RAJESH KUMAR
Rain Forest Research Institute, P.O. 136, Jorhat 785001, Assam, India.

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Diversity and frequency of macrofungi associated with wet ever green tropical forest in Assam, India ASHWANI TAPWAL; RAJESH KUMAR; SHAILESH PANDEY
Biodiversitas Journal of Biological Diversity Vol. 14 No. 2 (2013)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d140204

Abstract

Tapwal A, Kumar R, Pandey S. 2013. Diversity and frequency of macrofungi associated with wet ever green tropical forest in Assam, India. Biodiversitas 14: 73-78. A study was conducted in Jeypore Reserve Forest located in Assam, India to investigate the diversity of macrofungi associated with different tree species. The diversity of broad leaves trees and high humidity during monsoon period favours ideal growth of diverse group of macrofungal fruiting bodies. Thirty macrofungal species representing 26 genera belonging to 17 families were collected from six different sites in the study area. Out of these maximum six genera assignable to family Polyporaceae, five genera to Russulaceae, three genera to Agaricaceae, two genera to Ganodermataceae and Cantharellaceae each and rest of the families were represented by single genus only. The ecological preference of the species reveled that maximum (17) species were saprophyte, living on dead substrates or decaying wood debris, ten species were found associated with roots of higher trees, while three species were found parasitic. Overall 20 species were found edible including some species having medicinal utilization. The present study revealed that maximum frequency of occurrence was exhibited by Trametes versicolor and Schizophyllum commune (83.33%), followed by Microporus xanthopus, Pycnoporus sanguineus (66.67%) and Coprinus disseminates (50%). The rest of the species exhibited the frequency distribution ranging between 16.67-33.33%. The maximum density was recorded for Schizophyllum commune (126.67%) followed by Trametes versicolor (120%) and Xylaria polymorpha (93.33%). The density of rest of the species were ranged between 3.33- 6.67%. The key objective of the present study was to generate a database on macrofungal diversity of Jeypore Reserve Forest along with their ecological preferences and utilization, which is not earlier documented.
Observations on arbuscular mycorrhiza associated with important edible tuberous plants grown in wet evergreen forest in Assam, India RAJESH KUMAR; ASHWANI TAPWAL; SHAILESH PANDEY; RAJA RISHI; DEVAPOD BORAH
Biodiversitas Journal of Biological Diversity Vol. 14 No. 2 (2013)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d140203

Abstract

Kumar R, Tapwal A, Pandey S, Rishi R, Borah D. 2013. Observations on arbuscular mycorrhiza associated with important edible tuberous plants grown in wet evergreen forest in Assam, India. Biodiversitas 14: 67-72. Non-timber forest products constitute an important source of livelihood for rural households from forest fringe communities across the world. Utilization of wild edible tuber plants is an integral component of their culture. Mycorrhizal associations influence the establishment and production of tuber plants under field conditions. The aim of present study is to explore the diversity and arbuscular mycorrhizal (AMF) colonization of wild edible tuber plants grown in wet evergreen forest of Assam, India. A survey was conducted in 2009-10 in Sunaikuchi, Khulahat, and Bura Mayong reserved forest of Morigaon district of Assam to determine the AMF spore population in rhizosphere soils and root colonization of 14 tuberous edible plants belonging to five families. The results revealed AMF colonization of all selected species in all seasons. The percent colonization and spore count was less in summer, moderate in winter and highest in rainy season. Seventeen species of arbuscular mycorrhizal fungi were recorded in four genera viz. Acaulospora (7 species), Glomus (5 species), Sclerocystis (3 species) and Gigaspora (2 species).
Fungal diversity associated with bamboo litter from Bambusetum of Rain Forest Research Institute, Northeast India RAJESH KUMAR; ASHWANI TAPWAL; SHAILESH PANDEY; RAJA RISHI
Biodiversitas Journal of Biological Diversity Vol. 14 No. 2 (2013)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d140205

Abstract

Kumar R, Tapwal A, Pandey S, Rishi R. 2013. Fungal diversity associated with bamboo litter from Bambusetum of Rain Forest Research Institute, Northeast India. Biodiversitas 14: 79-88. Fungi play an important role in leaf litter decomposition due to their ability to break down the lignocelluloses matrix, which other organisms are unable to digest. Diversity of bamboo leaf litter fungi from fallen leaves and undergoing active decomposition leaves in different season and different depth was carried out in 2009-10. Twenty four samples were collected from Bambusetum of Rain Forest Research Institute (RFRI),  Northeast India. The moist chamber, direct isolation and dilution plate methods were used to assess the diversity of fungal species. Fungi were cultivated on 3% malt extract agar and half strength potato dextrose agar. The litter was divided into freshly fallen senescent leaves (grade 1) and leaves already undergoing active decomposition (grade 2). Moist chamber incubation of the litter revealed 45 fungal taxa belonging to 22 genera. fungal taxa were found on grade I and 39 fungal taxa found on grade II litter. Although 24 fungal taxa were common to both grades, Differences were observed in percentage occurrence of fugal species between the two grades of litter. Periodic surveys were carried out to collect macrofungi. Young and matured carpophores of 16 macro fungi species were collected in different seasons. Out of these macrofungi, 3 species belongs to family Entolomataceae and Agaricacea, two species belongs to Tricholomataceae and Geoglossaceae one species belongs to each family Dacrymycetaceae, Pluteaceae, Coprinaceae, Marasmiaceae Lycoperdaceae and Phallaceae. The bamboo leaf-litter was selected for the present syudy because of the dominance and great economic value of bamboo vegetation in North-east India.