Soil microbial community responses to multiple experimental climate change drivers
TLDR
The results indicate that climate change drivers and their interactions may cause changes in bacterial and fungal overall abundance; however, changes in precipitation tended to have a much greater effect on the community composition.Abstract:
Researchers agree that climate change factors such as rising atmospheric [CO2] and warming will likely interact to modify ecosystem properties and processes. However, the response of the microbial communities that regulate ecosystem processes is less predictable. We measured the direct and interactive effects of climatic change on soil fungal and bacterial communities (abundance and composition) in a multifactor climate change experiment that exposed a constructed old-field ecosystem to different atmospheric CO2 concentration (ambient, +300 ppm), temperature (ambient, +3 degrees C), and precipitation (wet and dry) might interact to alter soil bacterial and fungal abundance and community structure in an old-field ecosystem. We found that (i) fungal abundance increased in warmed treatments; (ii) bacterial abundance increased in warmed plots with elevated atmospheric [CO2] but decreased in warmed plots under ambient atmospheric [CO2]; (iii) the phylogenetic distribution of bacterial and fungal clones and their relative abundance varied among treatments, as indicated by changes in 16S rRNA and 28S rRNA genes; (iv) changes in precipitation altered the relative abundance of Proteobacteria and Acidobacteria, where Acidobacteria decreased with a concomitant increase in the Proteobacteria in wet relative to dry treatments; and (v) changes in precipitation altered fungal community composition, primarily through lineage specific changes within a recently discovered group known as soil clone group I. Taken together, our results indicate that climate change drivers and their interactions may cause changes in bacterial and fungal overall abundance; however, changes in precipitation tended to have a much greater effect on the community composition. These results illustrate the potential for complex community changes in terrestrial ecosystems under climate change scenarios that alter multiple factors simultaneously.read more
Citations
More filters
Journal ArticleDOI
UniFrac: an effective distance metric for microbial community comparison
TL;DR: It is confirmed with actual sequence data that UniFrac values can be influenced by the number of sequences/sample, and sequence jackknifing is recommended to avoid this issue.
Journal ArticleDOI
Considering fungal:bacterial dominance in soils – Methods, controls, and ecosystem implications
TL;DR: Many of the potential reasons why expectations related to fungal:bacterial dominance were not met are explored, highlighting areas where future research, especially furthering a basic understanding of the ecology of bacteria and fungi, is needed.
Journal ArticleDOI
Microorganisms and climate change: terrestrial feedbacks and mitigation options
TL;DR: To improve the prediction of climate models, it is important to understand the mechanisms by which microorganisms regulate terrestrial greenhouse gas flux, which involves consideration of the complex interactions that occur between microorganisms and other biotic and abiotic factors.
Journal ArticleDOI
Distinct Microbial Communities within the Endosphere and Rhizosphere of Populus deltoides Roots across Contrasting Soil Types
Neil Gottel,Hector F. Castro,Hector F. Castro,Marilyn K. Kerley,Zamin Yang,Dale A. Pelletier,Mircea Podar,Mircea Podar,Tatiana Karpinets,Tatiana Karpinets,Ed Uberbacher,Gerald A. Tuskan,Gerald A. Tuskan,Rytas Vilgalys,Mitchel J. Doktycz,Christopher W. Schadt,Christopher W. Schadt +16 more
TL;DR: Analysis of microbial communities from the root endophytic and rhizospheric habitats of Populus deltoides in mature natural trees from both upland and bottomland sites in central Tennessee demonstrates that root endophical communities are distinct assemblages rather than opportunistic subsets of the rhizosphere.
Journal ArticleDOI
Direct and indirect effects of climate change on soil microbial and soil microbial‐plant interactions: What lies ahead?
Aimée T. Classen,Aimée T. Classen,Maja K. Sundqvist,Maja K. Sundqvist,Jeremiah A. Henning,Gregory S. Newman,Jessica A. M. Moore,Melissa A. Cregger,Leigh C. Moorhead,Leigh C. Moorhead,Courtney M. Patterson +10 more
TL;DR: How climatic change affects soil microbes and soil microbe-plant interactions directly and indirectly is explored, and what ramifications changes in these interactions may have on the composition and function of ecosystems are discussed.
References
More filters
Journal ArticleDOI
Clustal w: improving the sensitivity of progressive multiple sequence alignment through sequence weighting, position-specific gap penalties and weight matrix choice
TL;DR: The sensitivity of the commonly used progressive multiple sequence alignment method has been greatly improved and modifications are incorporated into a new program, CLUSTAL W, which is freely available.
Journal ArticleDOI
Bioedit: a user-friendly biological sequence alignment editor and analysis program for windows 95/98/ nt
Book
Bergey's Manual of Systematic Bacteriology
TL;DR: BCL3 and Sheehy cite Bergey's manual of determinative bacteriology of which systematic bacteriology, first edition, is an expansion.
Journal ArticleDOI
Profiling of complex microbial populations by denaturing gradient gel electrophoresis analysis of polymerase chain reaction-amplified genes coding for 16S rRNA
TL;DR: Analysis of the genomic DNA from a bacterial biofilm grown under aerobic conditions suggests that sulfate-reducing bacteria, despite their anaerobicity, were present in this environment.
Related Papers (5)
Toward an ecological classification of soil bacteria.
Microbial stress‐response physiology and its implications for ecosystem function
QIIME allows analysis of high-throughput community sequencing data.
J. Gregory Caporaso,Justin Kuczynski,Jesse Stombaugh,Kyle Bittinger,Frederic D. Bushman,Elizabeth K. Costello,Noah Fierer,Antonio Gonzalez Peña,Julia K. Goodrich,Jeffrey I. Gordon,Gavin A. Huttley,Scott T. Kelley,Dan Knights,Jeremy E. Koenig,Ruth E. Ley,Catherine A. Lozupone,Daniel McDonald,Brian D. Muegge,Meg Pirrung,Jens Reeder,Joel Sevinsky,Peter J. Turnbaugh,William A. Walters,Jeremy Widmann,Tanya Yatsunenko,Jesse R. Zaneveld,Rob Knight,Rob Knight +27 more