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Under the Christmas Tree: Belowground Bacterial Associations With Abies nordmanniana Across Production Systems and Plant Development

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    SYSNO ASEP0524376
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleUnder the Christmas Tree: Belowground Bacterial Associations With Abies nordmanniana Across Production Systems and Plant Development
    Author(s) Garcia-Lemos, A. M. (DK)
    Gobbi, A. (DE)
    Nicolaisen, M. H. (DK)
    Hansen, L. H. (DK)
    Roitsch, Thomas (UEK-B) RID, ORCID, SAI
    Veierskov, B. (DK)
    Nybroe, O. (DK)
    Number of authors7
    Article number198
    Source TitleFrontiers in Microbiology. - : Frontiers Research Foundation - ISSN 1664-302X
    Roč. 11, MAR 2020 (2020)
    Number of pages17 s.
    Languageeng - English
    CountryCH - Switzerland
    Keywordsmicrobial community ; denitrifier abundance ; fungal communities ; wilt disease ; peat soils ; rhizosphere ; diversity ; ecology ; emissions ; cultivars ; a ; nordmanniana ; Christmas trees ; rhizosphere ; beneficial bacteria ; microbiome ; nitrogen cycling ; nitrogen-fixing bacteria ; denitrifying bacteria
    Subject RIVEE - Microbiology, Virology
    OECD categoryMicrobiology
    R&D ProjectsLO1415 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
    Method of publishingOpen access
    Institutional supportUEK-B - RVO:86652079
    UT WOS000524527700001
    EID SCOPUS85082723540
    DOI10.3389/fmicb.2020.00198
    AnnotationAbies nordmanniana is an economically important tree crop widely used for Christmas tree production. After initial growth in nurseries, seedlings are transplanted to the field. Rhizosphere bacterial communities generally impact the growth and health of the host plant. However, the dynamics of these communities during A. nordmanniana growth in nurseries, and during transplanting, has not previously been addressed. By a 16S rRNA gene amplicon sequencing approach, we characterized the composition and dynamics of bacterial communities in the rhizosphere during early plant growth in field and greenhouse nurseries and for plants transplanted from the greenhouse to the field. Moreover, the N-cycling potential of rhizosphere bacteria across plant age was addressed in both nurseries. Overall, a rhizosphere core microbiome of A. nordmanniana, comprising 19.9% of the taxa at genus level, was maintained across plant age, nursery production systems, and even during the transplantation of plants from the greenhouse to the field. The core microbiome included the bacterial genera Bradyrhizobium, Burkholderia, Flavobacterium, Pseudomonas, Rhizobium, Rhodanobacter, and Sphingomonas, which harbor several N-fixing and plant growth-promoting taxa. Nevertheless, both plant age and production system caused significant changes in the rhizosphere bacterial communities. Concerning community composition, the relative abundance of Rhizobiales (genera Rhizobium, Bradyrhizobium, and Devosia) was higher in the rhizosphere of field-grown A. nordmanniana, whereas the relative abundance of Enterobacteriales and Pseudomonadales (genus Pseudomonas) was higher in the greenhouse. Analysis of community dynamics across plant age showed that in the field nursery, the most abundant bacterial orders showed more dynamic changes in their relative abundance in the rhizosphere than in the bulk soil. In the greenhouse, age-dependent dynamics even occurred but affected different taxa than for the field-grown plants. The N-cycling potential of rhizosphere bacterial communities showed an increase of the relative abundance of genes involved in nitrogen fixation and denitrification by plant age. Similarly, the relative abundance of reported nitrogen-fixing or denitrifying bacteria increased by plant age. However, different community structures seemed to lead to an increased potential for nitrogen fixation and denitrification in the field versus greenhouse nurseries.
    WorkplaceGlobal Change Research Institute
    ContactNikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268
    Year of Publishing2021
    Electronic addresshttps://www.frontiersin.org/articles/10.3389/fmicb.2020.00198/full
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