Fungal community structure in phase Ⅱ composting of Volvariella volvacea

Abstract:

Abstract:［Objective］ To understand the fungal community succession during the phase Ⅱ of Volvariella volvacea compost and clarify the predominant fungi in different fermentation stages，to monitor the dynamic compost at the molecular level accurately and quickly，and reveal the mechanism．［Methods］ The 18S rDNA-denaturing gradient gel electrophoresis (DGGE) and sequencing methods were used to analyze the fungal community structure during the course of compost．［Results］The DGGE profile shows that there were differences in the diversity of fungal community with the fermentation progress．The diversity was higher in the stages of high temperature．And the dynamic changes of predominant community and relative intensity was observed． Among the 20 predominant clone strains，9 were unknown eukaryote and fungi， the others were Eurotiales，Aspergillus sp.，Melanocarpus albomyces，Colletotrichum sp.，Rhizomucor sp.，Verticillium sp.，Penicillium commune，Microascus trigonosporus and Trichosporon lactis．The 14 clone strains were detected in the stages of high and durative temperature.［Conclusion］The fungal community structure and predominant community have taken dynamic succession during the phase Ⅱ of Volvariella volvacea compost.

Key words:Keywords: Volvariella volvacea， phase Ⅱ of compost， fungal community， 18S rDNA-denaturing gradient gel electrophoresis