dc.contributor.author | Verdejo-Lucas, Soledad | |
dc.contributor.author | Viera, A. | |
dc.contributor.author | Stchigel, A. M. | |
dc.contributor.author | Sorribas, F. J. | |
dc.contributor.other | Producció Vegetal | ca |
dc.date.accessioned | 2024-09-17T13:35:18Z | |
dc.date.available | 2024-09-17T13:35:18Z | |
dc.date.issued | 2009-12-01 | |
dc.identifier.citation | Lucas, S. Verdejo, A. Viera, A.M. Stchigel, and F.J. Sorribas. 2009. “Screening Culture Filtrates of Fungi for Activity Against Tylenchulus Semipenetrans.” Spanish Journal of Agricultural Research 7 (4): 896-904. doi: 10.5424/sjar/2009074-1103 | ca |
dc.identifier.issn | 1695-971X | ca |
dc.identifier.uri | http://hdl.handle.net/20.500.12327/3266 | |
dc.description.abstract | Culture filtrates of 20 fungi isolated from citrus soils were screened for their activity against Tylenchulus
semipenetrans in both in vitro and greenhouse tests. The filtrates of Talaromyces cyanescens (isolates 2-4 and 2-5),
Paecilomyces lilacinus, Chaetomium robustum, Acremonium strictum, Engyodontium album, Myrothecium verrucaria,
Emericella rugulosa, and Tarracomyces gigaspora consistently inhibited the motility of second-stage juveniles at
various concentrations of the filtrate. Dose-response models were used to determine the filtrate concentration required
to inhibit the motility of 50% of the juveniles (CI50). The culture filtrate of P. lilacinus showed the highest activity
with a CI50 value of 58% that differed from that of C. robustum (CI50 = 68%), and A. strictum CI50 = 82%. The culture
filtrates of P. lilacinus, E. album, and T. cyanescens 2-5 maintained their activity when autoclaved at 120ºC for 20
min. The autoclaved filtrate of T. cyanescens 2-4 was more effective at inhibiting juvenile motility (CI50 = 28%) than
that of T. cyanescens 2-5 (CI50 = 80%), C. robustum (CI50 = 72 %) and P. lilacinus (CI50 = 72%). The culture filtrate
of T. cyanescens 2-4 also inhibited egg hatching. Nematode reproduction on Cleopatra mandarin and Carrizo citrange
were respectively reduced by the culture filtrate of P. lilacinus and the autoclaved filtrate of T. cyanescens 2-4. These
results support the hypothesis that soil fungi may contribute to regulate nematode densities by the production of
secondary metabolites with nematicidal activity. | ca |
dc.description.sponsorship | This research was funded by Spanish Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA) grant no. RTA2005-00086-00-00. The second author was the recipient of a pre-doctoral grant provided by INIA. The assistance of Joaquin Pastor of the IRTA, Estació Experimental de l’Ebre, in locating citrus orchards for fungal isolation is greatly appreciated. | ca |
dc.format.extent | 9 | ca |
dc.language.iso | eng | ca |
dc.publisher | Consejo Superior de Investigaciones Científicas | ca |
dc.relation.ispartof | Spanish Journal of Agricultural Research | ca |
dc.rights | Attribution 4.0 International | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | * |
dc.title | Screening culture filtrates of fungi for activity against Tylenchulus semipenetrans | ca |
dc.type | info:eu-repo/semantics/article | ca |
dc.description.version | info:eu-repo/semantics/publishedVersion | ca |
dc.rights.accessLevel | info:eu-repo/semantics/openAccess | |
dc.embargo.terms | cap | ca |
dc.relation.projectID | INIA/Programa Nacional de Recursos y Tecnologías Agroalimentarias/RTA2005-00086-00-00/ES/Control de Tylenchulus semipenetrans mediante métodos biológicos, genéticos y culturales compatilbes con la producción integrada de cítricos/ | ca |
dc.subject.udc | 632 | ca |
dc.identifier.doi | https://doi.org/10.5424/sjar/2009074-1103 | ca |
dc.contributor.group | Protecció Vegetal Sostenible | ca |