Browsing Scholarly literature by Author "Raghukumar, C."
Now showing items 21-40 of 97
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Changes in the marine green alga @iChaetomorpha media@@ on infection by a fungal pathogen
Raghukumar, C.; Chandramohan, D. (Walter de Gruyter, Berlin, 1988)Biochemical changes in the green filamentous alga @iChaetomorpha media@@ Kutzing infected with a holocarpic endobiotic fungus@@ Pontisma lagenidioides@@ Petersen were studied. Healthy plants of @iC. media@@ were inoculated ... -
Chytridium polysiphoniae - a fungal pathogen on the Red alga Centroceras clavulatum (C. Agardh) Montagne, from Goa
Raghukumar, C. (CSIR-NISCAIR, 1986)Centroceras clavulatum collected from rocky shores was found to harbour an epiphytic fungus identified as Chytridium polysiphoniae. Maximum infection of the host alga occurred during June-July 1984. Under laboratory ... -
Composition of macrobenthos from the central Indian Ocean Basin
Pavithran, S.; Ingole, B.S.; Nanajkar, M.; Raghukumar, C.; Nath, B.N.; Valsangkar, A.B. (Indian Academy of Sciences, 2009)The deep sea is well known for its high faunal diversity. But the current interest in its abundant polymetallic nodules, poses a threat to the little known benthic organisms surviving in this unique environment. The present ... -
Coral mortality in reefs: The cause and effect; A central concern for reef monitoring
Raghukumar, C. (M.S. Swaminathan Res. Found., Chennai (India), 1997)The primary causal agents for the destruction of corals are the abiotic and/or biotic agents or a combination of both. The abiotic factors that are responsible are bioerosion, sedimentation, eutrophication and pollution, ... -
Crowning corals
Raghukumar, C. (NISCAIR, CSIR, 1997)Biodiversity of coral reefs is responsible for productivity in the sea and these coral reefs are built mainly by corals containing a calcium-carbonate skeleton. The reef building corals are the hermotypic corals harbouring ... -
Decolorization of molasses spent wash by the white-rot fungus Flavodon flavus, isolated from a marine habitat
Raghukumar, C.; Rivonkar, G. (Springer, 2001)Flavodon flavus (Klotzsch) Ryvarden, a basidiomycete (NIOCC strain 312) isolated from decomposing leaves of a sea grass, decolorized pigments in molasses spent wash (MSW) by 80% after 8 days of incubation, when used at ... -
Decolorization of synthetic dyes and textile effluents by basidiomycetous fungi
Diwaniyan, S.; Kharb, D.; Raghukumar, C.; Kuhad, R.C. (Springer, 2010)Decolorization of six synthetic dyes and two raw textile effluents (A and B) by eight basidiomycetous fungi was investigated. Among eight basidiomycetous fungi, fungal isolate RCK-1 decolorized textile effluent A maximally ... -
Deep-sea fungi
Raghukumar, C.; Damare, S.R. (ASM Press, 2008)The deep-sea environment, despite being rich in mineral nutrients and near-saturation levels of oxygen, because of its darkness is not conducive to photosynthesis, the process that sustains life on earth. If a liigh abundance ... -
Deep-sea fungi as a source of alkaline and cold-tolerant proteases
Damare, S.R.; Raghukumar, C.; Muraleedharan, U.; Raghukumar, S. (Elsevier, 2006)Fungi from coastal environments have been widely studied with respect to the production of secondary metabolites and biotechnologically useful lignocellulolytic enzymes. A few studies on mycology of deep-sea sediments, ... -
Degradation of crude oil by marine cyanobacteria
Raghukumar, C.; Vipparty, V.; David, J.J.; Chandramohan, D. (Springer, 2001)The marine cyanobacteria Oscillatoria salina Biswas, Plectonema terebrans Bornet et Flanhault and Aphanocapsa sp. degraded Bombay High crude oil when grown in artificial seawater nutrients as well as in plain natural ... -
