Mycorrhizal fungi mediate the direction and strength of plant–soil feedbacks differently between arbuscular mycorrhizal and ectomycorrhizal communities

Kadowaki, Kohmei; Yamamoto, Satoshi; Sato, Hirotoshi; Tanabe, Akifumi S.; Hidaka, Amane; Toju, Hirokazu

doi:10.1038/s42003-018-0201-9

Cited by 85 publications

(84 citation statements)

References 49 publications

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“…In contrast to the case of mutual facilitation, we also predict that host-specific soil mutualists can lead to priority effects by increasing niche overlap, thus acting as a destabilizing mechanism (sensu Fukami et al 2016). Empirical evidence of such positive feedbacks comes from systems where arbuscular mycorrhizal plants compete with ectomycorrhizal plants (McGuire 2007, Bennett et al 2017, Kadowaki et al 2018. Accordingly, we suggest that experimental approaches informed by modern coexistence theory may further elucidate links between mycorrhizal strategy and plant community dynamics.…”

Section: A General Categorization Of Soil Microbial Effectsmentioning

confidence: 73%

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Effects of soil microbes on plant competition: a perspective from modern coexistence theory

Wan

2019

Ecological Monographs

110

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ETH Z€ urich, 8092 Z€ urich, Switzerland Citation: Ke, P.-J., and J. Wan. 2020. Effects of soil microbes on plant competition: a perspective from modern coexistence theory. Ecological Monographs 90(1):Abstract. Growing evidence shows that soil microbes affect plant coexistence in a variety of systems. However, since these systems vary in the impacts microbes have on plants and in the ways plants compete with each other, it is challenging to integrate results into a general predictive theory. To this end, we suggest that the concepts of niche and fitness difference from modern coexistence theory should be used to contextualize how soil microbes contribute to plant coexistence. Synthesizing a range of mechanisms under a general plant-soil microbe interaction model, we show that, depending on host specificity, both pathogens and mutualists can affect the niche difference between competing plants. However, we emphasize the need to also consider the effect of soil microbes on plant fitness differences, a role often overlooked when examining their role in plant coexistence. Additionally, since our framework predicts that soil microbes modify the importance of plant-plant competition relative to other factors for determining the outcome of competition, we suggest that experimental work should simultaneously quantify microbial effects and plant competition. Thus, we propose experimental designs that efficiently measure both processes and show how our framework can be applied to identify the underlying drivers of coexistence. Using an empirical case study, we demonstrate that the processes driving coexistence can be counterintuitive, and that our general predictive framework provides a better way to identify the true processes through which soil microbes affect coexistence.

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Section: A General Categorization Of Soil Microbial Effectsmentioning

confidence: 73%

“…, Kadowaki et al. ). Accordingly, we suggest that experimental approaches informed by modern coexistence theory may further elucidate links between mycorrhizal strategy and plant community dynamics.…”

Section: Synthesizing Microbial Effects On Plant Coexistencementioning

confidence: 99%

Effects of soil microbes on plant competition: a perspective from modern coexistence theory

Wan

2019

Ecological Monographs

110

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“…Accumulating comprehensive inventory data of microbiomes associated with whole plant communities is a prerequisite for advancing our understanding of ecosystem-scale processes. Case studies in various types of terrestrial ecosystems in diverse climatic regions will allow us to elucidate how plant species with different mycorrhizal types often coexist in natural ecosystems (Booth, 2004; Kadowaki et al, 2018) or why some ecosystems are resistant against alien plants, while others are heavily disturbed by invasive species (Mitchell and Power, 2003; Reinhart and Callaway, 2006).…”

Section: Discussionmentioning

confidence: 99%

Factors Influencing Leaf- and Root-Associated Communities of Bacteria and Fungi Across 33 Plant Orders in a Grassland

2019

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In terrestrial ecosystems, plants interact with diverse taxonomic groups of bacteria and fungi in the phyllosphere and rhizosphere. Although recent studies based on high-throughput DNA sequencing have drastically increased our understanding of plant-associated microbiomes, we still have limited knowledge of how plant species in a species-rich community differ in their leaf and root microbiome compositions. In a cool-temperate semi-natural grassland in Japan, we compared leaf- and root-associated microbiomes across 137 plant species belonging to 33 plant orders. Based on the whole-microbiome inventory data, we analyzed how sampling season as well as the taxonomy, nativeness (native or alien), lifeform (herbaceous or woody), and mycorrhizal type of host plants could contribute to variation in microbiome compositions among co-occurring plant species. The data also allowed us to explore prokaryote and fungal lineages showing preferences for specific host characteristics. The list of microbial taxa showing significant host preferences involved those potentially having some impacts on survival, growth, or environmental resistance of host plants. Overall, this study provides a platform for understanding how plant and microbial communities are linked with each other at the ecosystem level.

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“…Together with contrasting nutrient dynamics, EM and AM systems have contrasting patterns of plant–soil feedbacks influencing plant community dynamics (Tedersoo et al ., 2020). In general neutral or positive plant–soil feedbacks prevail in EM systems, compared to the negative plant–soil feedbacks prevailing in AM systems, likely resulting from contrasting effects of mycorrhizal type on soil properties and the activity of various microbial functional groups, namely antagonists such as soilborne pathogens (Bennett et al , 2017; Teste et al , 2017; Kadowaki et al , 2018). In addition to mycorrhizal symbionts, root‐associated bacteria from Rhizobiaceae and Frankiaceae families fix atmospheric N 2 and sustain plant N nutrition.…”

Section: Introductionmentioning

confidence: 99%

Plant nutrient‐acquisition strategies drive topsoil microbiome structure and function

et al. 2020

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Plant nutrient-acquisition strategies drive soil processes and vegetation performance, but their effect on the soil microbiome remains poorly understood. This knowledge is important to predict the shifts in microbial diversity and functions due to increasing changes in vegetation traits under global change. Here we documented the topsoil microbiomes of 145 boreal and temperate terrestrial sites in the Baltic region that broadly differed in vegetation type and nutritional traits, such as mycorrhizal types and symbiotic nitrogen-fixation. We found that sites dominated by arbuscular mycorrhizal (AM) vegetation harbor relatively more AM fungi, bacteria, fungal saprotrophs, and pathogens in the topsoil compared with sites dominated by ectomycorrhizal (EM) plants. These differences in microbiome composition reflect the rapid nutrient cycling and negative plant-soil feedback in AM soils. Lower fungal diversity and bacteria : fungi ratios in EM-dominated habitats are driven by monodominance of woody vegetation as well as soil acidification by EM fungi, which are associated with greater diversity and relative abundance of carbohydrate-active enzymes. Our study suggests that shifts in vegetation related to global change and land use may strongly alter the topsoil microbiome structure and function.

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Mycorrhizal fungi mediate the direction and strength of plant–soil feedbacks differently between arbuscular mycorrhizal and ectomycorrhizal communities

Cited by 85 publications

References 49 publications

Effects of soil microbes on plant competition: a perspective from modern coexistence theory

Effects of soil microbes on plant competition: a perspective from modern coexistence theory

Factors Influencing Leaf- and Root-Associated Communities of Bacteria and Fungi Across 33 Plant Orders in a Grassland

Plant nutrient‐acquisition strategies drive topsoil microbiome structure and function

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