Foliar Nutritional Status Influences Herbivory Caused by Gonipterus platensis in Eucalyptus globulus, E. nitens and Their Hybrids

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dc.catalogadoryvc
dc.contributor.authorRicci Salcedo, Clara
dc.contributor.authorLe Feuvre, Regis
dc.contributor.authorPincheira, Matías
dc.contributor.authorBonomelli De Pinaga, Claudia
dc.contributor.authorRubilar, Rafael
dc.contributor.authorMoraga Suazo, Priscila Ester
dc.date.accessioned2025-10-30T18:49:28Z
dc.date.available2025-10-30T18:49:28Z
dc.date.issued2025
dc.description.abstractEucalyptus plantations worldwide experience significant productivity losses due to herbivory caused by the weevil Gonipterus platensis (Coleoptera: Curculionidae. Marelli 1927); however, the role of leaf nutritional status in host preference remains poorly understood. In this study, we evaluated the incidence and severity of defoliation on two seed-propagated eucalypts—Eucalyptus globulus Labill. and Eucalyptus nitens Maiden, as well as two clonally propagated E. nitens × E. globulus hybrids—at a trial site in Mulchén, Chile. Sampling occurred after peak weevil activity (December 2022) and during austral autumn (May 2023). We determined foliar concentrations of nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), boron (B), carbon (C), and the carbon-to-nitrogen (C/N) ratio, and analyzed their relationships with herbivory using ANOVA, principal component analysis (PCA), and linear regression. Overall defoliation was low (<7%), but significantly higher on E. globulus, with hybrids exhibiting intermediate damage. Seasonally, N and Mg concentrations declined, while K and Ca levels increased, resulting in an elevated C/N ratio in autumn. A positive correlation was observed between leaf Ca concentration and both the incidence and severity of herbivory during peak activity in the susceptible E. globulus genotype (R2 = 0.96, p < 0.05). These findings suggest that calcium accumulation may influence weevil feeding preferences. Further research should explore nutrient-mediated resistance to guide selection and fertilization strategies for developing more resilient eucalyptus varieties.
dc.fechaingreso.objetodigital2025-10-30
dc.fuente.origenORCID
dc.identifier.doi10.3390/f16111618
dc.identifier.urihttps://doi.org/10.3390/f16111618
dc.identifier.urihttps://www.mdpi.com/1999-4907/16/11/1618
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/106440
dc.information.autorucFacultad de Agronomía e Ingeniería Forestal; Ricci Salcedo, Clara; S/I; 1066645
dc.information.autorucFacultad de Agronomía e Ingeniería Forestal; Bonomelli De Pinaga, Claudia; 0000-0003-2735-1137; 51457
dc.information.autorucFacultad de Agronomía e Ingenieria Forestal; Moraga Suazo, Priscila Ester; 0000-0002-3229-7676; 1071328
dc.issue.numero11
dc.language.isoen
dc.nota.accesocontenido completo
dc.revistaForests
dc.rightsacceso abierto
dc.rights.licenseCC BY Atribución Internacional 4.0
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.es
dc.subjectEucalyptus weevil
dc.subjectForest pest
dc.subjectNutrient-mediated resistance
dc.subject.ddc600
dc.subject.deweyTecnologíaes_ES
dc.subject.ods03 Good health and well-being
dc.subject.odspa03 Salud y bienestar
dc.titleFoliar Nutritional Status Influences Herbivory Caused by Gonipterus platensis in Eucalyptus globulus, E. nitens and Their Hybrids
dc.typeartículo
dc.volumen16
sipa.codpersvinculados1066645
sipa.codpersvinculados51457
sipa.codpersvinculados1071328
sipa.trazabilidadORCID;2025-10-27
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