Effect of Trichoderma viride pre‐inoculation in pine species with different levels of susceptibility to Fusarium circinatum: physiological and hormonal responses
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Scholar |
Otros documentos de la autoría: Amaral, Joana; Pinto, G.; Flores-Pacheco, Juan Asdrúbal; Díez-Casero, J. J.; Cerqueira, Andreia; Monteiro, Pedro; Gomez-Cadenas, Aurelio; Alves, Artur; Martín-García, J.
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Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/2508
comunitat-uji-handle3:10234/6999
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https://doi.org/10.1111/ppa.13080 |
Metadatos
Título
Effect of Trichoderma viride pre‐inoculation in pine species with different levels of susceptibility to Fusarium circinatum: physiological and hormonal responsesAutoría
Fecha de publicación
2019ISSN
0032-0862; 1365-3059Cita bibliográfica
AMARAL, J., et al. Effect of Trichoderma viride pre‐inoculation in pine species with different levels of susceptibility to Fusarium circinatum: physiological and hormonal responses. Plant Pathology, 2019, vol. 68, no 9, p. 1645-1653.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://bsppjournals.onlinelibrary.wiley.com/doi/10.1111/ppa.13080Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
Pine pitch canker (PPC), caused by Fusarium circinatum, affects Pinus species worldwide. Although no effective solutions have yet been found to control it, there is a growing interest in using biological control agents ... [+]
Pine pitch canker (PPC), caused by Fusarium circinatum, affects Pinus species worldwide. Although no effective solutions have yet been found to control it, there is a growing interest in using biological control agents (BCA) such as Trichoderma to avoid the application of chemical‐based products. Using species with an increasing level of susceptibility to PPC (Pinus pinea, Pinus pinaster and Pinus radiata), this study aimed to evaluate the effect of Trichoderma viride pre‐inoculation on disease development, assessing several physiological and hormonal parameters. A 2‐week period elapsed between T. viride and F. circinatum inoculation. Sampling for each species was performed independently when at least 50% of the plants of one of the inoculated groups developed disease symptoms. Fusarium circinatum infection reduced water status and photosynthesis, but increased proline, abscisic acid and jasmonic acid concentrations in plants of P. radiata and P. pinaster with symptoms; while in P. pinea water relations were maintained and anthocyanin accumulation occurred in the presence of F. circinatum. In P. radiata, T. viride pre‐inoculation accelerated disease progression, with some PPC‐induced responses augmented (decreased water potential and photosynthesis; increased substomatal CO2 concentration) and novel changes not found in seedlings inoculated exclusively with F. circinatum (increased electrolyte leakage and salicylic acid; decreased relative water content). This suggests that T. viride may be initially recognized as an invading organism, subverting the plant defence mechanisms for successful root colonization. If seedlings are not allowed to recover from this state, pathogen infection may thus be facilitated, highlighting the importance of application timing in BCA strategies. [-]
Publicado en
Plant Pathology (2019) 68Proyecto de investigación
FP1406 ; PTDC/AGR-FOR/2768/2014 ; UID/AMB/50017/2019 ; SFRH/BD/120967/2016 ; SFRH/BPD/122928/2016Derechos de acceso
© 2019 British Society for Plant Pathology
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