Unraveling spatiotemporal variability of arbuscular mycorrhizal fungi in a temperate grassland plot

Summary Soils provide a heterogeneous environment varying in space and time; consequently, the biodiversity of soil microorganisms also differs spatially and temporally. For soil microbes tightly associated with plant roots, such as arbuscular mycorrhizal fungi (AMF), the diversity of plant partners...

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Veröffentlicht in:	Environmental microbiology Jg. 22; H. 3; S. 873 - 888
Hauptverfasser:	Goldmann, Kezia, Boeddinghaus, Runa S., Klemmer, Sandra, Regan, Kathleen M., Heintz‐Buschart, Anna, Fischer, Markus, Prati, Daniel, Piepho, Hans‐Peter, Berner, Doreen, Marhan, Sven, Kandeler, Ellen, Buscot, François, Wubet, Tesfaye
Format:	Journal Article
Sprache:	Englisch
Veröffentlicht:	Hoboken, USA John Wiley & Sons, Inc 01.03.2020 Wiley Subscription Services, Inc
Schlagworte:	Arbuscular mycorrhizas Biodiversity Biomass DNA environmental factors Fungi Germany Grassland Grassland management Grasslands Herbivores Heterogeneity microbiome Microbiomes Microorganisms Mycorrhizae - genetics Mycorrhizae - physiology mycorrhizal fungi Plant diversity Plant roots Plant Roots - microbiology Plant species Plants - microbiology ribosomal DNA RNA, Ribosomal, 18S - genetics roots Seasonal variation Seasonal variations Seasons sequence analysis Soil Soil - chemistry Soil analysis Soil Microbiology Soil microorganisms Soil properties soil sampling Soil texture Soils spatial variation Species richness Symbionts Texture Variation Germany
ISSN:	1462-2912, 1462-2920, 1462-2920
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Zusammenfassung:	Summary Soils provide a heterogeneous environment varying in space and time; consequently, the biodiversity of soil microorganisms also differs spatially and temporally. For soil microbes tightly associated with plant roots, such as arbuscular mycorrhizal fungi (AMF), the diversity of plant partners and seasonal variability in trophic exchanges between the symbionts introduce additional heterogeneity. To clarify the impact of such heterogeneity, we investigated spatiotemporal variation in AMF diversity on a plot scale (10 × 10 m) in a grassland managed at low intensity in southwest Germany. AMF diversity was determined using 18S rDNA pyrosequencing analysis of 360 soil samples taken at six time points within a year. We observed high AMF alpha‐ and beta‐diversity across the plot and at all investigated time points. Relationships were detected between spatiotemporal variation in AMF OTU richness and plant species richness, root biomass, minimal changes in soil texture and pH. The plot was characterized by high AMF turnover rates with a positive spatiotemporal relationship for AMF beta‐diversity. However, environmental variables explained only ≈20% of the variation in AMF communities. This indicates that the observed spatiotemporal richness and community variability of AMF was largely independent of the abiotic environment, but related to plant properties and the cooccurring microbiome.
Bibliographie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23 These authors contributed equally to this work. Present address: UFZ – Helmholtz Centre for Environmental Research, Department of Community Ecology, Theodor‐Lieser‐Straße 4, 06120 Halle (Saale), Germany.
ISSN:	1462-2912 1462-2920 1462-2920
DOI:	10.1111/1462-2920.14653