Trade-offs among leaf toughness, constitutive chemical defense, and growth rates in oaks are influenced by the level of leaf mass per area

Sancho-Knapik, Domingo (Universidad de Zaragoza) ; Martín-Sánchez, Rubén ; Alonso-Forn, David ; Peguero-Pina, José Javier (Universidad de Zaragoza) ; Ferrio, Juan Pedro (Universidad de Zaragoza) ; Gil-Pelegrín, Eustaquio (Universidad de Zaragoza)

Resumen: Key message
Among the variety of leaf defensive strategies to counteract herbivory attacks, the oak species analyzed in this study maximize investment in no more than one, with high-LMA oaks developing very tough leaves and low-LMA oaks favoring between high concentrations of condensed tannins or high growth rates.
Context
Plants develop a variety of defense strategies to counteract herbivory attacks, from physical and chemical defenses to tolerance strategies. Tradeoffs between strategies have been widely assessed from a resource allocation perspective, but there is a need to consider eventual interactions among them.
Aim
We evaluate the among-species tradeoff between three main constitutive plant defense traits, while considering the leaf mass per area ratio (LMA) as a proxy of leaf construction investment on area basis.
Methods
Leaf toughness measured as work of fracture, condensed tannins, and relative growth rate (RGR) were analyzed in a set of 19 Quercus L. species with contrasting LMA.
Results
Most species had low values either in two or in the three traits analyzed. Moreover, the highest values of work of fracture appeared in the species with high LMA; the highest values of condensed tannins were found in the species with the lowest LMA; and high values of RGR were measured in species with intermediate or lower values of LMA.
Conclusion
Oaks showed a trade-off among leaf defensive strategies influenced by LMA. Oaks with high LMA developed very tough leaves while oaks with low LMA presented lower values of toughness but favored between one of the two other strategies.

Idioma: Inglés

DOI: 10.1186/s13595-023-01204-9

Año: 2023

Publicado en: Annals of Forest Science 80, 39 (2023), 1-10
ISSN: 1297-966X

Factor impacto SCIMAGO: 0.784 - Forestry (Q1) - Ecology (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/S74-23R
Financiación: info:eu-repo/grantAgreement/ES/MICINN/AEI/CNS2022-136156
Financiación: info:eu-repo/grantAgreement/ES/MICINN BES-2017-081208
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2019-106701RR-I00

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Ecología (Dpto. CC.Agrar.y Medio Natural)
Área (Departamento): Area Ingeniería Agroforestal (Dpto. CC.Agrar.y Medio Natural)
Área (Departamento): Área Producción Vegetal (Dpto. CC.Agrar.y Medio Natural)
Área (Departamento): Área Botánica (Dpto. CC.Agrar.y Medio Natural)