Title Carotenoid diversity in novel Hymenobacter strains isolated from Victoria Upper Glacier, Antarctica, and implications for the evolution of microbial carotenoid biosynthesis
Author Klassen, J.L.
Source 279p. . Availability: Canadian Theses - - Thèses Canadiennes, Canada. ISBN: 978-0-494- 53988-0
Publication Date 2009
Notes In English. Ph.D. thesis. Includes 5 appendices. 120 refs. Ant. Acc. No: 91553. GeoRef Acc. No: 310385
Index Terms bacteria; classifications; ecology; Antarctica; biochemistry; biodiversity; biologic evolution; classification; genetics; habitat; microorganisms; phylogeny; physiology; taxonomy; Victoria Upper Glacier
Abstract Many diverse microbes have been detected in or isolated from glaciers, including novel taxa exhibiting previously unrecognized physiological properties with significant biotechnological potential. Of 29 unique phylotypes isolated from Victoria Upper Glacier, Antarctica (VUG), 12 were related to the the poorly studied bacterial genus Hymenobacter including several only distantly related to previously described taxa. Further study of these microorganisms revealed genotypic, phenotypic, morphological and chemotaxonomic divergence from named species and suggested that they likely represent novel Hymenobacter species. These studies also indicated, however, that the systematics of Hymenobacter and related microorganisms is more complex than previously realized, and may exhibit poorly defined species boundaries due to cosmopolitan dispersal, significant rates of horizontal gene transfer and reintroduction of archived genotypes. (mod. auth. abst.)
Publication Type monograph
Record ID 65006950