skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Large Blooms of Bacillales (Firmicutes) Underlie the Response to Wetting of Cyanobacterial Biocrusts at Various Stages of Maturity

Journal Article · · mBio (Online)
ORCiD logo [1];  [2];  [3];  [1];  [1];  [4];  [5];  [6]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Arizona State Univ., Tempe, AZ (United States); Univ. de Bourgogne, Dijon (France)
  3. Helmholtz Centre for Environmental Research-UFZ, Leipzig (Germany)
  4. Arizona State Univ., Tempe, AZ (United States)
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
  6. CEH-Oxford

Biological soil crusts (biocrusts) account for a substantial portion of primary production in dryland ecosystems. They successionally mature to deliver a suite of ecosystem services, such as carbon sequestration, water retention and nutrient cycling, and climate regulation. Biocrust assemblages are extremely well adapted to survive desiccation and to rapidly take advantage of the periodic precipitation events typical of arid ecosystems. Here we focus on the wetting response of incipient cyanobacterial crusts as they mature from “light” to “dark.” We sampled a cyanobacterial biocrust chronosequence before (dry) and temporally following a controlled wetting event and used high-throughput 16S rRNA and rRNA gene sequencing to monitor the dynamics of microbial response. Overall, shorter-term changes in phylogenetic beta diversity attributable to periodic wetting were as large as those attributable to biocrust successional stage. Notably, more mature crusts showed significantly higher resistance to precipitation disturbance. A large bloom of a few taxa within the Firmicutes, primarily in the order Bacillales, emerged 18 h after wetting, while filamentous crust-forming cyanobacteria showed variable responses to wet-up across the successional gradient, with populations collapsing in less-developed light crusts but increasing in later-successional-stage dark crusts. Overall, the consistent Bacillales bloom accompanied by the variable collapse of pioneer cyanobacteria of the Oscillatoriales order across the successional gradient suggests that the strong response of few organisms to a hydration pulse with the mortality of the autotroph might have important implications for carbon (C) balance in semiarid ecosystems. IMPORTANCE Desert biological soil crusts are terrestrial topsoil microbial communities common to arid regions that comprise 40% of Earth’s terrestrial surface. They successionally develop over years to decades to deliver a suite of ecosystem services of local and global significance. Ecosystem succession toward maturity has been associated with both resistance and resilience to disturbance. Recent work has shown that the impacts of both climate change and physical disturbance on biocrusts increase the potential for successional resetting. A larger proportion of biocrusts are expected to be at an early developmental stage, hence increasing susceptibility to changes in precipitation frequencies. Therefore, it is essential to characterize how biocrusts respond to wetting across early developmental stages. In this study, we document the wetting response of microbial communities from a biocrust chronosequence. Overall, our results suggest that the cumulative effects of altered precipitation frequencies on the stability of biocrusts will depend on biocrust maturity.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1465433
Journal Information:
mBio (Online), Vol. 9, Issue 2; Related Information: © 2018 Karaoz et al.; ISSN 2150-7511
Publisher:
American Society for MicrobiologyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 16 works
Citation information provided by
Web of Science

References (92)

