مقاله ۲۰۱۲: تاثیر کمپوست مصرفی قارچ روی Lecanicillium fungicola

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The effect of spent mushroom compost on Lecanicillium fungicola in vivo and in vitro

Hossein Riahi^a, Mehrnaz Hashemi^a* & Kasra Sharifi^b

Leached spent mushroom compost (SMC) and its extract were tested to suppress Lecanicillium fungicola in white button mushroom. Sterile and non-sterile mixture of SMC and peat were used to assess suppressiveness against L. fungicola in greenhouse experiments. The extract of SMC was prepared with sterile, non-sterile, filtered, supplied with nystatin, streptomycin and penicillin antibiotics to evaluate their effect in suppression of pathogen in vitro. Isolated bacteria from SMC extract were tested for antagonism rate against Lecanicillium fungicola. The results of the experiments showed that all applications rate of none-sterile SMC were effective in control of pathogen. However, the sterile SMC amendments did not have a positive effect on the pathogen suppression in vitro or in vivo, as was expected. The treatments amended with SMC 100% and 60% showed the most suppressive effect in the control of pathogen. Using of non-sterile SMC 20%, 40%, 60% and peat soil were most effective in mushroom yield. The extract of leached SMC showed inhibition of L. fungicola in petri dishes. Three bacteria isolated from extract, Bacillus subtilis, Bacillus licheniformis and Bacillus amyloliquefacien identified using 16s rRNA, showed an antagonistic effect with the fungal growth.