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Specificity in Arabidopsis thaliana recruitment of root fungal communities from soil and rhizosphere
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Evolutionary Biology. Purdue Univ, Dept Bot & Plant Pathol, 915 W State St, W Lafayette, IN 47907 USA.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Plant Ecology and Evolution. Univ Adelaide, Sch Biol Sci, North Terrace, SA 5005, Australia;Univ Adelaide, Environm Inst, North Terrace, SA 5005, Australia.ORCID iD: 0000-0001-7810-9696
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Cell and Molecular Biology, Molecular Evolution.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Cell and Molecular Biology, Molecular Evolution.
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2018 (English)In: Fungal Biology, ISSN 1878-6146, E-ISSN 1878-6162, Vol. 122, no 4, p. 231-240Article in journal (Refereed) Published
Abstract [en]

Biotic and abiotic conditions in soil pose major constraints on growth and reproductive success of plants. Fungi are important agents in plant soil interactions but the belowground mycobiota associated with plants remains poorly understood. We grew one genotype each from Sweden and Italy of the widely studied plant model Arabidopsis thaliana. Plants were grown under controlled conditions in organic topsoil local to the Swedish genotype, and harvested after ten weeks. Total DNA was extracted from three belowground compartments: endosphere (sonicated roots), rhizosphere and bulk soil, and fungal communities were characterized from each by amplification and sequencing of the fungal barcode region ITS2. Fungal species diversity was found to decrease from bulk soil to rhizosphere to endo-sphere. A significant effect of plant genotype on fungal community composition was detected only in the endosphere compartment. Despite A. thaliana being a non-mycorrhizal plant, it hosts a number of known mycorrhiza fungi in its endosphere compartment, which is also colonized by endophytic, pathogenic and saprotrophic fungi. Species in the Archaeorhizomycetes were most abundant in rhizosphere samples suggesting an adaptation to environments with high nutrient turnover for some of these species. We conclude that A. thaliana endosphere fungal communities represent a selected subset of fungi recruited from soil and that plant genotype has small but significant quantitative and qualitative effects on these communities.

Place, publisher, year, edition, pages
2018. Vol. 122, no 4, p. 231-240
Keywords [en]
Arabidopsis, Archaeorhizomcyetes, Brassicaceae, Ion Torrent, ITS metabarcoding, Rhizosphere
National Category
Botany
Identifiers
URN: urn:nbn:se:uu:diva-354246DOI: 10.1016/j.funbio.2017.12.013ISI: 000430773300005PubMedID: 29551197OAI: oai:DiVA.org:uu-354246DiVA, id: diva2:1220998
Funder
Swedish Research Council, 349-2007-8731Swedish Research Council, 2012-3950Australian Research Council, DE150100542Australian Research Council, DP150103414
Note

De 2 första författarna delar förstaförfattarskapet.

Available from: 2018-06-19 Created: 2018-06-19 Last updated: 2018-06-19Bibliographically approved

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Urbina, HectorBreed, Martin F.Zhao, WeizhouAndersson, Siv G.E.Ågren, JonBaldauf, Sandra L.Rosling, Anna

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