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Comparative study of neighboring Holm oak and olive trees-belowground microbial communities subjected to different soil management

AuthorsFernández-González, Antonio José; Wentzien, N.M.; Villadas, Pablo J.; Valverde-Corredor, Antonio ; Lasa, Ana V.; Gómez-Lama Cabanás, Carmen ; Mercado-Blanco, Jesús ; Fernández-López, Manuel
Issue Date2020
PublisherPublic Library of Science
CitationPLoS ONE 15(8): e0236796 (2020)
AbstractIt is well-known that different plant species, and even plant varieties, promote different assemblages of the microbial communities associated with them. Here, we investigate how microbial communities (bacteria and fungi) undergo changes within the influence of woody plants (two olive cultivars, one tolerant and another susceptible to the soilborne fungal pathogen Verticillium dahliae, plus wild Holm oak) grown in the same soil but with different management (agricultural versus native). By the use of metabarcoding sequencing we determined that the native Holm oak trees rhizosphere bacterial communities were different from its bulk soil, with differences in some genera like Gp4, Gp6 and Solirubrobacter. Moreover, the agricultural management used in the olive orchard led to belowground microbiota differences with respect to the natural conditions both in bulk soils and rhizospheres. Indeed, Gemmatimonas and Fusarium were more abundant in olive orchard soils. However, agricultural management removed the differences in the microbial communities between the two olive cultivars, and these differences were minor respect to the olive bulk soil. According to our results, and at least under the agronomical conditions here examined, the composition and structure of the rhizospheric microbial communities do not seem to play a major role in olive tolerance to V. dahliae.
Publisher version (URL)http://dx.doi.org/10.1371/journal.pone.0236796
Identifiersdoi: 10.1371/journal.pone.0236796
issn: 1932-6203
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