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|Title:||Diversity and Distribution of Marine Yeasts in Kuwait||Authors:||نصره عبدي علي||Supervisor:||د. دنيا الغربللي||Keywords:||Marine Yeasts||Issue Date:||2011||Publisher:||Kuwait university - college of graduate studies||Abstract:||iv Abstract The diversity and distribution of marine yeasts in Kuwait was investigated. Samples were collected over a period of one year from Doha Bay coastal area as well as offshore area. Yeasts were isolated from offshore seawater from two sites at three different depths (0, 3, and 6m), coastal seawater from sandy and rocky sites, and intertidal sediments from 3 sites. Seasonal sampling was conducted during spring (March/April 2009), summer (August 2009) and winter (January 2010). Yeast isolates were identified molecularly while denaturing gradient gel electrophoresis (DGGE) was conducted in order to compare yeast populations in the different seawater and sediment samples collected during the three seasons in addition to seaweed samples collected during the algal blooming season (February 2009). Many yeast species were isolated in the current study, belonging to fifteen genera: Aureobasidium, Bulleromyces, Candida, Cryptococcus, Exophiala, Galactomyces, Geotrichum, Hortaea, Pichia, Pseudozyma, Preussia, Rhodotorula, Sporobolomyces, Tilletiopsis and Trichosporon of which Rhodotorula was the most dominant. DGGE analysis of environmental samples indicated that the yeast population tends to be higher during winter and summer compared to spring, and that the species diversity was greatest in the intertidal sediment samples, followed by coastal seawater, offshore seawater and finally seaweed samples which exhibited the least diversity. Since this is the first study conducted in Kuwait of its kind, further studies are required in order to investigate the diversity and distribution of marine yeasts in other areas in Kuwait which may be inhabited by different yeast species.||URI:||http://hdl.handle.net/123456789/216|
|Appears in Programs:||0520 Microbiology (M.Sc.)|
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