Research Topics
Species
| F M CohanSummaryAffiliation: Wesleyan University Country: USA Publications
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Detail Information
Publications
Prokaryotic sex: eukaryote-like qualities of recombination in an Archaean lineageFrederick M Cohan
Department of Biology, Wesleyan University, Middletown, CT, USA
Curr Biol 22:R601-2. 2012..Genetic exchange within one Archaean lineage is a bit like sex in eukaryotes - cells fuse and huge segments of DNA are recombined - with consequences for the spread of adaptations across species...- Microbial genomics: E. coli relatives out of doors and out of bodyFrederick M Cohan
Department of Biology, Wesleyan University, Middletown, Connecticut, USA
Curr Biol 21:R587-9. 2011..coli have historically not shared environments with gut-associated E. coli... - Synthetic biology: now that we're creators, what should we create?Frederick M Cohan
Department of Biology, Wesleyan University, Middletown, Connecticut, USA
Curr Biol 20:R675-7. 2010..The technology allows the introduction of easily transferable adaptive units, as well as sets of genes that have likely never been transferred successfully... - Tracking bacterial responses to global warming with an ecotype-based systematicsF M Cohan
Department of Biology, Wesleyan University, Middletown, CT 06459 0170, USA
Clin Microbiol Infect 15:54-9. 2009..Creating an ecotype-based systematics will help to identify the units of diversity that we will want to track as we seek to observe the early microbial responses to global warming... - The origins of ecological diversity in prokaryotesFrederick M Cohan
Department of Biology, Wesleyan University, Middletown, CT 06459 0170, USA
Curr Biol 18:R1024-34. 2008..This effort will require development of universal approaches to hypothesize demarcations of ecotypes, and to confirm and characterize their ecological distinctness, without prior knowledge of a given clade's ecology... 
Towards a conceptual and operational union of bacterial systematics, ecology, and evolutionFrederick M Cohan
Department of Biology, Wesleyan University, Middletown, CT 06459 0170, USA
Philos Trans R Soc Lond B Biol Sci 361:1985-96. 2006....
Sexual isolation and speciation in bacteriaFrederick M Cohan
Department of Biology, Wesleyan University, Middletown, CT 06459 0170, USA
Genetica 116:359-70. 2002..Interspecific recombination may also foster speciation by introducing novel gene loci from divergent species, allowing invasion of new niches...- Bacterial species and speciationF M Cohan
Department of Biology, Wesleyan University, Middletown, Connecticut 06459 0170, USA
Syst Biol 50:513-24. 2001..Owing to the rarity and promiscuity of bacterial genetic exchange, speciation in the bacterial world is expected to be much less constrained than in the world of animals and plants... - What are bacterial species?Frederick M Cohan
Department of Biology, Wesleyan University, Middletown, Connecticut 06459 0170, USA
Annu Rev Microbiol 56:457-87. 2002..These molecular methods suggest that a typical named species contains many ecotypes, each with the universal attributes of species. A named bacterial species is thus more like a genus than a species... - Barriers to genetic exchange between bacterial species: Streptococcus pneumoniae transformationJ Majewski
Department of Biology, Wesleyan University, Middletown, Connecticut 06459, USA
J Bacteriol 182:1016-23. 2000..We discuss the possible additional mechanisms of sexual isolation, in view of earlier findings from Bacillus, Escherichia, and Streptococcus... - A systematics for discovering the fundamental units of bacterial diversityFrederick M Cohan
Department of Biology, Wesleyan University, Middletown, Connecticut 06459 0170, USA
Curr Biol 17:R373-86. 2007..This would establish a theory-based species unit that holds the dynamic properties broadly attributed to species outside of microbiology... - Bacillus sonorensis sp. nov., a close relative of Bacillus licheniformis, isolated from soil in the Sonoran Desert, ArizonaM M Palmisano
Department of Biology, Wesleyan University, Middletown, CT 06459-0170, USA
Int J Syst Evol Microbiol 51:1671-9. 2001..B. sonorensis can be distinguished from B. licheniformis by salt tolerance, pigmentation, multilocus enzyme electrophoresis, reassociation of genomic DNA and sequence differences in protein-coding genes and 16S rRNA... - Ecology of speciation in the genus BacillusNora Connor
Department of Biology, Wesleyan University, Middletown, CT 06459, USA
Appl Environ Microbiol 76:1349-58. 2010..subtilis-B. licheniformis clade: ES and AdaptML identified several newly discovered clades as ecotypes that are distinct from any recognized taxon... - DNA sequence similarity requirements for interspecific recombination in BacillusJ Majewski
Department of Biology, Wesleyan University, Middletown, Connecticut 06459, USA
Genetics 153:1525-33. 1999..They also suggest a model for rapid spread of novel adaptations, such as antibiotic resistance genes, among related species... - Gradual evolution in bacteria: evidence from Bacillus systematicsMichael Feldgarden
Department of Biology, Wesleyan University, Middletown, CT 06459-0170, USA
Microbiology 149:3565-73. 2003..A protocol is presented for identifying those modifications of gene expression and those gene acquisitions that are most likely to have played a role in adaptive evolution... - Identifying the fundamental units of bacterial diversity: a paradigm shift to incorporate ecology into bacterial systematicsAlexander Koeppel
Departments of Biology and Mathematics and Computer Science, Wesleyan University, Middletown, CT 06459, USA
Proc Natl Acad Sci U S A 105:2504-9. 2008..Ecotype simulation provides a long-needed natural foundation for microbial ecology and systematics... - Population level functional diversity in a microbial community revealed by comparative genomic and metagenomic analysesDevaki Bhaya
Department of Plant Biology, Carnegie Institution, Stanford, CA 94305, USA
ISME J 1:703-13. 2007.... - Cyanobacterial ecotypes in the microbial mat community of Mushroom Spring (Yellowstone National Park, Wyoming) as species-like units linking microbial community composition, structure and functionDavid M Ward
Department of Land Resources and Environmental Sciences, Montana State University, Bozeman, MT 59717, USA
Philos Trans R Soc Lond B Biol Sci 361:1997-2008. 2006..Further, we show that increased molecular resolution enhances our ability to detect ecotypes in this way, though yet higher molecular resolution is probably needed to detect all ecotypes in this microbial community... - Opinion: Re-evaluating prokaryotic speciesDirk Gevers
Laboratory of Microbiology and the Bioinformatics and Evolutionary Genomics Research Group, Ghent University VIB, Ghent, Belgium
Nat Rev Microbiol 3:733-9. 2005..We also consider the potential, and difficulties, of assigning species status to biologically or ecologically meaningful sequence clusters...