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Application of Osthol Induces a Resistance Response Against Powdery Mildew in Pumpkin Leave
Department of Plant Protection of Nanjing Agricultural University, Nanjing210095, China
Food Safety institute, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
Institute of Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
* Author to whom correspondence should be addressed.
Received: 30 May 2007; in revised form: 20 August 2007 / Accepted: 6 September 2007 / Published: 14 September 2007
Abstract: Plants can defend themselves against fungal infection by natural means inducedby biotic and abiotic elicitors. Osthol is a natural compound extracted from dried fruits ofCnidii Monnieri Fructus. In this study, it has been shown to not only be a fungicide withacceptable curative properties (control efficacy of 68.72), but it also showed a significantprophylactic effect (with control efficacy of 77.36) against pumpkin powdery mildew at aconcentration of 100 μg·mL-1. In pumpkin leaves with/or without inoculation ofSphaerotheca fuliginea, osthol treatment induced the accumulation of chitinase andperoxidase and enhanced the transcription of chitinase gene in non-inoculated leaves. Thepotentiation of phenylalanine amonia-lyase activity in leaves by osthol application andfollowing inoculation was absent in that with inoculation or osthol treatment, indicatingthat induced PAL in osthol-pretreated plants was inoculation-mediated. In conclusion, thisnatural compound could induce resistance response in the plant against powdery mildew.
Keywords: Osthol; coumarinic compound; induced resistance response; Cucurbita moschata; Sphaerotheca fuliginea; chitinase; POD; PAL
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MDPI and ACS Style
Shi, Z.; Wang, F.; Zhou, W.; Zhang, P.; Fan, Y.J. Application of Osthol Induces a Resistance Response Against Powdery Mildew in Pumpkin Leave. Int. J. Mol. Sci. 2007, 8, 1001-1012.
Shi Z, Wang F, Zhou W, Zhang P, Fan YJ. Application of Osthol Induces a Resistance Response Against Powdery Mildew in Pumpkin Leave. International Journal of Molecular Sciences. 2007; 8(9):1001-1012.
Shi, Zhiqi; Wang, Fei; Zhou, Wei; Zhang, Peng; Fan, Yong J. 2007. "Application of Osthol Induces a Resistance Response Against Powdery Mildew in Pumpkin Leave." Int. J. Mol. Sci. 8, no. 9: 1001-1012.