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

Title: Fungal-Bacterial Cooccurrence Patterns Differ between Arbuscular Mycorrhizal Fungi and Nonmycorrhizal Fungi across Soil Niches

Journal Article · · mBio (Online)
 [1];  [1];  [1];  [2];  [3]; ORCiD logo [4];  [4];  [5]; ORCiD logo [6]
  1. Univ. of California, Berkeley, CA (United States)
  2. Univ. of Hawaii at Manoa, Honolulu, HI (United States)
  3. AgResearch Ltd., Lincoln Science Centre, Christchurch (New Zealand)
  4. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  5. Univ. of Oklahoma, Norman, OK (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  6. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Soil bacteria and fungi are known to form niche-specific communities that differ between actively growing and decaying roots. Yet almost nothing is known about the cross-kingdom interactions that frame these communities and the environmental filtering that defines these potentially friendly or competing neighbors. We explored the temporal and spatial patterns of soil fungal (mycorrhizal and nonmycorrhizal) and bacterial cooccurrence near roots of wild oat grass, Avena fatua, growing in its naturalized soil in a greenhouse experiment. Amplicon sequences of the fungal internal transcribed spacer (ITS) and bacterial 16S rRNA genes from rhizosphere and bulk soils collected at multiple plant growth stages were used to construct covariation-based networks as a step toward identifying fungal-bacterial associations. Corresponding stable-isotope-enabled metagenome-assembled genomes (MAGs) of bacteria identified in cooccurrence networks were used to inform potential mechanisms underlying the observed links. Bacterial-fungal networks were significantly different in rhizosphere versus bulk soils and between arbuscular mycorrhizal fungi (AMF) and nonmycorrhizal fungi. Over 12 weeks of plant growth, nonmycorrhizal fungi formed increasingly complex networks with bacteria in rhizosphere soils, while AMF more frequently formed networks with bacteria in bulk soils. Analysis of network-associated bacterial MAGs suggests that some of the fungal-bacterial links that we identified are potential indicators of bacterial breakdown and consumption of fungal biomass, while others intimate shared ecological niches.

Research Organization:
University of California, Berkeley, CA (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER); USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
SC0020163; SC0010570; AC52-07NA27344
OSTI ID:
1780928
Alternate ID(s):
OSTI ID: 1902596
Report Number(s):
LLNL-JRNL-826080
Journal Information:
mBio (Online), Vol. 12, Issue 2; ISSN 2150-7511
Publisher:
American Society for Microbiology (ASM)Copyright Statement
Country of Publication:
United States
Language:
English

References (89)

