ArticleThe ISME journal2013
Carbon availability triggers the decomposition of plant litter and assimilation of nitrogen by an ectomycorrhizal fungus.
Article in The ISME journal, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.
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Who cites it
36 citing papers in PubMed, 144 citations in OpenAlex.
- Plasticity of symbiotroph-saprotroph lifestyles of Piloderma croceum associated with Quercus robur L.Communications biology · 2025Article
- A Model of the Ectomycorrhizal Contribution to Forest Soil C and N Dynamics and Tree N Supply Within the EFIMOD3 Model System.Plants (Basel, Switzerland) · 2025Article
- Mycorrhizal symbiosis and the nitrogen nutrition of forest trees.Applied microbiology and biotechnology · 2024Review
- Extreme overall mushroom genome expansion in Mycena s.s. irrespective of plant hosts or substrate specializations.Cell genomics · 2024Article
- Co-Effects of Nitrogen Fertilizer and Straw-Decomposing Microbial Inoculant on Decomposition and Transformation of Field Composted Wheat Straw.Life (Basel, Switzerland) · 2023Article
- Fungi in Permafrost-Affected Soils of the Canadian Arctic: Horizon- and Site-Specific Keystone Taxa Revealed by Co-Occurrence Network.Microorganisms · 2021Article
- Evolution of Fungal Carbohydrate-Active Enzyme Portfolios and Adaptation to Plant Cell-Wall Polymers.Journal of fungi (Basel, Switzerland) · 2021Review
- Shifts in the Abundances of Saprotrophic and Ectomycorrhizal Fungi With Altered Leaf Litter Inputs.Frontiers in plant science · 2021Article
- Large-scale genome sequencing of mycorrhizal fungi provides insights into the early evolution of symbiotic traits.Nature communications · 2020Article
- Article
- Metabarcoding on both environmental DNA and RNA highlights differences between fungal communities sampled in different habitats.PloS one · 2020Article
- Article
- Influence of Ammonium on Formation of Mineral-Associated Organic Carbon by an Ectomycorrhizal Fungus.Applied and environmental microbiology · 2019Article
- Digging Deeper: In Search of the Mechanisms of Carbon and Nitrogen Exchange in Ectomycorrhizal Symbioses.Frontiers in plant science · 2019Review
- The continuing relevance of "older" mycorrhiza literature: insights from the work of John Laker Harley (1911-1990).Mycorrhiza · 2018Article
- Grazing-induced microbiome alterations drive soil organic carbon turnover and productivity in meadow steppe.Microbiome · 2018Article
- Contrasting effects of ectomycorrhizal fungi on early and late stage decomposition in a boreal forest.The ISME journal · 2018Article
- Bacterial diversity among the fruit bodies of ectomycorrhizal and saprophytic fungi and their corresponding hyphosphere soils.Scientific reports · 2018Article
- Evolutionary dynamics of host specialization in wood-decay fungi.BMC evolutionary biology · 2018Article
- Fenton reaction facilitates organic nitrogen acquisition by an ectomycorrhizal fungus.The New phytologist · 2018Article
Corrections and comments
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Authors and funding
8 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The majority of nitrogen in forest soils is found in organic matter-protein complexes. Ectomycorrhizal fungi (EMF) are thought to have a key role in decomposing and mobilizing nitrogen from such complexes. However, little is known about the mechanisms governing these processes, how they are regulated by the carbon in the host plant and the availability of more easily available forms of nitrogen sources. Here we used spectroscopic analyses and transcriptome profiling to examine how the presence or absence of glucose and/or ammonium regulates decomposition of litter material and nitrogen mobilization by the ectomycorrhizal fungus Paxillus involutus. We found that the assimilation of nitrogen and the decomposition of the litter material are triggered by the addition of glucose. Glucose addition also resulted in upregulation of the expression of genes encoding enzymes involved in oxidative degradation of polysaccharides and polyphenols, peptidases, nitrogen transporters and enzymes in pathways of the nitrogen and carbon metabolism. In contrast, the addition of ammonium to organic matter had relatively minor effects on the expression of transcripts and the decomposition of litter material, occurring only when glucose was present. On the basis of spectroscopic analyses, three major types of chemical modifications of the litter material were observed, each correlated with the expression of specific sets of genes encoding extracellular enzymes. Our data suggest that the expression of the decomposition and nitrogen assimilation processes of EMF can be tightly regulated by the host carbon supply and that the availability of inorganic nitrogen as such has limited effects on saprotrophic activities.
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