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Ecology of cellulose decomposition by microfungi in the rhizosphere of mangrove plant community at the Ganges River Estuary in India

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Author Affiliations

  • 1Department of Botany, Chakdaha College, Chakdaha, Nadia, India
  • 2Department of Botany, Chakdaha College, Chakdaha, Nadia, India
  • 3Department of Plant Pathology, B.C.K.V., Kalyani, Nadia, India

Int. Res. J. Environment Sci., Volume 7, Issue (3), Pages 17-24, March,22 (2018)

Abstract

Cellulose decomposition in the tropical mangrove plant community’s successional stages at the estuary of Ganges river in India was estimated by Carboxymethyl Cellulose (CMC) and crude cellulose degradation assay and the cellulolytic fungi from rhizosphere soils mangrove plants were enumerated and identified. Crude cellulose degradative ability by measurement of respiratory loss of cellulose carbon revealed moderate to high activity. Among seven high decomposer isolates Trichoderma koningii showed exceptionally high crude cellulolytic (C1) ability. Although Penicillium funiculosum, Aspergillus flavus and A. versicolor had comparatively low activity for crude cellulose decomposition, they had shown a higher cellulose utilization efficiency. Cellulolytic activity of fungi appeared to be negatively correlated with increasing concentrations of salinity of the medium. A significant high proportion of the total population of fungi of the soils of the successional stages were cellulose decomposers. The isolates vary for their decomposing abilities.

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