Selecting Fungi Which Can Induce Tobacco Creating Systemic Resistance against Tobacco Mosaic Virus

fungi could produce a large number of metabolites, which can activate the expression of relevant enzymes in tobacco, which will induce tobacco creating systemic resistance and help against tobacco virus.We have selected 38 kinds of pathogenic fungi and 45 kinds of fungi separated from the tobacco leaf and the soil of enshi, xiangfan through the experiments of allergic reaction and systemic resistance. There are 32 fungi which can produce hypersensitive response, and 16 of them can inhibit against tobacco mosaic virus. Among these fungi, the highest ability of resistance to tobacco mosaic virus are Colletotrichum camelliae, Verticillium dahliae, esf-13, esf-3, Fusarium graminearum, Rhizoctonia solani, E1, esf-6 and xfpf-6. The percentage of lesion inhibition are greater than 70%,with a highest inhibition rate at 96.44%. These fungi with high activity will be used as resistance inducer against tobacco virus.