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Environmental Microbiology and Microbial Ecology Commons™
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Full-Text Articles in Environmental Microbiology and Microbial Ecology
Diversity Of Cultured Bacteria From The Perennial Ice Block Of Scarisoara Ice Cave, Romania, Corina Iţcuş, Mădălina-Denisa Pascu, Traian Brad, Aurel Perşoiu, Cristina Purcarea
Diversity Of Cultured Bacteria From The Perennial Ice Block Of Scarisoara Ice Cave, Romania, Corina Iţcuş, Mădălina-Denisa Pascu, Traian Brad, Aurel Perşoiu, Cristina Purcarea
International Journal of Speleology
Cave ice ecosystems represent a poorly investigated glacial environment. Diversity of cave ice bacteria and their distribution in perennial ice deposits of this underground glacial habitat could constitute a proxy for microbial response to climatic and environmental changes. Scarisoara Ice Cave (Romania) hosts one of the oldest and largest cave ice blocks worldwide. Here we report on cultured microbial diversity of recent, 400, and 900 years-old perennial ice from this cave, representing the first characterization of a chronological distribution of cave-ice bacteria. Total cell density measured by SYBR Green I epifluorescence microscopy varied in the 2.4 x 104 – …
Diversity And Activity Of Roseobacters And Roseophage, Charles Ryan Budinoff
Diversity And Activity Of Roseobacters And Roseophage, Charles Ryan Budinoff
Doctoral Dissertations
Bacteria of the Roseobacter lineage are dominant bacterioplankton in coastal systems and contribute significantly to secondary production in oceanic environments. Generalities of Roseobacter ecology, diversity, and distributions are known, but the intraspecific differences between species and their dynamics over short temporal periods is not well understood. Bacteriophage that infect Roseobacters (‘roseophage’) have the potential to shunt secondary production into the dissolved carbon pool and through the process of infection alter Roseobacter physiology. Despite their significance, little effort was made prior to the onset of this study to characterize roseophage. Using culture dependent and independent approaches, I describe the diversity and …