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The present application relates to the field of microbial technology and wastewater treatment, and specifically discloses a Kodamaea ohmeri strain with azo dye degradation function and its application. The strain was preserved in the China General Microbiological Culture Collection Center on September 30, 2022, with the preservation number of CGMCC No. 25860. The strain is isolated from the soil of Dongzhaigang Mangrove Nature Reserve in Hainan, and has decolorization and degradation effects on azo dyes such as reactive black 5, reactive brilliant red K-2G, reactive brilliant red X-3B, and methyl orange. The strain can adapt to changes in a relatively wide range of environmental factors such as salinity, pH, and temperature, and has a certain tolerance to the concentration of representative disazo dye reactive black 5. This provides a possible source of yeast strains for the biodegradation of azo dyes, and has good theoretical research value and broad application prospects in the field.

This invention belongs to the field of microbial pesticides and discloses a highly effective Bacillus subtilis strain for killing spider mites and its applications. The Bacillus subtilis strain described in this invention has the preservation number CCTCC NO: M 20251959. Indoor bioassay data show that Bacillus subtilis NBIF-051 has high toxicity against major agricultural mites such as the two-spotted spider mite, the citrus red spider mite, and the cotton red spider mite. Pot experiments showed that after spraying the fermented broth of NBIF-051 for 7 days, the control efficacy against the two-spotted spider mite was 65.18%. Field trials showed that after spraying the fermented broth of this strain for 15 days, the control efficacy against the citrus red spider mite was 63.45%~76.85%, comparable to commercially available chemical acaricides. Furthermore, the acaricidal activity of the fermented broth of this strain exhibits certain tolerance to high temperatures and ultraviolet radiation, showing broad application prospects in agricultural production.