Microenvironments and Microscale Productivity of Cyanobacterial Desert Crusts1 journal October 1996
Phylogenetic Resolution and Quantifying the Phylogenetic Diversity and Dispersion of Communities journal February 2009
Microbial interactions: from networks to models journal July 2012
UCHIME improves sensitivity and speed of chimera detection journal June 2011
rrnDB: improved tools for interpreting rRNA gene abundance in bacteria and archaea and a new foundation for future development journal November 2014
Nitrogen Cycling Mediated by Biological soil Crusts and Arbuscular Mycorrhizal Fungi journal June 2003
Mineral and Bacterial Diversities of Desert Sand Grains from South-East Morocco journal January 2010
The Variability of the 16S rRNA Gene in Bacterial Genomes and Its Consequences for Bacterial Community Analyses journal February 2013
Revision of the genus Massilia La Scola et al. 2000, with an emended description of the genus and inclusion of all species of the genus Naxibacter as new combinations, and proposal of Massilia consociata sp. nov. journal July 2010
Bacteria increase arid-land soil surface temperature through the production of sunscreens journal January 2016
Microbial soil respiration and its dependency on carbon inputs, soil temperature and moisture journal September 2007
Common and distinguishing features of the bacterial and fungal communities in biological soil crusts and shrub root zone soils journal February 2014
PyNAST: a flexible tool for aligning sequences to a template alignment journal November 2009
Disturbance of biological soil crusts: impacts on potential wind erodibility of sandy desert soils in southeastern Utah journal December 1997
Phylogenetic and Morphological Diversity of Cyanobacteria in Soil Desert Crusts from the Colorado Plateau journal April 2001
Precipitation pulse size effects on Sonoran Desert soil microbial crusts journal December 2003
Taxonomic relatedness shapes bacterial assembly in activated sludge of globally distributed wastewater treatment plants: Taxonomic relatedness shapes AS bacterial assembly journal January 2014
Responses of soil bacterial and fungal communities to extreme desiccation and rewetting journal July 2013
Active and total microbial communities in forest soil are largely different and highly stratified during decomposition journal July 2011
Increased temperature and altered summer precipitation have differential effects on biological soil crusts in a dryland ecosystem journal May 2012
Bacillus koreensis sp. nov., a spore-forming bacterium, isolated from the rhizosphere of willow roots in Korea journal January 2006
Correlation detection strategies in microbial data sets vary widely in sensitivity and precision journal February 2016
Rainfall-induced carbon dioxide pulses result from sequential resuscitation of phylogenetically clustered microbial groups journal June 2012
Disentangling niche and neutral influences on community assembly: assessing the performance of community phylogenetic structure tests journal September 2009
The ecological coherence of high bacterial taxonomic ranks journal June 2010
Diversity and structure of soil bacterial communities associated with vultures in an African savanna journal June 2012
Rapid Method for Coextraction of DNA and RNA from Natural Environments for Analysis of Ribosomal DNA- and rRNA-Based Microbial Community Composition journal December 2000
FastTree 2 – Approximately Maximum-Likelihood Trees for Large Alignments journal March 2010
Inferring Correlation Networks from Genomic Survey Data journal September 2012
UniFrac: an effective distance metric for microbial community comparison journal September 2010
Phylogenies and Community Ecology journal November 2002
Testing the spatial phylogenetic structure of local communities: statistical performances of different null models and test statistics on a locally neutral community: Testing spatial community phylogenetic structure journal August 2008
Pyrosequencing enumerates and contrasts soil microbial diversity journal July 2007
Pattern pluralism and the Tree of Life hypothesis journal January 2007
Mapping the niche space of soil microorganisms using taxonomy and traits journal August 2012
Temperature Drives the Continental-Scale Distribution of Key Microbes in Topsoil Communities journal June 2013
Dynamic cyanobacterial response to hydration and dehydration in a desert biological soil crust journal June 2013
Microbial communities acclimate to recurring changes in soil redox potential status: Fluctuating redox microbial communities journal December 2010
Search and clustering orders of magnitude faster than BLAST journal August 2010
Patton's Tracks in the Mojave Desert, USA: An Ecological Legacy journal January 2002
phyloseq: An R Package for Reproducible Interactive Analysis and Graphics of Microbiome Census Data journal April 2013
UPARSE: highly accurate OTU sequences from microbial amplicon reads journal August 2013
An examination of the bacteriophages and bacteria of the Namib desert journal August 2008
Cross-biome metagenomic analyses of soil microbial communities and their functional attributes journal December 2012
Exometabolite niche partitioning among sympatric soil bacteria journal September 2015
RAxML version 8: a tool for phylogenetic analysis and post-analysis of large phylogenies journal January 2014
