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Brazilian Journal of Microbiology

versão impressa ISSN 1517-8382versão On-line ISSN 1678-4405

Resumo

SASTRE-AHUATZI, M. et al. Mycelial growth of strains of Pleurotus ostreatus developed on agar and its correlation with the productivity in pilot production farm. Braz. J. Microbiol. [online]. 2007, vol.38, n.3, pp.568-572. ISSN 1517-8382.  http://dx.doi.org/10.1590/S1517-83822007000300035.

Radial growth rate, intracellular laccases and proteases activities, and protein content were evaluated in five strains of Pleurotus ostreatus, grown on starch-based and glucose-based agar media containing different concentrations of the glucose analogue 2-deoxyglucose (2-DG). Productivity of the strains in pilot scale cultivation was also determined. The mycelium of four strains had approximately between 0.6- to 3-fold higher protein content when grown on glucose medium containing 0.01 g/L of 2-DG than when grown on glucose medium. The radial growth rate and intracellular laccases activity of some strains showed a positive and a negative correlation with the productivity, respectively. These results suggest that the strains with high radial growth rate and low intracellular laccases activity on glucose without 2-DG, on starch without 2-DG or on glucose containing 0.01 g/L of 2-DG are highly productive in pilot production farm.

Palavras-chave : Pleurotus ostreatus; 2-deoxyglucose; laccases activity; proteases activity; mushroom production.

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