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Application of osthol induces a resistance response against powdery mildew in pumpkin leaves

文献类型： 外文期刊

作者： Shi, Zhiqi 1 ; Wang, Fei 2 ; Zhou, Wei 2 ; Zhang, Peng 2 ; Fan, Yong Jian 2 ;

作者机构： 1.Nanjing Agr Univ, Dept Plant Protect, Nanjing 210095, Peoples R China

2.Nanjing Agr Univ, Dept Plant Protect, Nanjing 210095, Peoples R China; Jiangsu Acad Agr Sci, Food Safety Inst, Nanjing 210014, Peoples R China; Jiangsu Acad Agr Sci, Inst Biotechnol, Nanjing 210014, Peoples R China

关键词： osthol;coumarinic compound;induced resistance response;Cucurbita moschata;Sphaerotheca fuliginea;chitinase;POD;PAL

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.923； 五年影响因子：6.132 ）

ISSN： 1422-0067

年卷期： 2007 年 8 卷 9 期

页码：

收录情况： SCI

摘要： Plants can defend themselves against fungal infection by natural means induced by biotic and abiotic elicitors. Osthol is a natural compound extracted from dried fruits of Cnidii Monnieri Fructus. In this study, it has been shown to not only be a fungicide with acceptable curative properties ( control efficacy of 68.72), but it also showed a significant prophylactic effect ( with control efficacy of 77.36) against pumpkin powdery mildew at a concentration of 100 mu g center dot mL(-1). In pumpkin leaves with/ or without inoculation of Sphaerotheca fuliginea, osthol treatment induced the accumulation of chitinase and peroxidase and enhanced the transcription of chitinase gene in non- inoculated leaves. The potentiation of phenylalanine amonia- lyase activity in leaves by osthol application and following inoculation was absent in that with inoculation or osthol treatment, indicating that induced PAL in osthol- pretreated plants was inoculation- mediated. In conclusion, this natural compound could induce resistance response in the plant against powdery mildew.

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[1]Efficacy of osthol, a potent coumarin compound, in controlling powdery mildew caused by Sphaerotheca fuliginea. Wang, Chun-Mei,Zhou, Wei,Li, Cai-Xia,Chen, Hao,Shi, Zhi-Qi,Fan, Yong-Jian. 2009

[2]Fusarium graminearum growth inhibition due to glucose starvation caused by osthol. Shi, Zhiqi,Shen, Shouguo,Zhou, Wei,Wang, Fei,Fan, Yongjian. 2008

[3]Physiological Responses of Watermelon Grafted onto Bottle Gourd to Fusarium oxysporum f. sp niveum Infection. Zhang, M.,Yang, X. P.,Xu, J. H.,Liu, G.,Yao, X. F.,Li, P. F.. 2015

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