Effect of edible fungus residue on the ecological characteristics of microorganism fatty acids in the rhizosphere of ryegrass

The present study dealt with the effect of the edible fungus residue on the ecological characteristics of microorganism fatty acids in the rhizosphere of ryegrass. The phospholipid fatty acids (PLFAs) of the soil samples were detected by GC of Agilent 6890N. Pattern, content and structure of the microbial PLFAs in ryegrass rhizosphere were evaluated. The results showed that the types and content of microbial PLFAs in the rhizosphere of ryegrass adding edible fungus residue were higher than those in the control. In further, the microbial population structure could be changed due to improving the growth of bacteria, fungi and actinomycetes by the treatments with adding edible fungus residue. The edible fungus residue could increase the microbial community diversity in the soil, in which, the enhancement of Shannon-Wiener index of community dominance, Simpson index of community abundance and Pielou index of uniformity was revealed. It was guessed that the quality of rhizosphere soil could be improved by adding edible fungus residue.