The invention relates to an
Aspergillus niger strain ANUV90 obtained through
induced mutation, which has high and stable resistance for
carbendazim. Compared with the resistance for
carbendazim of theinitial strain AN, the resistance for
carbendazim of the strain is increased by1000 times. The
Aspergillus niger strain ANUV90 can grow normally under the 1000 Mu g / mL treatment concentration of effective component of carbendazim. And the
fermentation broth of the strain has certain
nematode killing effects. No
significant difference of
colony morphology characteristic is detected between the strains before and after
induced mutation. And the strain has a certain
biological activity on the tomato root knot nematodes (Meloidogyne spp.). After analyzing the
molecular mechanism of the resistanceof the
mutant strain, the primary
research result shows that the site directed
mutation of Beta-
tubulin encoding
gene leads to the generation of the biological characteristic resistance of ANUV90. The
bacterial strain related to the invention is stored in China General
Microbiological Culture Collection Center on 30 October, 2007. And the preservation number of the strain is CGMCC No: M2234. Theclassification and
nomenclature of the strain is
Aspergillus niger. Due to the resistance characteristic, the strain can be mixed and applied with most common pesticides for the control and prevention of various harmful insects. The invention provides a way for solving the unstable
control effect problem in the biocontrol strain field, which has great application and development prospect.