Bactericidal and plant defense elicitation activities of Eucalyptus oil decrease the severity of infections by Xylella fastidiosa on almond plants
dc.contributor.author
dc.date.accessioned
2023-06-07T09:25:54Z
dc.date.available
2023-06-07T09:25:54Z
dc.date.issued
2023-03-15
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dc.description.abstract
The activity of Eucalyptus essential oil against eleven strains pertaining to six species of plant pathogenic bacteria was studied using growth inhibition and contact assays. All strains were susceptible to the formulation EGL2, and Xylella fastidiosa subspecies and Xanthomonas fragariae were the most sensitive. The bactericidal effect was strong causing 4.5 to 6.0 log reductions in survival in 30 min at concentrations in the range of 0.75 to 15.0 μl/ml depending on the bacteria tested. Transmission electron microscopy of the formulation EGL2 against the three X. fastidiosa subspecies studied allowed the observation of a strong lytic effect on bacterial cells. In addition, the preventive spray application of EGL2 to potted pear plants subsequently inoculated with Erwinia amylovora significantly decreased the severity of infections. Almond plants treated by endotherapy or soil drenching, and then inoculated with X. fastidiosa showed a significant decrease in disease severity as well as in the levels of the pathogen, depending on the strategy used (endotherapy/soil drenching, preventive/curative). The treatment by endotherapy in almond plants induced the expression of several genes involved in plant defense. It was concluded that the reduction of infections by the Eucalyptus oil treatments was due to the combination of its bactericidal and plant defense induction activities
dc.description.sponsorship
This work was supported by grants from the European Union (BeXyL Ref. 101060593), and from Ministerio de Ciencia, Innovación y Universidades of Spain (XF-Peps Ref. TED2021-130110B-C43). AB was recipient of a research grant from the Secretaria d’Universitats i Recerca, Departament d’Economia i Coneixement, Generalitat de Catalunya (Ref.2018 FI B00334)
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application/pdf
dc.language.iso
eng
dc.publisher
Frontiers Media
dc.relation
TED2021-130110B-C43
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Reproducció digital del document publicat a: https://doi.org/10.3389/fpls.2023.1122218
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Frontiers in Plant Science, 2023, vol. 14, art.núm.1122218
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Articles publicats (D-EQATA)
dc.rights
Attribution 4.0 International (CC BY 4.0)
dc.rights.uri
dc.source
Montesinos Barreda, Laura Baró Sabé, Aina Gascón, Beatriz Montesinos Seguí, Emilio 2023 Bactericidal and plant defense elicitation activities of Eucalyptus oil decrease the severity of infections by Xylella fastidiosa on almond plants Frontiers In Plant Science 14 art.núm.1122218
dc.subject
dc.title
Bactericidal and plant defense elicitation activities of Eucalyptus oil decrease the severity of infections by Xylella fastidiosa on almond plants
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/openAccess
dc.type.version
info:eu-repo/semantics/publishedVersion
dc.identifier.doi
dc.identifier.idgrec
036969
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dc.relation.ProjectAcronym
dc.identifier.eissn
1664-462X