Advance in application of chitinase produced by microbes in controlling plant diseases and insect pests were introduced, especially the synergist function of alkaline chitinases produced by microbes in controlling the diseases and.

The results showed that the formation of VA mycorrhiza in cotton roots by VA mycorrhizal fungus (VAMF) Clomus mosseae induced the increments of soil chitinase activity and numbers of chitin-decomposing microorganisms in mycorrhisosphere soil, and the incrementS were directly proportional to the mycorrhizal infection level.

Application of chitin-degrading microorganisms to biocontrol of Rhizoctonia solani;

Counting of the microbes in rhizospheric soil of tomato(Lycopersicon esculentum Miller)from a pot experiment in this study showed that total numbers of bacteria,fungi,actinomycetes and chitinase producing bacteria(CPB)in the mycorrhizospheric soil with inoculation of arbuscular mycorrhizal(AM)fungus Glomus caledonium were significantly higher than those in non-inoculation rhizospheric soil.