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Título: | Metabarcoding reveals that rhizospheric microbiota of Quercus pyrenaica is composed by a relatively small number of bacterial taxa highly abundant |
Autor: | Lasa, Ana V. CSIC ORCID; Fernández-González, Antonio José CSIC ORCID; Villadas, Pablo J. CSIC ORCID; Toro, Nicolás CSIC ORCID; Fernández-López, Manuel CSIC ORCID | Fecha de publicación: | 2019 | Editor: | Nature Publishing Group | Citación: | Scientific Reports 9 (2019) | Resumen: | Melojo oak (Quercus pyrenaica Willd.) is a key tree species of Mediterranean forests; however, these forests show an advanced stage of deterioration in the Iberian Peninsula. Plant-associated microorganisms play an essential role improving their host’s fitness, hence, a better understanding of oak rhizospheric microbiome, especially of those active members, could be the first step towards microbiome-based approaches for oak-forest improvement. Here we reported, for the first time, the diversity of total (DNA-based) and potentially active (RNA-based) bacterial communities of different melojo-oak forest formations through pyrosequencing of 16S rRNA gene amplicons. We found that potentially active bacterial communities were as rich and diverse as total bacterial communities, but different in terms of relative abundance patterns in some of the studied areas. Both core microbiomes were dominated by a relatively small percentage of OTUs, most of which showed positive correlation between both libraries. However, the uncoupling between abundance (rDNA) and potential activity (rRNA) for some taxa suggests that the most abundant taxa are not always the most active, and that low-abundance OTUs may have a strong influence on oak’s rhizospheric ecology. Thus, measurement of rRNA:rDNA ratio could be helpful in identifying major players for the development of bacterial bioinoculants. | Versión del editor: | https://www.nature.com/articles/s41598-018-38123-z | URI: | http://hdl.handle.net/10261/186427 | DOI: | 10.1038/s41598-018-38123-z | Identificadores: | doi: 10.1038/s41598-018-38123-z issn: 2045-2322 |
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