Journal ArticleDOI
An arbuscular mycorrhizal fungus significantly modifies the soil bacterial community and nitrogen cycling during litter decomposition
Erin E. Nuccio,Angela Hodge,Jennifer Pett-Ridge,Donald J. Herman,Peter K. Weber,Mary K. Firestone +5 more
TLDR
The results suggest that the AMF primarily took up N in the inorganic form, and N export is one mechanism by which AMF could modify the soil microbial community and decomposition processes.Abstract:
Arbuscular mycorrhizal fungi (AMF) perform an important ecosystem service by improving plant nutrient capture from soil, yet little is known about how AMF influence soil microbial communities during nutrient uptake. We tested whether an AMF modifies the soil microbial community and nitrogen cycling during litter decomposition. A two-chamber microcosm system was employed to create a root-free soil environment to control AMF access to (13) C- and (15) N-labelled root litter. Using a 16S rRNA gene microarray, we documented that approximately 10% of the bacterial community responded to the AMF, Glomus hoi. Taxa from the Firmicutes responded positively to AMF, while taxa from the Actinobacteria and Comamonadaceae responded negatively to AMF. Phylogenetic analyses indicate that AMF may influence bacterial community assembly processes. Using nanometre-scale secondary ion mass spectrometry (NanoSIMS) we visualized the location of AMF-transported (13) C and (15) N in plant roots. Bulk isotope ratio mass spectrometry revealed that the AMF exported 4.9% of the litter (15) N to the host plant (Plantago lanceolata L.), and litter-derived (15) N was preferentially exported relative to litter-derived (13) C. Our results suggest that the AMF primarily took up N in the inorganic form, and N export is one mechanism by which AMF could modify the soil microbial community and decomposition processes.read more
Citations
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Journal ArticleDOI
Microbial interactions within the plant holobiont.
TL;DR: The fundamental role of microbe-microbe interactions (prokaryotes and micro-eukaryotes) for microbial community structure and plant health is discussed and a conceptual framework illustrating that interactions among microbiota members are critical for the establishment and the maintenance of host-microbial homeostasis is provided.
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.
Journal ArticleDOI
Bacterial-fungal interactions: ecology, mechanisms and challenges.
Aurélie Deveau,Gregory Bonito,Jessie K. Uehling,Jessie K. Uehling,Mathieu Paoletti,Matthias Becker,Saskia Bindschedler,Stéphane Hacquard,Vincent Hervé,Jessy Labbé,Jessy Labbé,Olga A. Lastovetsky,Sophie Mieszkin,Larry J. Millet,Balázs Vajna,Pilar Junier,Paola Bonfante,Bastiaan P. Krom,Stefan Olsson,Jan Dirk van Elsas,Lukas Y. Wick +20 more
TL;DR: A particular focus is placed on the understanding of BFI within complex microbial communities and in regard of the metaorganism concept, as well as recent discoveries that clarify the (molecular) mechanisms involved in bacterial-fungal relationships.
Journal ArticleDOI
Arbuscular mycorrhiza and nitrogen: implications for individual plants through to ecosystems
TL;DR: This review discusses the current evidence for AMF N uptake, transport and plant transfer under different experimental conditions and highlights key questions that remain to be resolved, both in relation to host plant and fungal N nutrition.
Journal ArticleDOI
Stability and succession of the rhizosphere microbiota depends upon plant type and soil composition
TL;DR: Plants exert strong selection on the rhizosphere microbiota but soil composition is critical to its stability, as two abundant bacteria are shown to promote plant growth, but in Brassica the pathogen Olpidium brassicae came to dominate the fungal community.
References
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Journal ArticleDOI
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