Browsing by Author "Cavanaugh, Colleen"
Now showing items 1-20 of 31
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16S rRNA Phylogenetic Investigation of the Candidate Division "Korarchaeota"
Auchtung, T. A.; Takacs-Vesbach, C. D.; Cavanaugh, Colleen Marie (American Society for Microbiology, 2006)The environmental distribution and phylogeny of “Korarchaeota,” a proposed ancient archaeal division, was investigated by using the 16S rRNA gene framework. Korarchaeota-specific primers were designed based on previously ... -
Bias in Template-to-Product Ratios in Multitemplate PCR
Polz, Martin F.; Cavanaugh, Colleen Marie (American Society for Microbiology, 1998)Bias introduced by the simultaneous amplification of specific genes from complex mixtures of templates remains poorly understood. To explore potential causes and the extent of bias in PCR amplification of 16S ribosomal ... -
Characterization of an Autotrophic Sulfide-Oxidizing Marine Arcobacter sp. That Produces Filamentous Sulfur
Wirsen, C. O.; Sievert, S. M.; Cavanaugh, Colleen Marie; Molyneaux, S. J.; Ahmad, A.; Taylor, L. T.; DeLong, E. F.; Taylor, C. D. (American Society for Microbiology, 2002)A coastal marine sulfide-oxidizing autotrophic bacterium produces hydrophilic filamentous sulfur as a novel metabolic end product. Phylogenetic analysis placed the organism in the genus Arcobacter in the epsilon subdivision ... -
Characterization of chemoautotrophic bacterial symbionts in a gutless marine worm (Oligochaeta, Annelida) by phylogenetic 16S rRNA sequence analysis and in situ hybridization
Dubilier, N; Giere, O; Distel, D L; Cavanaugh, Colleen Marie (American Society for Microbiology, 1995)The phylogenetic relationships of chemoautotrophic endosymbionts in the gutless marine oligochaete Inanidrilus leukodermatus to chemoautotrophic ecto- and endosymbionts from other host phyla and to free-living bacteria ... -
Cloning and Sequencing of a Form II Ribulose-1,5-Bisphosphate Carboxylase/Oxygenase from the Bacterial Symbiont of the Hydrothermal Vent Tubeworm Riftia pachyptila
Robinson, Jonathan J; Stein, Jeffrey L; Cavanaugh, Colleen Marie (American Society for Microbiology, 1998)The bacterial symbiont of the hydrothermal vent tubeworm fixes carbon via the Calvin-Benson cycle and has been shown previously to express a form II ribulose-1,5-bisphosphate carboxylase/oxygenase (RubisCO). The gene cbbM, ... -
CO2 Uptake and Fixation by Endosymbiotic Chemoautotrophs from the Bivalve Solemya velum
Scott, K. M.; Cavanaugh, Colleen Marie (American Society for Microbiology, 2006)Chemoautotrophic symbioses, in which endosymbiotic bacteria are the major source of organic carbon for the host, are found in marine habitats where sulfide and oxygen coexist. The purpose of this study was to determine the ... -
Comparative Genomics of Vesicomyid Clam (Bivalvia: Mollusca) Chemosynthetic Symbionts
Newton, Irene Lucile Garcia; Girguis, Peter R.; Cavanaugh, Colleen Marie (BioMed Central, 2008)Background: The Vesicomyidae (Bivalvia: Mollusca) are a family of clams that form symbioses with chemosynthetic gamma-proteobacteria. They exist in environments such as hydrothermal vents and cold seeps and have a reduced ... -
Diversity and Heterogeneity of Epibiotic Bacterial Communities on the Marine Nematode Eubostrichus dianae
Polz, Martin F; Harbison, Christopher; Cavanaugh, Colleen Marie (American Society for Microbiology, 1999)The diversity of a microbial community covering the surface of a marine nematode was analyzed by performing a 16S ribosomal DNA (rDNA) restriction cutting and sequencing analysis. In two clone libraries constructed by using ... -
Dominance of one bacterial phylotype at a Mid-Atlantic Ridge hydrothermal vent site.