Degradation of lignin and decolorization of paper mill bleach plant effluent (BPE) by marine fungi
Raghukumar, C.; Chandramohan, D.; Michel, F.C.; Reddy, C.A. (Springer, 1996) -
Differentially expressed genes under simulated deep-sea conditions in the psychrotolerant yeast Cryptococcus sp. NIOCCPY13
Singh, P.; Raghukumar, C.; Verma, A.K.; Meena, R.M. (Springer, 2012)Microorganisms exhibit varying degrees of tolerance to extreme conditions of pressure and temperature. In the present study, the psychrotolerant deep-sea yeast, Cryptococcus sp. NIOCC_PY13, was exposed to elevated hydrostatic ... -
Disease and stress-induced mortality of corals in Indian reefs and observations on bleaching of corals in the Andamans
Ravindran, J.; Raghukumar, C.; Raghukumar, S. (Current Science Association, Bangalore, India, 1999)A study was carried out in the Lakshadweep and Andaman islands and the Gulf of Kutch to assess the health of corals in Indian reefs. Disease, predation and stress were the major factors of coral mortality. Death caused by ... -
Diseases of corals with particular reference to Indian reefs
Ravindran, J.; Raghukumar, C. (India: IUCN, 2012)Diseases are one of the factors that change the structure and functioning of coral-reef communities as they cause irreversible damage to the corals Reports on coral diseases describe the etiological agents responsible for ... -
Distribution and biomass estimation of shell-boring algae in the intertidal area at Goa India
Raghukumar, C.; Sharma, S.; Lande, V. (International Phycological Society, 1991)The distribution and frequency of shell-boring green and blue-green algae in the intertidal at Goa, India were studied. The green alga Gomontia sp. and the blue green algae Hyella caespitosa Bornet et Flahault, H. gigas ... -
Diversity and adaptations of deep-sea microorganisms
Raghukumar, C. (I.K. International, New Delhi, 2005)The discovery of near fresh closed lunch box found after 11 months in the wreck of the submersible Alvin in the year 1969 opened up a Pandora’s box of microbial diversity in the deep-sea. Discovery that near-freezing ... -
Dynamics of thraustochytrid protists in the water column of the Arabian Sea
Raghukumar, S.; Ramaiah, N.; Raghukumar, C. (Inter-Research, 2001)Thraustochytrids, a group of osmoheterotrophic chromistan protists are ubiquitous in the sea. However, little is known of their ecological role, particularly in oceanic waters. To obtain in insight into their dynamics in ... -
Effect of nutrient nitrogen on laccase production, its isozyme pattern and effluent decolorization by the fungus NIOCC No. 2a, isolated from mangrove wood
DeSouza-Ticlo, D.; Verma, A.K.; Mathew, M.; Raghukumar, C. (NISCAIR, CSIR, 2006)Carbon and nitrogen sources in the growth medium play an important role in the production of lignin-degrading enzymes in the white-rot basidiomyceteous fungi. The role of nutrient nitrogen sources in growth media on ... -
Effect of shallow-water venting in Azores on a few marine biota
Colaco, A.; Raghukumar, C.; Mohandass, C.; Cardigos, F.; Santos, R.S. (Station Biologique de Roscoff, 2006)The 1000 m high D. Joao de Castro seamount lies in the middle of the Azores Archipelago (Portugal) on the hyperslow-spreading Terceira rift in the Atlantic. Hydrothermal vents were found near the top of the seamount and ... -
Effects and interactions of medium components on laccase from a marine-derived fungus using response surface methodology
DeSouza-Ticlo, D.; Garg, S.; Raghukumar, C. (Molecular Diversity Preservation International, 2009)The effects of various synthetic medium components and their interactions with each other ultimately impact laccase production in fungi. This was studied using a laccase-hyper-producing marine-derived basidiomycete, Cerrena ...