Effect of the mycorrhizosphere on soil micromycete biodiversity and community structure and its relation to the rhizosphere and hyphosphere effects

Voronina, Elena

doi:10.1134/s0026261711040217

Cited by 5 publications

(7 citation statements)

References 15 publications

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“…The isolates belong to the genera Umbelopsis , Penicillium , Mortierella , Absidia (Warcup, 1951), insect or nematode parasites Beauveria (Meyling and Eilenberg, 2006) and Pochonia (Atkins et al, 2003). Umbelopsis ramanniana , different Penicillium species, Beauveria bassiana and Pochonia bulbillosa were frequently found in free soil, the rhizosphere, mycorrhizosphere and hyphosphere of spruce trees (Voronina, 2011). Additionally, Penicillium and Umbelopsis species have been described as endophytes in spruce roots (Kernaghan and Patriquin, 2011).…”

Section: Discussionmentioning

confidence: 99%

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The Ectomycorrhizospheric Habitat of Norway Spruce and Tricholoma vaccinum: Promotion of Plant Growth and Fitness by a Rich Microorganismic Community

et al. 2019

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The contribution of the mycorrhizospheric microbes in a stand of ectomycorrhizal Norway spruce ( Picea abies ) featuring mycorrhiza with the basidiomycete Tricholoma vaccinum was addressed by microbiome analysis and in vitro reconstruction of microbial as well as plant-microbe interactions. The protective role of the mycorrhizal fungus with respect to pathogen attack could be validated against Botrytis cinerea and Heterobasidion annosum in co-cultures revealing reduced pathogen growth, higher survival rate of the spruce trees and reduced symptoms on needles upon symbiosis with T. vaccinum. The community structure was shown to yield a high diversity in ECM forming basidiomycetes of Thelephorales and Agaricales associated with a rich bacterial diversity dominated by Rhizobiales with the most abundant Nitrobacter winogradski (3.9%). Isolated bacteria were then used to address plant growth promoting abilities, which included production of the phytohormone indole-3-acetic acid (performed by 74% of the bacterial isolates), siderophores (22%), and phosphate mobilization (23%). Among the isolates, mycorrhiza helper bacteria (MHB) were identified, with Bacillus cereus MRZ-1 inducing hyperbranching in T. vaccinum , supporting tree germination, shoot elongation, and root formation as well as higher mycorrhization rates. Thus, a huge pool of potential MHB and fungal community with widely distributed auxin-production potential extended the ability of T. vaccinum to form ectomycorrhiza. The forest community profited from the mycorrhizal fungus T. vaccinum , with spruce survival enhanced by 33% in microcosms using soil from the native habitat. A higher fungal abundance and diversity in cases where the tree had died during the experiment, showing that decomposition of plant litter from a dead tree supported a different community. T. vaccinum thus actively structured the community of microorganisms in its habitat.

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Section: Discussionmentioning

confidence: 99%

“…Species of Lecanicillium (Goettel et al, 2008) and Acremonium (Latch, 1994) can colonize grasses as endophytes, but were also found in the rhizosphere of healthy black spruce trees (Vujanovic et al, 2007) and Lecanicillium sp. in the hyphosphere (Voronina, 2011).…”

Section: Discussionmentioning

confidence: 99%

The Ectomycorrhizospheric Habitat of Norway Spruce and Tricholoma vaccinum: Promotion of Plant Growth and Fitness by a Rich Microorganismic Community

et al. 2019

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“…In the mycosphere of Laccaria , bacterial diversity was significantly reduced compared to the bulk soil [66]. On the other hand, fungal diversity was also relatively low in the mycorrhizospheres of Amanita and Laccaria [67]. This trend is not limited to ectomycorrhizal fungi.…”

Section: Discussionmentioning

confidence: 99%

“…In the mycosphere soil of several saprophytic mushrooms (Lachnocladiaceae, Lepiotaceae, and Marasmiaceae), pyrosequencing detected reduced microbial diversity [68]. However, some fungi showed higher or unchanged diversity in the mycosphere or mycorrhizosphere soil [67]. Therefore, reduction of microbial diversity is likely a species-specific feature among fungi such as T .…”

