NITROGEN ENRICHMENT OF STRAW COMPOST ASSOCIATED WITH GROWTH OF PLEUROTUS MUSHROOM by A. SENGUPTA1, A. ROY CHOWDHURY2 AND S CHAUDHURI 3

Authors

  • *A. SENGUPTA1, A. ROY CHOWDHURY2 AND S CHAUDHURI 3

Keywords:

Pleurotus mushroom, Nitrogen fixation, Bioconversion

Abstract

Pleurotus is one edible wood rotting fungus artificially cultivated in cereal straw for production of protein rich mushroom fruit bodies. Average protein content of straw-grown Pleurotus mushrooms range between 25-30% of dry weight. Protein yield from high C/N ratio cereal straw composted with Pleurotus does not equivalence with nitrogen content of unsupplemented straw on per unit weight basis. We present here evidence of diazotrophic nitrogen fixation during 50-day growth of Pleurotus citrinopileatus in rice straw compost timed with spawn run to fruit body production. P. citrinopileatus grown straw compost, simultaneous to loss in dry weight during 50-day incubation period showed incremental values of nitrogenase activity measured as acetylene reduction activity. There was a parallel increase in the population of nitrogen fixing bacteria as indicated by bacterial colony counts of composted straw in nitrogen-less specific nutrient medium. Pleuorotus, during its growth on straw breaks down hemicellulose, cellulose and lignin to liberate sugars that allow substantial growth of straw-associated nitrogen fixing bacteria in the moist, micro-aerophilic environment of the compost. Nitrogen fixed by the bacteria is utilized by the fungus to yield protein rich mycelium and fruit body in one of the most outstanding prokaryote-eukaryote bioconversion systems of nature.

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Author Biography

*A. SENGUPTA1, A. ROY CHOWDHURY2 AND S CHAUDHURI 3

*A. SENGUPTA1, A. ROY CHOWDHURY2  AND

S CHAUDHURI 3
1,2 DEPARTMENT OF BOTANY, CHAKDAHA COLLEGE, CHAKDAHA , NADIA.
3 EX - PROFESSOR AND HEAD, DEPARTMENT OF PLANT PATHOLOGY, B.C.K.V., MOHANPUR, NADIA, WEST BENGAL 741252, INDIA.

Corresponding author’s e-mail: ananya.chakdaha1@gmail.com

References

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Published

2020-10-08

How to Cite

S CHAUDHURI 3, *A. S. A. R. C. . A. . . (2020). NITROGEN ENRICHMENT OF STRAW COMPOST ASSOCIATED WITH GROWTH OF PLEUROTUS MUSHROOM by A. SENGUPTA1, A. ROY CHOWDHURY2 AND S CHAUDHURI 3. LIFE SCIENCES LEAFLETS, 128, 28-34. Retrieved from https://petsd.org/ojs/index.php/lifesciencesleaflets/article/view/1550