Blog

Hola, Subo sus prácticas para que puedan complementar el trabajo que hicieron entre todos.  

Chan, J., & Halachev, M. (2012). Defining bacterial species in the genomic era: insights from the genus Acinetobacter. BMC microbiology, 0(758), 3–11. Retrieved from http://www.biomedcentral.com/1471-2180/12/302/ Abstract Background Microbial taxonomy remains a conservative discipline, relying on phenotypic information derived from growth in pure culture and techniques that are time-consuming and difficult to standardize, particularly when compared…
Leer más

Peña, A., Teeling, H., Huerta-Cepas, J., Santos, F., Yarza, P., Brito-Echeverría, J., Lucio, M., et al. (2010). Fine-scale evolution: genomic, phenotypic and ecological differentiation in two coexisting Salinibacter ruber strains. The ISME journal, 4(7), 882–95. doi:10.1038/ismej.2010.6 Genomic and metagenomic data indicate a high degree of genomic variation within microbial populations, although the ecological and evolutive…
Leer más

Retchless, A. C., & Lawrence, J. G. (2007). Temporal fragmentation of speciation in bacteria. Science (New York, N.Y.), 317(5841), 1093–6. doi:10.1126/science.1144876 Because bacterial recombination involves the occasional transfer of small DNA fragments between strains, different sets of niche-specific genes may be maintained in populations that freely recombine at other loci. Therefore, genetic isolation may be…
Leer más

Zhaxybayeva, O., Swithers, K. S., Lapierre, P., Fournier, G. P., Bickhart, D. M., DeBoy, R. T., Nelson, K. E., et al. (2009). On the chimeric nature, thermophilic origin, and phylogenetic placement of the Thermotogales. Proceedings of the National Academy of Sciences of the United States of America, 106(14), 5865–70. doi:10.1073/pnas.0901260106 Since publication of the first…
Leer más

McDaniel, L. D., Young, E., Delaney, J., Ruhnau, F., Ritchie, K. B., & Paul, J. H. (2010). High frequency of horizontal gene transfer in the oceans. Science (New York, N.Y.), 330(6000), 50. doi:10.1126/science.1192243 Oceanic bacteria perform many environmental functions, including biogeochemical cycling of many elements, metabolizing of greenhouse gases, functioning in oceanic food webs (microbial…
Leer más

Cadillo-Quiroz, H., Didelot, X., Held, N. L., Herrera, A., Darling, A., Reno, M. L., Krause, D. J., et al. (2012). Patterns of gene flow define species of thermophilic Archaea. PLoS biology, 10(2), e1001265. doi:10.1371/journal.pbio.1001265 Despite a growing appreciation of their vast diversity in nature, mechanisms of speciation are poorly understood in Bacteria and Archaea. Here…
Leer más

Barraclough, T. G., Balbi, K. J., & Ellis, R. J. (2012). Evolving Concepts of Bacterial Species. Evolutionary Biology, 39(2), 148–157. doi:10.1007/s11692-012-9181-8 The same evolutionary forces that cause diversification in sexual eukaryotes are expected to cause diversification in bacteria. However, in bacteria, the wider variety of mechanisms for gene exchange (or lack thereof) increases the range…
Leer más

Cohan, F. M., & Perry, E. B. (2007). A systematics for discovering the fundamental units of bacterial diversity. Current biology : CB, 17(10), R373–86. doi:10.1016/j.cub.2007.03.032 Bacterial systematists face unique challenges when trying to identify ecologically meaningful units of biological diversity. Whereas plant and animal systematists are guided by a theory-based concept of species, microbiologists have…
Leer más

Doolittle, W. F. (2012). Population genomics: how bacterial species form and why they don’t exist. Current biology : CB, 22(11), R451–3. doi:10.1016/j.cub.2012.04.034 Two processes suggested to drive bacterial speciation – periodic selection and recombination – are generally thought to be mutually opposed. Recent work shows that data taken as evidence supporting the former may be…
Leer más

Vos, M. (2011). A species concept for bacteria based on adaptive divergence. Trends in microbiology, 19(1), 1–7. doi:10.1016/j.tim.2010.10.003 Bacterial strains are currently grouped into species based on overall genomic similarity and sharing of phenotypes deemed ecologically important. Many believe this polyphasic taxonomy is in need of revision because it lacks grounding in evolutionary theory, and…
Leer más

genomica evolutiva 1

Lundberg, D. S., Lebeis, S. L., Paredes, S. H., Yourstone, S., Gehring, J., Malfatti, S., Tremblay, J., et al. (2012). Defining the core Arabidopsis thaliana root microbiome. Nature, 488(7409), 86–90. doi:10.1038/nature11237 Land plants associate with a rootmicrobiota distinct from the com- plexmicrobial community present in surrounding soil. The micro- biota colonizingtherhizosphere (immediately surroundingthe root) and…
Leer más

Belda-Ferre, P., Alcaraz, L. D., Cabrera-Rubio, R., Romero, H., Simón-Soro, A., Pignatelli, M., & Mira, A. (2011). The oral metagenome in health and disease. The ISME journal, 1(11), 46–56. doi:10.1038/ismej.2011.85 The oral cavity of humans is inhabited by hundreds of bacterial species and some of them have a key role in the development of oral…
Leer más

Human, T., & Project, M. (2012). A framework for human microbiome research. Nature, 486(7402), 215–21. doi:10.1038/nature11209 A variety of microbial communities and their genes (the microbiome) exist throughout the human body, with fundamental roles in human health and disease. The National Institutes of Health (NIH)-funded Human Microbiome Project Consortium has established a population-scale framework to…
Leer más