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Defining the root endosphere and rhizosphere microbiomes from the World Olive Germplasm Collection

View ORCID ProfileAntonio J. Fernández-González, Pablo J. Villadas, Carmen Gómez-Lama Cabanás, Antonio Valverde-Corredor, Angjelina Belaj, Jesús Mercado-Blanco, Manuel Fernández-López
doi: https://doi.org/10.1101/636530
Antonio J. Fernández-González
aDepartamento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas (CSIC). Calle Profesor Albareda 1, 18008 Granada, Spain
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  • ORCID record for Antonio J. Fernández-González
Pablo J. Villadas
aDepartamento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas (CSIC). Calle Profesor Albareda 1, 18008 Granada, Spain
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Carmen Gómez-Lama Cabanás
bDepartamento de Protección de Cultivos, Instituto de Agricultura Sostenible, CSIC. Campus ‘Alameda del Obispo’ s/n, Avd. Menéndez Pidal s/n, 14004 Córdoba, Spain
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Antonio Valverde-Corredor
bDepartamento de Protección de Cultivos, Instituto de Agricultura Sostenible, CSIC. Campus ‘Alameda del Obispo’ s/n, Avd. Menéndez Pidal s/n, 14004 Córdoba, Spain
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Angjelina Belaj
cÁrea Mejora y Biotecnología, IFAPA-Centro Alameda del Obispo, Avda. Menéndez Pidal s/n, 14080 Córdoba, Spain
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Jesús Mercado-Blanco
bDepartamento de Protección de Cultivos, Instituto de Agricultura Sostenible, CSIC. Campus ‘Alameda del Obispo’ s/n, Avd. Menéndez Pidal s/n, 14004 Córdoba, Spain
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Manuel Fernández-López
aDepartamento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas (CSIC). Calle Profesor Albareda 1, 18008 Granada, Spain
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  • For correspondence: manuel.fernandez@eez.csic.es
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ABSTRACT

Up to date, the bacterial and fungal microbial communities from the olive (Olea europaea L.) root systems have not been simultaneously studied. In this work, we show that microbial communities from the olive root endosphere are less diverse than those from the rhizosphere. But more relevant was to unveil that olive belowground communities are mainly shaped by the genotype of the cultivar when growing under the same environmental, pedological and agronomic conditions. Furthermore, Actinophytocola, Streptomyces and Pseudonocardia are the most abundant bacterial genera in the olive root endosphere, Actinophytocola being the most prevalent genus by far. In contrast, Gp6, Gp4, Rhizobium and Sphingomonas are the main genera in the olive rhizosphere. Canalisporium, Aspergillus, Minimelanolocus and Macrophomina are the main fungal genera present in the olive root system. Interestingly enough, a high proportion of so far unclassified fungal sequences at class level were detected in the rhizosphere. From the belowground microbial profiles here reported, it can be concluded that the genus Actinophytocola may play an important role in olive adaptation to environmental stresses. Moreover, the huge unknown fungal diversity suggests that there are still some fungi with important ecological and biotechnological implications that have yet to be discovered.

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Posted May 13, 2019.
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Defining the root endosphere and rhizosphere microbiomes from the World Olive Germplasm Collection
Antonio J. Fernández-González, Pablo J. Villadas, Carmen Gómez-Lama Cabanás, Antonio Valverde-Corredor, Angjelina Belaj, Jesús Mercado-Blanco, Manuel Fernández-López
bioRxiv 636530; doi: https://doi.org/10.1101/636530
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Defining the root endosphere and rhizosphere microbiomes from the World Olive Germplasm Collection
Antonio J. Fernández-González, Pablo J. Villadas, Carmen Gómez-Lama Cabanás, Antonio Valverde-Corredor, Angjelina Belaj, Jesús Mercado-Blanco, Manuel Fernández-López
bioRxiv 636530; doi: https://doi.org/10.1101/636530

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