Spatiotemporal distribution of marine magnetotactic bacteria in a aeasonally stratified coastal salt pond

View/ Open
Date
2004-10Author
Simmons, Sheri L.
Concept link
Sievert, Stefan M.
Concept link
Frankel, R. B.
Concept link
Bazylinski, D. A.
Concept link
Edwards, Katrina J.
Concept link
Metadata
Show full item recordCitable URI
https://hdl.handle.net/1912/173As published
https://doi.org/10.1128/AEM.70.10.6230-6239.2004DOI
10.1128/AEM.70.10.6230-6239.2004Abstract
The occurrence and distribution of magnetotactic bacteria (MB) were studied as a function of the physical and chemical conditions in meromictic Salt Pond, Falmouth, Mass., throughout summer 2002. Three dominant MB morphotypes were observed to occur within the chemocline. Small microaerophilic magnetite-producing cocci were present at the top of the chemocline, while a greigite-producing packet-forming bacterium occurred at the base of the chemocline. The distributions of these groups displayed sharp changes in abundance over small length scales within the water column as well as strong seasonal fluctuations in population abundance. We identified a novel, greigite-producing rod in the sulfidic hypolimnion that was present in relatively constant abundance over the course of the season. This rod is the first MB that appears to belong to the {gamma}-Proteobacteria, which may suggest an iron- rather than sulfur-based respiratory metabolism. Its distribution and phylogenetic identity suggest that an alternative model for the ecological and physiological role of magnetotaxis is needed for greigite-producing MB.
Description
Author Posting. © American Society for Microbiology, 2004. This article is posted here by permission of American Society for Microbiology for personal use, not for redistribution. The definitive version was published in Applied and Environmental Microbiology 70 (2004): 6230-6239, doi:10.1128/AEM.70.10.6230-6239.2004.
Collections
Suggested Citation
Applied and Environmental Microbiology 70 (2004): 6230-6239Related items
Showing items related by title, author, creator and subject.
-
The nutritional role of endosymbiotic bacteria in animal-bacteria symbioses : Solemya velum, a case study
Conway, Noellette M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1990-08)The trophie interactions occurring between endosymbiotic bacteria and the host in animal-bacteria symbioses were investigated using the endosymbiont-containing protobranch clam, Solemya velum, as a general model. C, N, ... -
The redox and iron-sulfide geochemistry of Salt Pond and the thermodynamic constraints on native magnetotactic bacteria
Canovas, Peter A. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2006-06)Salt pond is a meromictic system with an outlet to the sea allowing denser seawater to occupy the monimolimnion while the mixolimnion has relatively low salinity and is the site of greater mixing and microbial activity. ... -
New criteria for selecting the origin of DNA replication in Wolbachia and closely related bacteria
Ioannidis, Panagiotis; Dunning Hotopp, Julie C.; Sapountzis, Panagiotis; Siozios, Stefanos; Tsiamis, Georgios; Bordenstein, Seth R.; Baldo, Laura; Werren, John H.; Bourtzis, Kostas (BioMed Central, 2007-06-20)Background: The annotated genomes of two closely related strains of the intracellular bacterium Wolbachia pipientis have been reported without the identifications of the putative origin of replication (ori). Identifying ...