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TitleDifferences in the endophytic microbiome of olive cultivars infected by xylella fastidiosa across seasons
Author(s)Giampetruzzi, Annalisa
Baptista, Paula
Morelli, Massimiliano
Cameirão, Cristina
Lino-Neto, T.
Costa, Daniela
D’Attoma, Giusy
Abou Kubaa, Raied
Altamura, Giuseppe
Saponari, Maria
Pereira, José Alberto
Saldarelli, Pasquale
KeywordsXylella fastidiosa
16S/ITS sequencing
shotgun metagenomic sequencing
Issue date2020
PublisherMultidisciplinary Digital Publishing Institute
CitationGiampetruzzi, A.; Baptista, P.; Morelli, M.; Cameirão, C.; Lino Neto, T.; Costa, D.; D’Attoma, G.; Abou Kubaa, R.; Altamura, G.; Saponari, M.; Pereira, J.A.; Saldarelli, P. Differences in the Endophytic Microbiome of Olive Cultivars Infected by Xylella fastidiosa across Seasons. Pathogens 2020, 9, 723. DOI: 10.3390/pathogens9090723
Abstract(s)The dynamics of <i>Xylella fastidiosa</i> infections in the context of the endophytic microbiome was studied in field-grown plants of the susceptible and resistant olive cultivars Kalamata and FS17. Whole metagenome shotgun sequencing (WMSS) coupled with 16S/ITS rRNA gene sequencing was carried out on the same trees at two different stages of the infections: In Spring 2017 when plants were almost symptomless and in Autumn 2018 when the trees of the susceptible cultivar clearly showed desiccations. The progression of the infections detected in both cultivars clearly unraveled that <i>Xylella</i> tends to occupy the whole ecological niche and suppresses the diversity of the endophytic microbiome. However, this trend was mitigated in the resistant cultivar FS17, harboring lower population sizes and therefore lower <i>Xylella</i> average abundance ratio over total bacteria, and a higher α-diversity. Host cultivar had a negligible effect on the community composition and no clear associations of a single taxon or microbial consortia with the resistance cultivar were found with both sequencing approaches, suggesting that the mechanisms of resistance likely reside on factors that are independent of the microbiome structure. Overall, <i>Proteobacteria</i>, <i>Actinobacteria</i>, <i>Firmicutes</i>, and <i>Bacteriodetes</i> dominated the bacterial microbiome while <i>Ascomycota</i> and <i>Basidiomycota</i> those of Fungi.
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AccessOpen access
Appears in Collections:CBFP - Artigos/Papers

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