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Title: Network hubs in root-associated fungal metacommunities
Authors: Toju, Hirokazu  kyouindb  KAKEN_id
Tanabe, Akifumi S.
Sato, Hirotoshi
Author's alias: 東樹, 宏和
田辺, 晶史
佐藤, 博俊
Keywords: Agriculture
Biodiversity
Ecosystem restoration
Host specificity or preference
Latitudinal gradients
Metacommunities
Microbial inoculation
Network hubs
Plant–fungus interactions
Mycorrhizal and endophytic symbiosis
Issue Date: 23-Jun-2018
Publisher: Springer Nature
Journal title: Microbiome
Volume: 6
Thesis number: 116
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. 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. 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. 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.
Description: 日本列島の多様な菌から農業利用可能なものを選別 --植物150種と真菌8, 080系統からなる巨大ネットワーク・データ--. 京都大学プレスリリース. 2018-07-02.
Rights: © The Author(s). 2018. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
URI: http://hdl.handle.net/2433/232575
DOI(Published Version): 10.1186/s40168-018-0497-1
PubMed ID: 29935536
Related Link: http://www.kyoto-u.ac.jp/ja/research/research_results/2018/180623_1.html
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