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dc.contributor.author
Olate, Verónica Rachel
dc.contributor.author
Vélez, María Laura
dc.contributor.author
Greslebin, Alina Gabriela
dc.contributor.author
Schmeda Hirschmann, Guillermo
dc.date.available
2020-04-02T15:54:01Z
dc.date.issued
2015-08
dc.identifier.citation
Olate, Verónica Rachel; Vélez, María Laura; Greslebin, Alina Gabriela; Schmeda Hirschmann, Guillermo; Phytophthora austrocedri Elicitates Changes in Diterpene Profile of Austrocedrus chilensis; Molecular Diversity Preservation International; Molecules; 20; 8-2015; 15084-15097
dc.identifier.issn
1420-3049
dc.identifier.uri
http://hdl.handle.net/11336/101648
dc.description.abstract
The populations of the Andean Cupressaceae Austrocedrus chilensis have been severely affected by a disease caused by the phytopathogenic fungus Phytophthora austrocedri. A study was undertaken to disclose changes in the resin composition of P. austrocedri-infected individuals, including naturally infected and artificially inoculated trees, compared with healthy A. chilensis trees. GC-MS and 1 H-NMR studies showed a clear differentiation among healthy and infected resins, with the diterpene isopimara-8(9),15-dien-19-ol as a relevant constituent in resins from infected trees. The effect of resin fractions from P. austrocedri infected trees on the pathogen was assessed by measuring the mycelial growth in agar plates. The most active fractions from resin obtained from infected trees inhibited fungal growth by nearly 50% at 1 mg/dish (35.37 µg/cm2 ). The main constituent in the active fractions were 18-hydroxymanool and the aldehyde torulosal. Both compounds are oxidation products of manool and can be a chemical response of the tree to the pathogen or be formed from the pathogen as a biotransformation product of manool by microbial oxidation. While the diterpene profiles from A. chilensis tree resins can easily differentiate healthy and P. austrocedri infected individuals, the possible conversion of manool to the antifungal derivatives 4 and 6 by the microorganism remains to be established.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Molecular Diversity Preservation International
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/
dc.subject
Phytophthora austrocedri
dc.subject
Ausrocedrus chilensis
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resin diterpenes
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Cupressaceae
dc.subject.classification
Química Orgánica
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Ciencias Químicas
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CIENCIAS NATURALES Y EXACTAS
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Ciencias de las Plantas, Botánica
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Phytophthora austrocedri Elicitates Changes in Diterpene Profile of Austrocedrus chilensis
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-12-27T14:03:59Z
dc.journal.volume
20
dc.journal.pagination
15084-15097
dc.journal.pais
Suiza
dc.journal.ciudad
Basel
dc.description.fil
Fil: Olate, Verónica Rachel. Universidad de Talca; Chile
dc.description.fil
Fil: Vélez, María Laura. Centro de Investigación y Extensión Forestal Andino Patagónico; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
dc.description.fil
Fil: Greslebin, Alina Gabriela. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Esquel. Departamento de Biología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
dc.description.fil
Fil: Schmeda Hirschmann, Guillermo. Universidad de Talca; Chile
dc.journal.title
Molecules
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.3390/molecules200815084
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/1420-3049/20/8/15084
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6332227/
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