Interactions between mycorrhizal fungi and other soil organisms journal February 1994
FUNGuild: An open annotation tool for parsing fungal community datasets by ecological guild journal April 2016
Rhizosphere fungi actively assimilating plant-derived carbon in a grassland soil journal December 2020
Microbial interactions: from networks to models journal July 2012
Btrim: A fast, lightweight adapter and quality trimming program for next-generation sequencing technologies journal August 2011
Multinucleate Spores Contribute to Evolutionary Longevity of Asexual Glomeromycota journal April 2010
UCHIME improves sensitivity and speed of chimera detection journal June 2011
Disentangling biotic interactions, environmental filters, and dispersal limitation as drivers of species co-occurrence journal December 2017
The holistic rhizosphere: integrating zones, processes, and semantics in the soil influenced by roots journal March 2016
Effect of Fungal Hyphae on the Access of Bacteria to Phenanthrene in Soil journal January 2007
The Case for Digging Deeper: Soil Organic Carbon Storage, Dynamics, and Controls in Our Changing World journal April 2019
Determinants of community structure in the global plankton interactome journal May 2015
Plant-Growth-Promoting Rhizobacteria journal October 2009
Carbon and phosphorus exchange may enable cooperation between an arbuscular mycorrhizal fungus and a phosphate‐solubilizing bacterium journal January 2016
Highways versus pipelines: contributions of two fungal transport mechanisms to efficient bioremediation: Fungal transport mechanisms enhance bioremediation journal October 2012
Anti-fungal properties of chitinolytic dune soil bacteria journal February 1998
Chalara heteroderae a fungal antagonist that parasitizes hyphae of Bipolaris sorokiniana journal January 1986
Bacterial diversity among the fruit bodies of ectomycorrhizal and saprophytic fungi and their corresponding hyphosphere soils journal August 2018
Dynamic root exudate chemistry and microbial substrate preferences drive patterns in rhizosphere microbial community assembly journal March 2018
Driving forces of soil bacterial community structure, diversity, and function in temperate grasslands and forests journal September 2016
Correlation Network Analysis Applied to Complex Biofilm Communities journal December 2011
The rhizosphere and hyphosphere differ in their impacts on carbon and nitrogen cycling in forests exposed to elevated CO 2 journal October 2014
Phylogenetic Molecular Ecological Network of Soil Microbial Communities in Response to Elevated CO2 journal July 2011
Food-web structure and network theory: The role of connectance and size journal September 2002
Hitchhikers on the fungal highway: The helper effect for bacterial migration via fungal hyphae journal April 2011
Use and abuse of correlation analyses in microbial ecology journal June 2019
Fungal community assembly in drought-stressed sorghum shows stochasticity, selection, and universal ecological dynamics journal January 2020
Absence of nuclear DNA synthesis in vesicular-arbuscular mycorrhizal fungi during in vitro development journal January 1989
Rhizosphere Carbon Turnover from Cradle to Grave: The Role of Microbe–Plant Interactions book August 2020
Insights on the susceptibility of plant pathogenic fungi to phenazine-1-carboxylic acid and its chemical derivatives journal June 2013
Interactions between an arbuscular mycorrhizal fungus and a soil microbial community mediating litter decomposition journal January 2012
The role of rhizodeposits in shaping rhizomicrobiome journal December 2019
Strong succession in arbuscular mycorrhizal fungal communities journal August 2018
The Microbiome of Pinus muricata Ectomycorrhizae: Community Assemblages, Fungal Species Effects, and Burkholderia as Important Bacteria in Multipartnered Symbioses journal February 2015
Availability of phosphate and potassium as the result of interactions between root and soil in the rhizosphere journal January 1986
Resource availability underlies the plant-fungal diversity relationship in a grassland ecosystem journal December 2017
Investigating the mechanisms for the opposing pH relationships of fungal and bacterial growth in soil journal June 2010
An arbuscular mycorrhizal fungus significantly modifies the soil bacterial community and nitrogen cycling during litter decomposition: AMF alters soil bacterial community and N cycling journal January 2013
FLASH: fast length adjustment of short reads to improve genome assemblies journal September 2011
Observations of Nuclei in Vesicular-Arbuscular Mycorrhizal Fungi journal March 1987
Rhizophagus irregularis influences As and P uptake by alfafa and the neighboring non-host pepperweed growing in an As-contaminated soil journal May 2018
Bacterial-Fungal Interactions: Hyphens between Agricultural, Clinical, Environmental, and Food Microbiologists journal November 2011
Microbial hotspots and hot moments in soil: Concept & review journal April 2015
Search and clustering orders of magnitude faster than BLAST journal August 2010
