Cultivable mushroom growth-promoting bacteria and their impact on Agaricus blazei productivity

Pesquisa Agropecuária Brasileira

Li-sen Young²  Jiunn-nan Chu¹  Asif Hameed¹  Chiu-chung Young¹ 

[1] ,National Formosa University Department of Biotechnology ,Taiwan

关键词: Agaricus blazei;    bioprospecting;    fresh mushroom yield;    polysaccharide-protein complex;    Agaricus blazei;    bioprospecção;    produção de cogumelos frescos;    complexo polissacarídeo-proteínas;   

DOI  :  10.1590/S0100-204X2013000600009

来源: SciELO

【 摘 要 】

The objective of this work was to identify growth-promoting bacteria isolated from Agaricus blazei and to evaluate their effect on mushroom mycelial growth and productivity. A total of 56 A. blazei-associated bacterial isolates were obtained from casing soil and identified by 16S rRNA gene sequencing. Bacteria were evaluated as to phosphate-solubilization ability, nitrogen-fixation capability, and secretion of cellulase. Superior isolates were tested for their to effect on A. blazei productivity, micelial growth, and on the contents of the polysaccharide-protein complex and of N, P, K, Ca, and Mg. Bacterial isolates were identified as actinobacteria (60%), firmicutes (20%), and proteobacteria (20%). Among them, ten isolates had phosphate-solubilization ability, eight showed nitrogen-fixation capability, and 12 isolates promoted A. blazei mycelium growth. Bacterial inoculation reduces time till harvest in up to 26 days, increases fresh mushroom yield up to 215%, and increases total polysaccharide-protein complex content twofold when compared to the non-inoculated control. The actinobacteria group is the predominant A. blazei-associated phylum.

【 授权许可】

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