Browsing Scholarly literature by Author "Raghukumar, S."
Now showing items 21-40 of 65
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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 ... -
Docosahexaenoic acid accumulation in hraustochytrids: Search for the rationale
Jain, R.; Raghukumar, S.; Sambaiah, K.; Kumon, Y.; Nakahara, T. (Springer, 2007)Thraustochytrid protists characteristically accumulate high amounts of lipids, much of which is comprised of the polyunsaturated fatty acid, docosahexaenoic acid (DHA). Since DHA is important in human health, thraustochytrids ... -
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 ... -
Ecology of the marine protists, the Labyrinthulomycetes (Thraustochytrids and Labyrinthulids)
Raghukumar, S. (Urban & Fischer Verlag, 2002)The Labyrinthulomycetes, comprising Thraustochytrids and Labyrinthulids, are marine osmoheterotrophic straminipilan protists which have been isolated from a variety of habitats all over the world. The limited knowledge on ... -
Endolithic fungi from deep sea calcareous substrata: isolation and laboratory studies
Raghukumar, C.; Raghukumar, S.; Sharma, S.; Chandramohan, D. (Oxford and IBH, New Delhi, 1992)Fungi were isolated from calcareous animal shells at 100-860 m depth in the Bay of Bengal. All the species isolated were terrestrial ones, Aspergillus restrictus Smith being the most common. The behaviour of this fungus ... -
Enhanced production of polyunsaturated fatty acid docosahexaenoic acid by thraustochytrid protists
Jain, R.; Raghukumar, S.; Chandramohan, D. (Springer, 2004)The polyunsaturated fatty acid docosahexaenoic acid (DHA) is an important requirement in the human diet. It is also essential in the nutrition of crustaceans and aquaculture animals. Of the sources available for commercial ... -
Enumeration of thraustochytrids (Heterotrophic microorganisms) from the Arabian Sea
Raghukumar, S. (Indian Association for Limnology and Oceanography, 1985)The number of thraustochytrids in seawater has been estimated in several samples from the Arabian Sea by concentrating the sample on a glass-fibre filter and plating on a nutrient medium. The number ranged from 1 to 69 ... -
Exploration and metamorphosis in Balanus amphitrite Darwin (Cirripedia ; Thoracica) cyprids: significance of sugars and adult extract
Khandeparker, L.; Anil, A.C.; Raghukumar, S. (Elsevier, 2002)Earlier observations have shown that sugars in solution adsorb electrostatically through –OH groups to polar groups associated with the cypris larva temporary adhesive (CTA). Lens culinaris agglutinin (LCA)-binding sugar ... -
Extracellular polysaccharide production by Thraustochytrid protists
Jain, R.; Raghukumar, S.; Tharanathan, R.; Bhosle, N.B. (Springer, 2005)Four strains of marine stramenopilan protists, the thraustochytrids, were studied for their ability to produce extracellular polysaccharides (EPSs). Observations by light and scanning electron microscopy revealed the ... -
Factors regulating the production of different inducers in Pseudomonas aeruginosa with reference to larval metamorphosis in Balanus amphitrite
Khandeparker, L.; Anil, A.C.; Raghukumar, S. (Inter-Research, 2002)Gregarious settlement in barnacles has been related to the settlement-inducing compounds from adult conspecifics, bacteria in the biofilms, and their interaction. Elucidation of larval settlement cues from these sources ... -
Fungal invasion of massive corals
Raghukumar, C.; Raghukumar, S. (Blackwell, 1991)Five species of corals from the Andaman Islands in the Bay of Bengal (Indian Ocean) have been regularly found to have single or multiple necrotic patches. The occurrence of such corals with necrotic patches varied from ... -
Fungi and their biomass in detritus of the seagrass Thalassia hemprichii (Ehrenberg) Ascherson
Sathe, V.; Raghukumar, S. (Walter de Gruyter, Berlin, 1991)Four different stages of detritus from the seagrass Thalassia hemprichii Ascherson from two coral islands in the Lakshadweep Archipelago, Arabian Sea were examined for the presence of fungi. Direct microscopic examination ... -
Fungi in deep-sea sediments of the Central Indian Basin
Damare, S.R.; Raghukumar, C.; Raghukumar, S. (Elsevier, 2006)Although a great amount of information is available on bacteria inhabiting deep-sea sediments, the occurrence of fungi in this environment has been poorly studied and documented. We report here the occurrence of fungi in ... -
Fungi in Porites lutea: Association with healthy and diseased corals
Ravindran, J.; Raghukumar, C.; Raghukumar, S. (Inter-Research, 2001)Healthy and diseased scleractinian corals have been reported to harbour fungi. However, the species of fungi occurring in them and their prevalence in terms of biomass have not been determined and their role in coral ... -
Fungi living in diverse extreme habitats of the marine environment
Raghukumar, S.; Raghukumar, C.; Manohar, C.S. (Mycological Society of India, 2014)The marine environment contains several habitats characterized by extreme living conditions. However, extremophilic marine fungi were neither well known, nor often studied. Many studies in recent years have shown that fungi ... -
Increasing evidence for the important role of Labyrinthulomycetes in marine ecosystems
Raghukumar, S.; Damare, V.S. (Walter de Gruyter, 2011)This review summarizes increasing evidence for the role of Labyrinthulomycetes in marine ecosystems gathered over the last six decades. It focuses on their diversity, habitats, biomass, productivity and overall role in ... -
Investigations on fungal parasites of marine algae in India: An appraisal
Raghukumar, C.; Raghukumar, S. (H.D.Rastogi Publication, India, 1994) -
Laccase and other lignocellulose modifying enzymes of marine fungi isolated from the coast of India
Raghukumar, C.; Raghukumar, S.; Chinnaraj, S.; Chandramohan, D.; DeSouza, T.M.; Reddy, C.A. (Walter de Gruyter, Berlin, 1994) -
Manglicolous fungi from Chorao mangroves, Goa, West coast of India: Diversity and frequency of occurrence
Sarma, V.V.; Raghukumar, S. (E. Schweizerbart'sche Verlagsbuchhandlung, 2013)In this paper marine fungi colonizing the decomposing substrata belonging to Rhizophora mucronata and Avicennia marina, at Chorao mangroves, Mandovi river, Goa, West coast of India, are reported. Totally, 45 fungal species ... -
Marine aggregates and transparent exopolymeric particles (TEPs) as substrates for the stramenopilan fungi, the thraustochytrids: Roller table experimental approach.
Damare, V.S.; Raghukumar, S. (Mycological Society of India, 2012)In order to understand the kind of organic substrates utilized by thraustochytrids in the coastal water column, their growth in the presence of Transparent Exopolymeric Substances (TEPS) and aggregates generated in roller ...