Black yeasts from the slope sediments of Bay of Bengal: phylogenetic and functional characterization

SN Kutty
2013 Mycosphere  
Occurrence of black yeasts in the slope sediments of Bay of Bengal was investigated during FORV Sagar Sampada cruises 236 and 245. The black yeast population was found to be very scanty in the area and the isolates could be obtained from 200m to 1000m depth regions in the slope sediments. The isolates were identified as Hortaea werneckii by Internal Transcribed Spacer (ITS) sequencing. The biodegradation potential of these strains was found to be very high with all the strains exhibiting
more » ... e, lipase and amylase production. The optimum growth conditions were pH 8, salinity 30 ppt and temperature 30 o C. The pigment melanin, in these organisms was identified to be of dihydroxynaphthalene type by NMR. The melanin was found to exhibit inhibitory activity against different human and fish pathogens. Melanin degrading enzyme could also be extracted from these organisms. Mycosphere 4 (3): 346-361 (2013) ISSN 2077 7019 www.mycosphere.org Article Mycosphere
doi:10.5943/mycosphere/4/3/1 fatcat:q4b3hvzxe5fl7itw42owbctwce