Antifungal activity of Penicillium striatisporum Pst10 and its biocontrol effect on Phytophthora root rot of chilli pepper

文献类型： 外文期刊

第一作者： Ma, Yan

作者： Ma, Yan;Zhou, Ming-guo;Ma, Yan;Chang, Zhi-zhou;Zhao, Jiang-tao

作者机构：

关键词： Penicillium striatisporum;Phytophthora capsici;antagonistic mechanism;biocontrol;BIOLOGICAL-CONTROL;MONILINIA-LAXA;FUSARIUM-WILT;TRICHODERMA-HARZIANUM;MYCOPHENOLIC-ACID;TOMATO WILT;OXALICUM;BLIGHT;FREQUENTANS;METABOLITE

期刊名称：BIOLOGICAL CONTROL （ 影响因子：3.687； 五年影响因子：3.962 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Penicillium striatisporum Pst10 was isolated from the rhizosphere of chilli peppers. In dual culture agar plate assays, this isolate showed very high antagonistic effects on mycelium growth of Phytophthora spp., Cladosporium cucumerium, and Sclerotinia sclerotiorum. In in vitro assays, the toxicity of sterilized liquid culture filtrates (SLCF) of Pst10 grown in potato-dextrose broth (PDB) was tested against Phytophthora capsici mycelium growth and sporangia/spore formation or germination. The SLCF completely inhibited mycelium growth and even at a 100-fold dilution led to abnormal mycelium. A 20-fold dilution of SLCF inhibited formation and germination of sporangia and spores. Three antifungal substances were separated by thin-layer chromatography (TLC) from organic solvent extracts of liquid culture filtrate of Pst10. Composted pig manure slightly increased the colonization of the chilli rhizosphere by Pst10. In pot tests, the incidence of Phytophthora root rot of chilli was significantly reduced when artificially infested soil was treated with conidia and SLCF of Pst10. (c) 2007 Elsevier Inc. All rights reserved.

分类号： Q81.3

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