Temporal physiological response of pine to Fusarium circinatum infection is dependent on host susceptibility level: the role of ABA catabolism
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10.1093/treephys/tpaa143 |
Metadatos
Título
Temporal physiological response of pine to Fusarium circinatum infection is dependent on host susceptibility level: the role of ABA catabolismAutoría
Fecha de publicación
2020-11-05Editor
Oxford University PressISSN
0829-318X; 1758-4469Cita bibliográfica
Joana Amaral, Barbara Correia, Mónica Escandón, Cláudia Jesus, João Serôdio, Luis Valledor, Robert D Hancock, Lia-Tânia Dinis, Aurelio Gomez-Cadenas, Artur Alves, Glória Pinto, Temporal physiological response of pine to Fusarium circinatum infection is dependent on host susceptibility level: the role of ABA catabolism, Tree Physiology, Volume 41, Issue 5, May 2021, Pages 801–816, https://doi.org/10.1093/treephys/tpaa143Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://academic.oup.com/treephys/article/41/5/801/5943849Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
Pine pitch canker (PPC), caused by Fusarium circinatum Nirenberg and O’Donnell, represents an important threat to conifer forests worldwide, being associated with significant economic losses. Although essential to ... [+]
Pine pitch canker (PPC), caused by Fusarium circinatum Nirenberg and O’Donnell, represents an important threat to conifer forests worldwide, being associated with significant economic losses. Although essential to develop disease mitigation strategies, little research focused on host susceptibility/resistance mechanisms has been conducted. We aimed to explore the response of a highly susceptible (Pinus radiata D. Don) and a relatively resistant (Pinus pinea L.) species to F. circinatum infection at different stages of infection. Morpho-physiological, hormonal and oxidative stress-related changes were assessed for each pine species and sampling point. Most of the changes found occurred in symptomatic P. radiata, for which an increased susceptibility to photoinhibition was detected together with decreased superoxide dismutase activity. Abscisic acid catabolism was activated by F. circinatum inoculation in both pine species, leading to the accumulation of the inactive dihydrophaseic acid in P. radiata and of the less-active phaseic acid in P. pinea. Hormone confocal analysis revealed that this strategy may be of particular importance at 6 d.p.i. in P. pinea, which together with photosynthesis maintenance to fuel defense mechanism, could in part explain the species resistance to PPC. These results are of great interest for the development of hormone-based breeding strategies or for the use of hormone application as inducers of resistance to F. circinatum infection. [-]
Publicado en
Tree Physiology, Vol. 41, núm. 5, (2021), pàgs. 801–816Entidad financiadora
National Funds through the Portuguese Foundation for Science and Technology (FCT) | Ministerio de Economía y Competitividad | FCT/MCTES | European Cooperation in Science and Technology | Rural and Environment Science and Analytical Services Division of the Scottish Government | The James Hutton Institute
Código del proyecto o subvención
POCI-01-015-FEDER-016785 | PTDC/AGR-FOR/2768/2014 | RYC-2015-17871 | SFRH/BD/120967/2016 | UID/50017/2020+UIDB/50017/2020 | FJCI-2017-31613 | COST Action FP1406 PINESTRENGTH
Título del proyecto o subvención
FEDER, COMPETE (Programa Operacional Fatores de Competitividade) | URGENTpine | Programa Ramón y Cajal | PPC—strategies for management of Gibberella circinata in greenhouses and forests
Derechos de acceso
info:eu-repo/semantics/restrictedAccess
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