Ecology of cellulose decomposition by microfungi in the rhizosphere of mangrove plant community at the Ganges River Estuary in India
- 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)
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.
- Thatoi H.N. and Biswal A.K. (2008)., Mangroves of Orissa Coast: floral diversity and conservation status., Special habitats and threatened plants of India, ENVIS Wild Life and Protected Area, 11(1), 201-207.
- Zhang Y., Dong J., Yang B., Ling J., Wang Y. and Zhang S.I. (2009)., Bacterial community structure of mangrove sediments in relation to environmental variables accessed by 16S rRNA gene-denaturing gradient gel electrophoresis fingerprinting., Scientia Marina, 73(3), 487-498.
- Alongi D.M., Christoffersen P. and Tirendi F. (1993)., The influence of forest type on microbial-nutrient relationships in tropical mangrove sediments., Journal of Experimental Marine Biology and Ecology, 171(2), 201-223.
- Holguin G., Vazquez P. and Bashan Y. (2001)., The role of sediment microorganisms in the productivity, conservation, and rehabilitation of mangrove ecosystems: an overview., Biology and fertility of soils, 33(4), 265-278.
- Hodson R.E., Benner R. and Maccubbin A.E. (1983)., Transformations and fate of lignocellulosic detritus in marine environments., John Wiley and Sons Inc., New York, 185-195.
- Sarkanen K.V. and Ludwig C.H. (1971)., Lignins. Occurrence, Formation, Structure and Reactions., John Wiley and Sons Inc., New York, 1-916. 10:0471754226.
- Benner R., Moran M.A. and Hodson R.E. (1986)., Biogeochemical cycling of lignocellulosic carbon in marine and freshwater ecosystems: relative contributions of procaryotes and eucaryotes., Limnology and Oceanography, 31(1), 89-100.
- Cowling E.B. (1975)., Physical and chemical constraints in the hydrolysis of cellulose and lignocellulosic materials., Biotechnology and bioengineering symposium, 5, 163-181.
- Raghukumar S., Sharma S., Raghukumar C., Sathe-Pathak V. and Chandramohan D. (1994)., Thraustochytrid and fungal component of marine detritus. IV. Laboratory studies on decomposition of leaves of the mangrove Rhizophora apiculata Blume., Journal of experimental marine biology and ecology, 183(1), 113-131.
- Rajendran N. (1997)., Studies on mangrove–associated prawn seed resources of the Pichavaram, Southeast Coast of India., Indian J. Mar. Sci., 24, 233-235.
- Fell J.W. and Newell S.Y. (1981)., Role of fungi in carbon flow and nitrogen immobilization in coastal marine plant litter systems., The fungal community, its organization and role in the ecosystem. Dekker, New York, 665-678.
- Ghosh A., Dey N., Bera A., Tiwari A., Sathyniranjan K.B., Chakraborty K. and Chattapadhyay D. (2010)., Culture independent molecular analysis of bacterial communities in the mangrove sediment of Sundarban, India., Saline Syst., 6(1), 1-11.
- Chapman V.J. (1975)., The salinity problems in general, its importance, and distribution with special reference to natural halophytes., Plants in saline environments, Springer, Berlin, 7-24.
- Sengupta A. and Chaudhuri S. (2002)., Arbuscular mycorrhizal relations of mangrove plant community at the Ganges river estuary in India., Mycorrhiza, 12(4), 169-174.
- Jackson M.L. (1967)., Prentice Hall of India., Pvt. Ltd., New Delhi, 498.
- Dewis J. and Freitas F. (1984)., Physical and Chemical Methods of Soil and Water Analysis., Food and Agriculture Organization of the United Nations, Rome, 1-275.
- Cooke W.B. (1954)., Fungi in polluted water and sewage., II. Isolation technique. Sewage and Industrial Wastes, 26, 661-674.
- Eggins H.O.W. and Pugh G.J.F. (1962)., Isolation of cellulose decomposing fungi from the soil., Nature, 193, 94-95.