoctonia solani and Sclerotinia sclerotiorum in the growth inhibition range of 59.2–80.6% and 46.6–78.9%, respectively, and their MIC values were ranged from 62.5 to 500 and 125 to 1000 μg/mL. The essential oil had a remarkable effect on spore germination of all the plant pathogens with concentration and time-dependent kinetic inhibition of P. capsici. Further, the oil displayed remarkable in vivo antifungal effect up to 82.4–100% disease suppression efficacy on greenhouse-grown pepper plants. The results obtained from this study may contribute to the development of new antifungal agents to protect the crops from fungal diseases.
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