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Network hubs in root-associated fungal metacommunities.
- Source :
-
Microbiome [Microbiome] 2018 Jun 23; Vol. 6 (1), pp. 116. Date of Electronic Publication: 2018 Jun 23. - Publication Year :
- 2018
-
Abstract
- Background: Although a number of recent studies have uncovered remarkable diversity of microbes associated with plants, understanding and managing dynamics of plant microbiomes remain major scientific challenges. In this respect, network analytical methods have provided a basis for exploring "hub" microbial species, which potentially organize community-scale processes of plant-microbe interactions.<br />Methods: By compiling Illumina sequencing data of root-associated fungi in eight forest ecosystems across the Japanese Archipelago, we explored hubs within "metacommunity-scale" networks of plant-fungus associations. In total, the metadata included 8080 fungal operational taxonomic units (OTUs) detected from 227 local populations of 150 plant species/taxa.<br />Results: Few fungal OTUs were common across all the eight forests. However, in each of the metacommunity-scale networks representing northern four localities or southern four localities, diverse mycorrhizal, endophytic, and pathogenic fungi were classified as "metacommunity hubs," which were detected from diverse host plant taxa throughout a climatic region. Specifically, Mortierella (Mortierellales), Cladophialophora (Chaetothyriales), Ilyonectria (Hypocreales), Pezicula (Helotiales), and Cadophora (incertae sedis) had broad geographic and host ranges across the northern (cool-temperate) region, while Saitozyma/Cryptococcus (Tremellales/Trichosporonales) and Mortierella as well as some arbuscular mycorrhizal fungi were placed at the central positions of the metacommunity-scale network representing warm-temperate and subtropical forests in southern Japan.<br />Conclusions: The network theoretical framework presented in this study will help us explore prospective fungi and bacteria, which have high potentials for agricultural application to diverse plant species within each climatic region. As some of those fungal taxa with broad geographic and host ranges have been known to promote the survival and growth of host plants, further studies elucidating their functional roles are awaited.
- Subjects :
- Base Sequence
Biodiversity
DNA, Fungal genetics
Endophytes genetics
Endophytes isolation & purification
Forests
Fungi genetics
Fungi isolation & purification
Host Specificity
Japan
Microbiota genetics
Mycorrhizae physiology
Sequence Analysis, DNA
Soil Microbiology
Endophytes classification
Fungi classification
Plant Roots microbiology
Plants microbiology
Subjects
Details
- Language :
- English
- ISSN :
- 2049-2618
- Volume :
- 6
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Microbiome
- Publication Type :
- Academic Journal
- Accession number :
- 29935536
- Full Text :
- https://doi.org/10.1186/s40168-018-0497-1