TY - JOUR T1 - Cheatgrass invasion alters the abundance and composition of dark septate fungal communities in sagebrush steppe. JF - Botany Y1 - 2016 A1 - CA Gehring A1 - Hayer,M A1 - L Flores-Renteria A1 - Krohn,AL A1 - Schwartz,E A1 - P Dijkstra AB - Invasive, non-native plant species can alter soil microbial communitiesin ways that contribute to their persistence. While most studies emphasize mycorrhizal fungi, invasive plants also may influence communities of dark septate fungi (DSF), which are common root endophytes that can function like mycorrhizas. We tested the hypothesis that a widespread invasive plant in the western United States, cheatgrass (Bromus tectorum L.), influenced the abundance and community composition of DSF by examining the roots and rhizosphere soils of cheatgrass and two native plant species in cheatgrass-invaded and noninvaded areas of sagebrush steppe. We focused on cheatgrass because it is negatively affected by mycorrhizal fungi and colonized by DSF. We found that DSF root colonization and operational taxonomic unit (OTU) richness were significantly higher in sagebrush (Artemisia tridentata Nutt.) and rice grass (Achnatherum hymenoides (Roem. & Schult.) Barkworth) from invaded areas than noninvaded areas. Cheatgrass roots had similar levels of DSF colonization and OTU richness as native plants. The community composition of DSF varied with invasion in the roots and soils of native species and among the roots of the three plant species in the invaded areas. The substantial changes in DSF we observed following cheatgrass invasion argue for comparative studies of DSF function in native and non-native plant species. VL - 9 IS - 6 N1 - [Original String]:Gehring, C. A., Hayer, M. Flores-Renteria, L. Krohn, A. L., Schwartz, E. and Dijkstra, P. (In press). Cheatgrass invasion alters the abundance and composition of dark septate fungal communities in sagebrush steppe. Botany. ER - 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 - CONF T1 - Taxon-specific microbial activities explain soil carbon cycling dynamics. T2 - Ecological Society of America Y1 - 2016 A1 - Morrissey,EM A1 - RL Mau A1 - Schwartz,E A1 - Caporaso,JG A1 - P Dijkstra A1 - McHugh,T A1 - Marks,JC A1 - Price,LB A1 - Liu,CM A1 - Hungate,BA AB -

Morrissey, E.M., Mau, R.L., Schwartz, E., Caporaso, J.G., Dijkstra, P.,McHugh, T., Marks, J.C., Price, L.B., Liu, C.M. and Hungate, B.A. (2016). Taxon-specific microbial activities explain soil carbon cycling dynamics. ESA August 7-12, Fort Lauderdale.

JF - Ecological Society of America T3 - Ecological Society of America Annual Meeting PB - ESA CY - Fort Lauderdale, Florida, USA N1 - [Original String]:Morrissey, E.M., Mau, R.L., Schwartz, E., Caporaso, J.G., Dijkstra, P., McHugh, T., Marks, J.C., Price, L.B., Liu, C.M. and Hungate, B.A. (2016). Taxon-specific microbial activities explain soil carbon cycling dynamics. ESA August 7-12, Fort Lauderdale. ER - TY - CONF T1 - Taxon-Specific Responses To Whole System Carbon Cycling In The Root Microbiome. T2 - Phytobiomes from microbes to plant ecosystems Y1 - 2016 A1 - P Dijkstra A1 - RL Mau A1 - McHugh,TA A1 - BJ Koch A1 - Marks,JC A1 - van Groenigen,K-J A1 - Liu,X-J A1 - Schwartz,E A1 - Morrissey,EM A1 - Hungate,BA AB -

Dijkstra, P., Mau, R.L., McHugh, T.A., Koch, B.J., Marks, J.C., vanGroenigen, K-J., Liu, X-J. A., Schwartz, E., Morrissey, E.M. and Hungate, B.A. (2016). From Taxon-Specific Responses To Whole System Carbon Cycling In The Root Microbiome. Phytobiomes: from microbes to plant ecosystems. Nov 2016, .

