首页> 中文期刊> 《成都医学院学报》 >Identification and Antagonism Study of a Novel Chitinase-producing Bacterium Burkholderia Sp.C3 against Phytopathogenic Fungi

Identification and Antagonism Study of a Novel Chitinase-producing Bacterium Burkholderia Sp.C3 against Phytopathogenic Fungi

         

摘要

Through a modified agar well diffusion assay, antagonism of a novel chitinase-producing strain C3 against the phytopathogenic fungi including Phoma wasabiae Yokogi,Heterostrophus, Exserohilum Turcicum, Curwularia (Walk) Boed, Thantephorus cucumris, Fusarium graminearum was tested. The data showed that the crude cxtracts of strain C3 had stable antifungal activity in the range of pH 5.0 to pH 8.0. The active components were heat labile and sensitive to proteinase K. A series of experiments supported that the compound responsible for inhibitory activity appeared to be ehitinase. The 16s rDNA analysis indicated that C3 was subject to genus Burkholderia. Pbenotypic characterization of C3 was also consisted with the result of molecular identification.

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