Terpene arms race in the Seiridium cardinale - Cupressus sempervirens pathosystem
Achotegui-Castells, Ander (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Della Rocca, Gianni (Istituto per la Protezione Sostenibile delle Piante)
Llusià Benet, Joan (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Danti, Roberto (Istituto per la Protezione Sostenibile delle Piante)
Barberini, Sara (Istituto per la Protezione Sostenibile delle Piante)
Bouneb, Mabrouk (Consiglio per la Ricerca e la Sperimentazione in Agricoltura. Centro di Ricerca per l'Agrobiologia e la Pedologia)
Simoni, Sauro (Consiglio per la Ricerca e la Sperimentazione in Agricoltura. Centro di Ricerca per l'Agrobiologia e la Pedologia)
Michelozzi, Marco (Consiglio Nazionale delle Ricerche. Istituto di Bioscienze e Biorisorse)
Peñuelas, Josep (Universitat Autònoma de Barcelona. Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia)

Data:	2016
Resum:	The canker-causing fungus Seiridium cardinale is the major threat to Cupressus sempervirens worldwide. We investigated the production of terpenes by canker-resistant and susceptible cypresses inoculated with S. cardinale, the effect of these terpenes on fungal growth, and the defensive biotransformation of the terpenes conducted by the fungus. All infected trees produced de novo terpenes and strongly induced terpenic responses, but the responses were stronger in the cankerresistant than the susceptible trees. In vitro tests for the inhibition of fungal growth indicated that the terpene concentrations of resistant trees were more inhibitory than those of susceptible trees. The highly induced and de novo terpenes exhibited substantial inhibition (more than a fungicide reference) and had a high concentration-dependent inhibition, whereas the most abundant terpenes had a low concentration-dependent inhibition. S. cardinale biotransformed three terpenes and was capable of detoxifying them even outside the fungal mycelium, in its immediate surrounding environment. Our results thus indicated that terpenes were key defences efficiently used by C. sempervirens, but also that S. cardinale is ready for the battle.
Ajuts:	European Commission FP0903 European Commission 610028 Ministerio de Economía y Competitividad CGL2013-48074-P Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-274
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Agroecology ; Chemical ecology
Publicat a:	Scientific reports, Vol 6 (Jan. 2016) , article 18954, ISSN 2045-2322

DOI: 10.1038/srep18954
PMID: 26796122

13 p, 4.2 MB

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