Section: Discussionmentioning

confidence: 99%

Distinctive Feature of Microbial Communities and Bacterial Functional Profiles in Tricholoma matsutake Dominant Soil

Fong²,

Park

et al. 2016

PLoS ONE

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Tricholoma matsutake, the pine mushroom, is a valuable forest product with high economic value in Asia, and plays an important ecological role as an ectomycorrhizal fungus. Around the host tree, T. matsutake hyphae generate a distinctive soil aggregating environment called a fairy ring, where fruiting bodies form. Because T. matsutake hyphae dominate the soil near the fairy ring, this species has the potential to influence the microbial community. To explore the influence of T. matsutake on the microbial communities, we compared the microbial community and predicted bacterial function between two different soil types—T. matsutake dominant and T. matsutake minor. DNA sequence analyses showed that fungal and bacterial diversity were lower in the T. matsutake dominant soil compared to T. matsutake minor soil. Some microbial taxa were significantly more common in the T. matsutake dominant soil across geographic locations, many of which were previously identified as mycophillic or mycorrhiza helper bacteria. Between the two soil types, the predicted bacterial functional profiles (using PICRUSt) had significantly distinct KEGG modules. Modules for amino acid uptake, carbohydrate metabolism, and the type III secretion system were higher in the T. matsutake dominant soil than in the T. matsutake minor soil. Overall, similar microbial diversity, community structure, and bacterial functional profiles of the T. matsutake dominant soil across geographic locations suggest that T. matsutake may generate a dominance effect.

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“…Mucoromycotina are fast growing, saprotrophic soil fungi that colonize fresh plant litter and that are present in the upper soil horizons at high abundances (Holdenrieder and Sieber, ). On healthy, non‐mycorrhized Norway spruce roots, zygomycetes have been isolated frequently, especially Mucor hiemalis f. corticola and Mortierella ssp (Holdenrieder and Sieber, ), and Mucorales were present at mycorrhizal roots (Voronina, ). Mucoromycetes are known to communicate for sexual reproduction via the apocarotenoid trisporoids (Burgeff, ; Schachtschabel et al ., ; Sahadevan et al ., ).…”

Section: Introductionmentioning

confidence: 99%

Influence of zygomycete‐derivedD'orenone onIAAsignalling inTricholoma‐spruce ectomycorrhiza

Wagner

Krause

David

et al. 2016

Environmental Microbiology

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Despite the rising interest in microbial communication, only few studies relate to mycorrhization and the pool of potential morphogenic substances produced by the surrounding soil community. Here, we investigated the effect exerted by the C18 - ketone β-apo-13-carotenone, D'orenone, on the ectomycorrhizal basidiomycete Tricholoma vaccinum and its symbiosis with the economically important host tree, spruce (Picea abies). D'orenone is an early intermediate in the biosynthesis of morphogens in sexual development of mucoromycetes, the trisporoids. In the ectomycorrhizal fungus T. vaccinum, D'orenone increased the production and/or release of the phytohormone indole-3-acetic acid (IAA) which had been proposed to be involved in the mutual symbiosis. The induced expression of the fungal aldehyde dehydrogenase, Ald5 is associated with IAA synthesis and excretion. In the host tree, D'orenone modulated root architecture by increasing lateral root length and hypertrophy of root cortex cells, likely via changed IAA concentrations and flux. Thus, we report for the first time on carotenoid metabolites from soil fungi affecting both ectomycorrhizal partners. The data imply a complex network of functions for secondary metabolites which act in an inter-kingdom signalling in soil.

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Effect of the mycorrhizosphere on soil micromycete biodiversity and community structure and its relation to the rhizosphere and hyphosphere effects

Cited by 5 publications

References 15 publications

The Ectomycorrhizospheric Habitat of Norway Spruce and Tricholoma vaccinum: Promotion of Plant Growth and Fitness by a Rich Microorganismic Community

The Ectomycorrhizospheric Habitat of Norway Spruce and Tricholoma vaccinum: Promotion of Plant Growth and Fitness by a Rich Microorganismic Community

Distinctive Feature of Microbial Communities and Bacterial Functional Profiles in Tricholoma matsutake Dominant Soil

Influence of zygomycete‐derivedD'orenone onIAAsignalling inTricholoma‐spruce ectomycorrhiza

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