Small-Scale Vertical Distribution of Bacterial Biomass and Diversity in Biological Soil Crusts from Arid Lands in the Colorado Plateau journal November 2003
A global network of coexisting microbes from environmental and whole-genome sequence data journal May 2010
High Bacterial Diversity of Biological Soil Crusts in Water Tracks over Permafrost in the High Arctic Polar Desert journal August 2013
Telluria mixta (Pseudomonas mixta Bowman, Sly, and Hayward 1988) gen. nov., comb. nov., and Telluria chitinolytica sp. nov., Soil-Dwelling Organisms Which Actively Degrade Polysaccharides journal January 1993
Exploring the Phylogenetic Structure of Ecological Communities: An Example for Rain Forest Trees journal August 2000
Export of nitrogenous compounds due to incomplete cycling within biological soil crusts of arid lands journal March 2007
Bacillus beringensis sp. nov., a psychrotolerant bacterium isolated from the Bering Sea journal October 2010
EFFECT OF WATER POTENTIAL ON A MICROCOLEUS (CYANOPHYCEAE) FROM A DESERT CRUST 1 journal September 1975
The vertical microdistribution of cyanobacteria and green algae within desert crusts and the development of the algal crusts journal November 2003
Bacillus korlensis sp. nov., a moderately halotolerant bacterium isolated from a sand soil sample in China journal June 2009
Introducing mothur: Open-Source, Platform-Independent, Community-Supported Software for Describing and Comparing Microbial Communities journal October 2009
Cytoscape: A Software Environment for Integrated Models of Biomolecular Interaction Networks journal November 2003
Deciphering microbial interactions and detecting keystone species with co-occurrence networks journal May 2014
QIIME allows analysis of high-throughput community sequencing data journal April 2010
Effect of biological soil crusts on soil elemental concentrations: implications for biogeochemistry and as traceable biosignatures of ancient life on land journal June 2009
Estimates of global cyanobacterial biomass and its distribution journal August 2003
Microbial seed banks: the ecological and evolutionary implications of dormancy journal January 2011
Interactions between Bacillus anthracis and Plants May Promote Anthrax Transmission journal June 2014
Dryland soil microbial communities display spatial biogeographic patterns associated with soil depth and soil parent material journal May 2013
Tumebacillus ginsengisoli sp. nov., isolated from soil of a ginseng field journal August 2010
Phylogenetic structure of angiosperm communities during tropical forest succession journal October 2009
The desert of Tataouine: an extreme environment that hosts a wide diversity of microorganisms and radiotolerant bacteria journal March 2006
Massilia kyonggiensis sp. nov., isolated from forest soil in Korea journal May 2014
MUSCLE: multiple sequence alignment with high accuracy and high throughput journal March 2004
ggplot2: Elegant Graphics for Data Analysis: Book Reviews journal January 2011
The Evolution of a Capacity to Build Supra-Cellular Ropes Enabled Filamentous Cyanobacteria to Colonize Highly Erodible Substrates journal November 2009
Elucidating the microbial resuscitation cascade in biological soil crusts following a simulated rain event: Microbial resuscitation in biological soil crusts journal May 2013
Niche partitioning of bacterial communities in biological crusts and soils under grasses, shrubs and trees in the Kalahari journal April 2014
Picante: R tools for integrating phylogenies and ecology journal April 2010
Contribution of cryptogamic covers to the global cycles of carbon and nitrogen journal June 2012
Precipitation pulses and soil CO 2 flux in a Sonoran Desert ecosystem journal February 2007
Biological soil crusts accelerate the nitrogen cycle through large NO and HONO emissions in drylands journal November 2015
Chimeric 16S rRNA sequence formation and detection in Sanger and 454-pyrosequenced PCR amplicons journal January 2011
Toward a Census of Bacteria in Soil journal January 2006
Biogeographical patterns and mechanisms of microbial community assembly that underlie successional biocrusts across northern China journal February 2021
Microbial community structure and functional properties in permanently and seasonally flooded areas in Poyang Lake journal March 2020
Database resources of the National Center for Biotechnology Information journal January 2006
Systems Analysis of Gut Microbiome Influence on Metabolic Disease in HIV-Positive and High-Risk Populations journal June 2021
Succession of endophytic fungi and arbuscular mycorrhizal fungi associated with the growth of plant and their correlation with secondary metabolites in the roots of plants journal April 2021
Toward a census of bacteria in soil journal January 2005
Database resources of the National Center for Biotechnology Information journal October 2020
RAxML version 8: a tool for phylogenetic analysis and post-analysis of large phylogenies text January 2014
Database resources of the National Center for Biotechnology Information journal December 2007
ggplot2: Elegant Graphics for Data Analysis journal January 2010
A global network of coexisting microbes from environmental and whole-genome sequence data text January 2010
Database resources of the National Center for Biotechnology Information journal November 2018

Cited By (1)