TY - JOUR T1 - Phylogenetic organization of bacterial activity. JF - The ISME journal Y1 - 2016 A1 - Ember M Morrissey A1 - Mau,Rebecca L A1 - Egbert Schwartz A1 - Caporaso,J Gregory A1 - P Dijkstra A1 - van Gestel,Natasja A1 - BJ Koch A1 - Liu,Cindy M A1 - Hayer,Michaela A1 - McHugh,Theresa A A1 - Jane C Marks A1 - Lance B Price A1 - Hungate,Bruce A KW - Bacteria KW - Biological Evolution KW - Carbon Isotopes KW - Ecology KW - Ecosystem KW - Oxygen Isotopes KW - Phenotype KW - Phylogeny AB -

Phylogeny is an ecologically meaningful way to classify plants and animals, as closely related taxa frequently have similar ecological characteristics, functional traits and effects on ecosystem processes. For bacteria, however, phylogeny has been argued to be an unreliable indicator of an organism's ecology owing to evolutionary processes more common to microbes such as gene loss and lateral gene transfer, as well as convergent evolution. Here we use advanced stable isotope probing with (13)C and (18)O to show that evolutionary history has ecological significance for in situ bacterial activity. Phylogenetic organization in the activity of bacteria sets the stage for characterizing the functional attributes of bacterial taxonomic groups. Connecting identity with function in this way will allow scientists to begin building a mechanistic understanding of how bacterial community composition regulates critical ecosystem functions.

VL - 10 SN - 1751-7362 UR - http://www.ncbi.nlm.nih.gov/sites/entrez?Db=pubmed&DbFrom=pubmed&Cmd=Link&LinkName=pubmed_pubmed&LinkReadableName=Related%20Articles&IdsFromResult=26943624&ordinalpos=3&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSumhttp://www.ncbi. IS - 9 ER - TY - JOUR T1 - Tree hybridization and genotypic variation drive cryptic speciation of a specialist mite herbivore. JF - Evolution; international journal of organic evolution Y1 - 2008 A1 - Evans,Luke M A1 - Allan,Gerard J A1 - Shuster,Stephen M A1 - Woolbright,Scott A A1 - Whitham,Thomas G KW - Analysis of Variance KW - Animals KW - Base Sequence KW - Cluster Analysis KW - Crosses, Genetic KW - DNA Primers KW - Genetic Variation KW - Genetics, Population KW - Geography KW - Host-Parasite Interactions KW - Hybridization, Genetic KW - Mites KW - Molecular Sequence Data KW - Phylogeny KW - Populus KW - Sequence Analysis, DNA KW - Utah AB -

Few studies have investigated the roles that plant hybridization and individual plant genotype play in promoting population divergence within arthropod species. Using nrDNA sequence information and reciprocal transfer experiments, we examined how tree cross type (i.e., pure Populus angustifolia and P. angustifolia x P. fremontii F(1) type hybrids) and individual tree genotype influence host race formation in the bud-galling mite Aceria parapopuli. Three main findings emerged: (1) Strong genetic differentiation of mite populations found on pure P. angustifolia and F(1) type hybrids indicates that these mites represent morphologically cryptic species. (2) Within the F(1) type hybrids, population genetic analyses indicate migration among individual trees; however, (3) transfer experiments show that the mites found on heavily infested F(1) type trees perform best on their natal host genotype, suggesting that genetic interactions between mites and their host trees drive population structure, local adaptation, and host race formation. These findings argue that hybridization and genotypic differences in foundation tree species may drive herbivore population structure, and have evolutionary consequences for dependent arthropod species.

VL - 62 SN - 0014-3820 UR - http://www.ncbi.nlm.nih.gov/sites/entrez?Db=pubmed&DbFrom=pubmed&Cmd=Link&LinkName=pubmed_pubmed&LinkReadableName=Related%20Articles&IdsFromResult=18752612&ordinalpos=3&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSumhttp://www.ncbi. IS - 12 ER -