Passengers and drivers of arbuscular mycorrhizal fungal communities at different scales

Hempel, Stefan

doi:10.1111/nph.15139

Cited by 18 publications

(13 citation statements)

References 14 publications

(20 reference statements)

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“…Further research, ideally on more than one site, is needed for a deeper and more comprehensive understanding of the spatiotemporal assembly of soil microbes at small scales by assessing and linking functions of bacteria and fungi with plant traits. Likewise, and within the frame of an emerging discussion as to whether AM fungal communities are more structured by the abiotic or biotic environment (Hempel, ), future studies should incorporate balanced consideration of environmental variables.…”

Section: Discussionmentioning

confidence: 99%

“…Conflicting results have been observed, however, regarding the interactions between plant community composition and AMF communities, ranging from enhanced (Wu et al ., ; Hiiesalu et al ., ) to reduced plant diversity in the presence of AMF (Antoninka et al ., ) to no relationship between plant and AMF diversity (Öpik et al ., ). These contradictory findings may be related in part to study scales (Hempel, ), since different environmental forces work at different scales (Chase, ); this also applies to AMF (Vályi et al ., ).…”

Section: Introductionmentioning

confidence: 99%

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

Goldmann

Boeddinghaus

Klemmer

et al. 2019

Environmental Microbiology

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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.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Goldmann

Boeddinghaus

Klemmer

et al. 2019

Environmental Microbiology

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“…Instead, we argue that plant and AM fungal communities may respond cooperatively to grassland extreme drought. This inconsistency could be caused by the experimental setup and the spatial and temperal scale of the research (Vályi et al 2016;Hempel 2018). Previously, plant-AM fungi interaction studies usually control one partner to investigate its effect on the other, which neglected dynamic community changes in both partners, and which may thus not be applicable to predict climate-driven community dynamics in natural ecosystems.…”

Section: Discussionmentioning

confidence: 99%

Synergistic community responses of plants and arbuscular mycorrhizal fungi to extreme droughts in a cold-temperate grassland

Fu¹,

Chen²,

Rillig³

et al. 2020

Preprint

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Mutualistic associations between plants and arbuscular mycorrhizal (AM) fungi may have profound influences on their response to climate changes. Existing theories evaluate the effects of interdependency and environmental filtering on plant-AM fungal community dynamics separately; however, abrupt environmental changes such as climate extremes can provoke duo-impacts on the metacommunity simultaneously. Here, we experimentally tested the relevance of plant and AM fungal community responses to extreme drought (chronic or intense) in a cold temperate grassland. Irrespective of drought intensities, plant species richness and productivity responses were significantly and positively correlated with AM fungal richness and also served as best predictors of AM fungal community shifts. Notably, the robustness of this community synergism increased with drought intensity, likely reflecting increased community interdependence. Network analysis showed a key role of Glomerales in AM fungal interaction with plants, suggesting specific plant-AM fungal pairing. Thus, community interdependence may underpin climate change impact on plant-AM fungal diversity patterns in grasslands.

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“…Here, the main drivers behind AM fungal community patterns were in some cases mostly spatial, in others mostly environmental (edaphic and/or climatic), and in others biotic (host plant or non‐AM fungi‐related) (Caruso, ; in this issue of New Phytologist , pp. 954–956; Hempel, , pp. 952–953).…”

Section: Mycorrhizal Fungal Community Ecologymentioning

confidence: 99%

“…Questions around the causality behind correlations in plant–fungi–soil systems are increasingly popular, but driver–passenger relationships in mycorrhizal symbiosis remain elusive (Hempel, , pp. 952–953).…”

Section: Mycorrhizal Fungal Community Ecologymentioning

confidence: 99%

Cross‐scale integration of mycorrhizal function

et al. 2018

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Passengers and drivers of arbuscular mycorrhizal fungal communities at different scales

Abstract: This article is a Commentary on Neuenkamp et al., 220: 1236–1247 and Van Geel et al., 220: 1262–1272.

Cited by 18 publications

References 14 publications

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

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

Synergistic community responses of plants and arbuscular mycorrhizal fungi to extreme droughts in a cold-temperate grassland

Cross‐scale integration of mycorrhizal function

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