Conserved and reproducible bacterial communities associate with extraradical hyphae of arbuscular mycorrhizal fungi
Abstract
Abstract Extraradical hyphae (ERH) of arbuscular mycorrhizal fungi (AMF) extend from plant roots into the soil environment and interact with soil microbial communities. Evidence of positive and negative interactions between AMF and soil bacteria point to functionally important ERH-associated communities. To characterize communities associated with ERH and test controls on their establishment and composition, we utilized an in-growth core system containing a live soil–sand mixture that allowed manual extraction of ERH for 16S rRNA gene amplicon profiling. Across experiments and soils, consistent enrichment of members of the Betaproteobacteriales, Myxococcales, Fibrobacterales, Cytophagales, Chloroflexales, and Cellvibrionales was observed on ERH samples, while variation among samples from different soils was observed primarily at lower taxonomic ranks. The ERH-associated community was conserved between two fungal species assayed, Glomus versiforme and Rhizophagus irregularis, though R. irregularis exerted a stronger selection and showed greater enrichment for taxa in the Alphaproteobacteria and Gammaproteobacteria. A distinct community established within 14 days of hyphal access to the soil, while temporal patterns of establishment and turnover varied between taxonomic groups. Identification of a conserved ERH-associated community is consistent with the concept of an AMF microbiome and can aid the characterization of facilitative and antagonistic interactions influencing the plant-fungal symbiosis.
- Authors:
- Publication Date:
- Research Org.:
- Univ. of Nebraska, Lincoln, NE (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Biological and Environmental Research (BER)
- OSTI Identifier:
- 1768659
- Alternate Identifier(s):
- OSTI ID: 1775488
- Grant/Contract Number:
- SC0014395
- Resource Type:
- Published Article
- Journal Name:
- The ISME Journal
- Additional Journal Information:
- Journal Name: The ISME Journal Journal Volume: 15 Journal Issue: 8; Journal ID: ISSN 1751-7362
- Publisher:
- Oxford University Press
- Country of Publication:
- United Kingdom
- Language:
- English
- Subject:
- 59 BASIC BIOLOGICAL SCIENCES; Microbiome; Symbiosis
Citation Formats
Emmett, Bryan D., Lévesque-Tremblay, Véronique, and Harrison, Maria J. Conserved and reproducible bacterial communities associate with extraradical hyphae of arbuscular mycorrhizal fungi. United Kingdom: N. p., 2021.
Web. doi:10.1038/s41396-021-00920-2.
Emmett, Bryan D., Lévesque-Tremblay, Véronique, & Harrison, Maria J. Conserved and reproducible bacterial communities associate with extraradical hyphae of arbuscular mycorrhizal fungi. United Kingdom. https://doi.org/10.1038/s41396-021-00920-2
Emmett, Bryan D., Lévesque-Tremblay, Véronique, and Harrison, Maria J. Mon .
"Conserved and reproducible bacterial communities associate with extraradical hyphae of arbuscular mycorrhizal fungi". United Kingdom. https://doi.org/10.1038/s41396-021-00920-2.
@article{osti_1768659,
title = {Conserved and reproducible bacterial communities associate with extraradical hyphae of arbuscular mycorrhizal fungi},
author = {Emmett, Bryan D. and Lévesque-Tremblay, Véronique and Harrison, Maria J.},
abstractNote = {Abstract Extraradical hyphae (ERH) of arbuscular mycorrhizal fungi (AMF) extend from plant roots into the soil environment and interact with soil microbial communities. Evidence of positive and negative interactions between AMF and soil bacteria point to functionally important ERH-associated communities. To characterize communities associated with ERH and test controls on their establishment and composition, we utilized an in-growth core system containing a live soil–sand mixture that allowed manual extraction of ERH for 16S rRNA gene amplicon profiling. Across experiments and soils, consistent enrichment of members of the Betaproteobacteriales, Myxococcales, Fibrobacterales, Cytophagales, Chloroflexales, and Cellvibrionales was observed on ERH samples, while variation among samples from different soils was observed primarily at lower taxonomic ranks. The ERH-associated community was conserved between two fungal species assayed, Glomus versiforme and Rhizophagus irregularis, though R. irregularis exerted a stronger selection and showed greater enrichment for taxa in the Alphaproteobacteria and Gammaproteobacteria. A distinct community established within 14 days of hyphal access to the soil, while temporal patterns of establishment and turnover varied between taxonomic groups. Identification of a conserved ERH-associated community is consistent with the concept of an AMF microbiome and can aid the characterization of facilitative and antagonistic interactions influencing the plant-fungal symbiosis.},
doi = {10.1038/s41396-021-00920-2},
journal = {The ISME Journal},
number = 8,
volume = 15,
place = {United Kingdom},
year = {Mon Mar 01 00:00:00 EST 2021},
month = {Mon Mar 01 00:00:00 EST 2021}
}
https://doi.org/10.1038/s41396-021-00920-2
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