Biological characteristics of Trichoderma rossicum strain GAU 1-X-2

The biological characteristics of Trichoderma rossicum strain GAU 1-X-2 were examined using different carbon and nitrogen sources, pH, temperature, and other factors. The results indicated that T. rossicum could grow under temperatures of 10-35 ℃ and pH of 5.0-12.0, with optimal conditions of 20 ℃ and pH 7.0, although the highest sporulation occurred at pH 8.0. Mannitol was the optimum carbon source for hypha growth, but dextrose was the best for spore production. Peptone was the optimum nitrogen source for mycelia, but conidiophores were not observed after six days in the seven nitrogen sources. The best mycelia growth and the largest sporulation occurred with 24 h of darkness. The lethal spore temperature was 68 ℃ for 10 min.