Living in a fungal world: impact of fungi on soil bacterial niche development journal September 2005
Successional Trajectories of Rhizosphere Bacterial Communities over Consecutive Seasons journal August 2015
Towards a unified paradigm for sequence-based identification of fungi journal September 2013
DNA Content of Vesicular-Arbuscular Mycorrhizal Fungal Spores journal March 1990
Molecular ecological network analyses journal January 2012
Taking the Fungal Highway:  Mobilization of Pollutant-Degrading Bacteria by Fungi journal June 2005
Status of nuclear division in arbuscular mycorrhizal fungi during in vitro development journal March 1993
Wall texture in the spore of a vesicular-arbuscular mycorrhizal fungus journal February 1984
Exploiting the fungal highway: development of a novel tool for the in situ isolation of bacteria migrating along fungal mycelium journal October 2015
Estimation of the influx and the radius of the depletion zone developing around a root during nutrient uptake journal August 1995
Phosphorus depletion and pH decrease at the root–soil and hyphae–soil interfaces of VA mycorrhizal white clover fertilized with ammonium journal November 1991
Influence of arbuscular mycorrhizal mycelial exudates on soil bacterial growth and community structure: Effects of AM mycelial exudates on soil bacteria journal August 2007
Reproducible, interactive, scalable and extensible microbiome data science using QIIME 2 journal July 2019
Extension of the phosphorus depletion zone in VA-mycorrhizal white clover in a calcareous soil journal September 1991
Using network analysis to explore co-occurrence patterns in soil microbial communities journal September 2011
‘Candidatus Moeniiplasma glomeromycotorum’, an endobacterium of arbuscular mycorrhizal fungi
  • Naito, Mizue; Desirò, Alessandro; González, Jonathan B.
  • International Journal of Systematic and Evolutionary Microbiology, Vol. 67, Issue 5, p. 1177-1184 https://doi.org/10.1099/ijsem.0.001785
journal May 2017
The rhizosphere microbiome and plant health journal August 2012
Fungal diversity regulates plant-soil feedbacks in temperate grassland journal November 2018
Stability of Ecological Communities and the Architecture of Mutualistic and Trophic Networks journal August 2010
Cellular interactions between arbuscular mycorrhizal fungi and rhizosphere bacteria journal March 1996
Growth and symbiotic effectiveness of an arbuscular mycorrhizal fungus in organic matter in competition with soil bacteria: Interactions between AM fungi and bacteria in organic matter journal March 2011
Deciphering Underlying Drivers of Disease Suppressiveness Against Pathogenic Fusarium oxysporum journal November 2019
Basic local alignment search tool journal October 1990
Bacterial associations with decaying wood: a review journal January 1996
Interdomain ecological networks between plants and microbes journal September 2019
Interactions between mycorrhizal fungi and mycorrhizosphere bacteria during mineral weathering: Budget analysis and bacterial quantification journal September 2009
Impact of white-rot fungi on numbers and community composition of bacteria colonizing beech wood from forest soil: Impact of white-rot fungi on bacteria colonizing wood journal February 2008
Universal and species-specific bacterial ‘fungiphiles’ in the mycospheres of different basidiomycetous fungi journal February 2009
Bacterial community establishment in native and non-native soils and the effect of fungal colonization journal January 2013
Interactions between arbuscular mycorrhizal fungi and bacteria and their potential for stimulating plant growth journal January 2006
Ecological networks and their fragility journal July 2006
Wood-Decaying Ascomycetes and Fungi Imperfecti journal July 1966
Modularity and community structure in networks journal May 2006
Evolutionary history of mycorrhizal symbioses and global host plant diversity journal January 2018
The modularity of pollination networks journal December 2007
Indices, Graphs and Null Models: Analyzing Bipartite Ecological Networks journal February 2009
Self versus non-self: fungal cell wall degradation in Trichoderma journal January 2012
Tansley Review No. 76 Helper bacteria: a new dimension to the mycorrhizal symbiosis journal October 1994
Co‐occurrence is not evidence of ecological interactions journal May 2020
Arbuscular mycorrhizal fungi influence growth, osmotic adjustment and photosynthesis of citrus under well-watered and water stress conditions journal March 2006
Zygospores and asexual spores of Gigaspora decipiens, an arbuscular mycorrhizal fungus journal October 1990
The interconnected rhizosphere: High network complexity dominates rhizosphere assemblages journal June 2016
Network succession reveals the importance of competition in response to emulsified vegetable oil amendment for uranium bioremediation: Competition in bioremediation system journal August 2015
Microbial interactions and biocontrol in the rhizosphere journal March 2001
Folsomia candida, a “fungivorous” collembolan, feeds preferentially on nematodes rather than soil fungi journal April 1996