Polz, M. F.; Cavanaugh, Colleen Marie (Proceedings of the National Academy of Sciences, 1995)Microbial community structure in natural environments has remained largely unexplored yet is generally considered to be complex. It is shown here that in a Mid-Atlantic Ridge hydrothermal vent habitat, where food webs ... -
Dynamics of the Microbiota in Response to Host Infection
Belzer, Clara; Gerber, Georg K.; Roeselers, Guus; Delaney, Mary; DuBois, Andrea; Liu, Qing; Belavusava, Vera; Yeliseyev, Vladimir; Houseman, Andres; Onderdonk, Andrew; Cavanaugh, Colleen; Bry, Lynn (Public Library of Science, 2014)Longitudinal studies of the microbiota are important for discovering changes in microbial communities that affect the host. The complexity of these ecosystems requires rigorous integrated experimental and computational ... -
Evidence for Methylotrophic Symbionts in a Hydrothermal Vent Mussel (Bivalvia: Mytilidae) from the Mid-Atlantic Ridge
Cavanaugh, Colleen Marie; Wirsen, Carl O; Jannasch, H W (American Society for Microbiology, 1992)Symbioses between chemolithoautotrophic bacteria and the major macrofaunal species found at hydrothermal vents have been reported for numerous sites in the Pacific Ocean. We present microscopical and enzymatic evidence ... -
Evolution of Deep-Sea Mussels (Bathymodiolinae) and Their Chemosynthetic Endosymbionts
Fontanez, Kristina (2013-02-20)Symbiosis is one of the most widespread evolutionary strategies on Earth. In the deep-sea, symbioses between chemosynthetic bacteria and invertebrates are abundant at hydrothermal vents and cold seeps. These mutualisms, ... -
Family- and Genus-Level 16S rRNA-Targeted Oligonucleotide Probes for Ecological Studies of Methanotrophic Bacteria
Gulledge, J.; Ahmad, A.; Steudler, P. A.; Pomerantz, W. J.; Cavanaugh, Colleen Marie (American Society for Microbiology, 2001)Methanotrophic bacteria play a major role in the global carbon cycle, degrade xenobiotic pollutants, and have the potential for a variety of biotechnological applications. To facilitate ecological studies of these important ... -
Free-Living Tube Worm Endosymbionts Found at Deep-Sea Vents
Harmer, T. L.; Rotjan, R. D.; Nussbaumer, A. D.; Bright, M.; Ng, A. W.; DeChaine, E. G.; Cavanaugh, Colleen Marie (American Society for Microbiology, 2008)Recent evidence suggests that deep-sea vestimentiferan tube worms acquire their endosymbiotic bacteria from the environment each generation; thus, free-living symbionts should exist. Here, free-living tube worm symbiont ... -
Genetic Subdivision of Chemosynthetic Endosymbionts of Solemya velum along the Southern New England Coast
Stewart, Frank James; Baik, A. H. Y.; Cavanaugh, Colleen Marie (American Society for Microbiology, 2009)Population-level genetic diversity in the obligate symbiosis between the bivalve Solemya velum and its thioautotrophic bacterial endosymbiont was examined. Distinct populations along the New England coast shared a single ... -
The genome of the intracellular bacterium of the coastal bivalve, Solemya velum: a blueprint for thriving in and out of symbiosis
Dmytrenko, Oleg; Russell, Shelbi L; Loo, Wesley T; Fontanez, Kristina M; Liao, Li; Roeselers, Guus; Sharma, Raghav; Stewart, Frank J; Newton, Irene LG; Woyke, Tanja; Wu, Dongying; Lang, Jenna Morgan; Eisen, Jonathan A; Cavanaugh, Colleen M (BioMed Central, 2014)Background: Symbioses between chemoautotrophic bacteria and marine invertebrates are rare examples of living systems that are virtually independent of photosynthetic primary production. These associations have evolved ... -
Immunochemical localization of ribulose-1,5-bisphosphate carboxylase in the symbiont-containing gills of Solemya velum (Bivalvia: Mollusca)
Cavanaugh, Colleen Marie; Abbott, M. S.; Veenhuis, M. (Proceedings of the National Academy of Sciences, 1988)The distribution of the Calvin cycle enzyme ribulose-1,5-bisphosphate carboxylase (RbuP2Case; EC 4.1.1.39) was examined by using two immunological methods in tissues of Solemya velum, an Atlantic coast bivalve containing ... -
Independent phylogenetic origins of methanotrophic and chemoautotrophic bacterial endosymbioses in marine bivalves
Distel, D L; Cavanaugh, Colleen Marie (American Society for Microbiology, 1994)The discovery of bacterium-bivalve symbioses capable of utilizing methane as a carbon and energy source indicates that the endosymbionts of hydrothermal vent and cold seep bivalves are not restricted to sulfur-oxidizing ... -
Intracellular coexistence of methano- and thioautotrophic bacteria in a hydrothermal vent mussel.
Distel, D. L.; Lee, H. K.; Cavanaugh, Colleen Marie (Proceedings of the National Academy of Sciences, 1995)The coexistence of two phylogenetically distinct symbiont species within a single cell, a condition not previously known in any metazoan, is demonstrated in the gills of a Mid-Atlantic Ridge hydrothermal vent mussel (family ... -
Metatranscriptomic Analysis of Sulfur Oxidation Genes in the Endosymbiont of Solemya Velum
Stewart, Frank James; Dmytrenko, Oleg; DeLong, Edward F.; Cavanaugh, Colleen Marie (Frontiers Media SA, 2011)Thioautotrophic endosymbionts in the Domain Bacteria mediate key sulfur transformations in marine reducing environments. However, the molecular pathways underlying symbiont metabolism and the extent to which these pathways ...