JF - Phytobiomes from microbes to plant ecosystems T3 - Phytobiomes from microbes to plant ecosystems CY - Santa Fe, New Mexicao, USA N1 - [Original String]:Dijkstra, P., Mau, R.L., McHugh, T.A., Koch, B.J., Marks, J.C., van Groenigen, K-J., Liu, X-J. A., Schwartz, E., Morrissey, E.M. and Hungate, B.A. (2016). From Taxon-Specific Responses To Whole System Carbon Cycling In The Root Microbiome. Phytobiomes: from microbes to plant ecosystems. Nov 2016, Santa Fe NM. ER - TY - JOUR T1 - Dynamics of extracellular DNA decomposition and bacterial community composition in soil. JF - Soil Biology and Biochemistry Y1 - 2015 A1 - Morrissey,EM A1 - McHugh,TA A1 - Preteska,L A1 - Hayer,M A1 - P Dijkstra A1 - Hungate,BA A1 - Schwartz,E VL - 86 N1 - [Original String]:Morrissey, E.M., McHugh, T.A., Preteska, L., Hayer, M., Dijkstra, P., Hungate, B.A., and Schwartz E (2015). Dynamics of extracellular DNA decomposition and bacterial community composition in soil. Soil Biology and Biochemistry 86, 42-49. ER - TY - JOUR T1 - High carbon use efficiency in soil microbial communities is related to growth, not storage compound synthesis. JF - Soil Biology and Biochemistry Y1 - 2015 A1 - P Dijkstra A1 - Salpas,E A1 - Fairbanks,D A1 - Miller,EB A1 - Hagerty,SB A1 - KJ van Groenigen A1 - Hungate,BA A1 - Marks,JC A1 - GW Koch A1 - Schwartz,E VL - 89 N1 - [Original String]:Dijkstra, P., Salpas, E., Fairbanks, D., Miller EB, Hagerty, S.B., van Groenigen, K.J., Hungate, B.A., Marks, J.C., Koch, G.W., and Schwartz, E. (2015). High carbon use efficiency in soil microbial communities is related to growth, not storage compound synthesis. Soil Biology and Biochemistry 89, 35-43. ER - TY - CONF T1 - High carbon use efficiency is not explained by production of storage compounds. T2 - European Geophysical Union Annual Meeting Y1 - 2015 A1 - P Dijkstra A1 - KJ van Groenigen AB -

Dijkstra, P. and van Groenigen, K.J. (2015). High carbon use efficiencyis not explained by production of storage compounds. EGU April 12-17, Vienna.

JF - European Geophysical Union Annual Meeting T3 - European Geophysical Union Annual Meeting CY - Vienna, Austria N1 - [Original String]:Dijkstra, P. and van Groenigen, K.J. (2015). High carbon use efficiency is not explained by production of storage compounds. EGU April 12-17, Vienna. ER - TY - Generic T1 - Influence of varying nitrogen availability on soil microbial growth efficiency. T2 - Ecological Society of America Annual Meeting Y1 - 2015 A1 - Hagerty,SB A1 - KJ van Groenigen A1 - Schwartz,E A1 - Hungate,BA A1 - GW Koch A1 - P Dijkstra JF - Ecological Society of America Annual Meeting T3 - Ecological Society of America Annual Meeting PB - ESA CY - Baltimore, MD, USA N1 - [Original String]:Hagerty, S.B., van Groenigen, K.J., Schwartz, E., Hungate, B.A., Koch, G.W. and Dijkstra, P. (2015). Influence of varying nitrogen availability on soil microbial growth efficiency. ESA Aug 9-14, Baltimore. ER - TY - JOUR T1 - Linking soil bacterial biodiversity and soil carbon stability. JF - The ISME journal Y1 - 2015 A1 - Mau,Rebecca L A1 - Liu,Cindy M A1 - Aziz,Maliha A1 - Egbert Schwartz A1 - P Dijkstra A1 - Jane C Marks A1 - Lance B Price A1 - Keim,Paul A1 - Hungate,Bruce A KW - Bacteria KW - biodiversity KW - Biomass KW - Carbon KW - Ecosystem KW - Glucose KW - Isotopes KW - Oxygen KW - RNA, Ribosomal, 16S KW - Soil KW - Soil Microbiology AB -

Native soil carbon (C) can be lost in response to fresh C inputs, a phenomenon observed for decades yet still not understood. Using dual-stable isotope probing, we show that changes in the diversity and composition of two functional bacterial groups occur with this 'priming' effect. A single-substrate pulse suppressed native soil C loss and reduced bacterial diversity, whereas repeated substrate pulses stimulated native soil C loss and increased diversity. Increased diversity after repeated C amendments contrasts with resource competition theory, and may be explained by increased predation as evidenced by a decrease in bacterial 16S rRNA gene copies. Our results suggest that biodiversity and composition of the soil microbial community change in concert with its functioning, with consequences for native soil C stability.

VL - 9 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=25350158&ordinalpos=3&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSumhttp://www.ncbi. IS - 6 ER - TY - JOUR T1 - Responses of ecosystem carbon cycling to climate change treatments along an elevation gradient JF - Ecosystems Y1 - 2011 A1 - Wu,Z A1 - GW Koch A1 - P Dijkstra A1 - MA Bowker A1 - B Hungate VL - 14 IS - 7 ER -