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

Mycosphere: journal of fungal biology

Kutty SN1 ; Lawman D2 ; Singh ISB3 and Philip R

关键词: Antibacterial;    Black yeasts;    Dihydroxynaphthalene;    Hortaea werneckii;    Marine;    Melanin;   

学科分类：植物学

来源: Mycosphere Press

【 摘 要 】

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 protease, lipase and amylase production. The optimum growth conditions were pH 8, salinity 30 ppt and temperature 30oC. 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.

【 授权许可】

CC BY-NC-SA