Summer Drought Delays Leaf Senescence and Shifts Radial Growth Towards the Autumn in Corylus Taxa

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dc.contributor.authorMijnsbrugge, Kristine Vander
dc.contributor.authorPareijn, Art
dc.contributor.authorMoreels, Stefaan
dc.contributor.authorMoreels, Sharon
dc.contributor.authorBuisset, Damien
dc.contributor.authorVancampenhout, Karen
dc.contributor.authorNotivol PaĆ­no, Eduardo
dc.contributor.orcidNotivol PaĆ­no, Eduardo [0000-0003-4272-4536]
dc.date.accessioned2025-06-02T10:35:45Z
dc.date.available2025-06-02T10:35:45Z
dc.date.issued2025-05-28
dc.description.abstractBackground: Understanding the mechanisms by which woody perennials adapt to extreme water deficits is important in regions experiencing increasingly frequent and intense droughts. Methods: We investigated the effects of drought severity in the shrubs Corylus avellana L., C. maxima Mill., and their morphological intermediate forms, all from local Belgian origin, and C. avellana from a Spanish-Pyrenean origin. Potted saplings in a common garden were not receiving any water for a duration of 30 days in July 2021 and developed a range of visual stress symptoms. We assessed responses across the various symptom categories. Results: Droughted plants senesced later than the controls (up to 6 days). The most severely affected plants disproportionately displayed the longest delay (21 days). The delayed leaf senescence was reflected in the subsequent bud burst which was delayed for the droughted plants, with again the largest delay observed for the most severely affected plants. Interestingly, radial growth shifted towards the autumn among the drought-treated plants, suggesting compensation growth after growing conditions normalized. The Spanish-Pyrenean provenance, characterized by smaller plants with smaller leaves, developed visual drought symptoms later than the local provenance during the drought. Conclusions: The results indicate that severe early summer drought, followed by rewatering, not only diminishes radial growth but also prolongs the growth period, and delays leaf senescence. A prolonged time frame for radial growth and a delayed leaf senescence indicate a longer period in which carbon is incorporated in woody tissue or in non-structural carbohydrates. This can help the fine tuning of carbon sequestration modeling. The Pyrenean provenance, adapted to high altitude, holds an advantage under water-limited conditions.
dc.description.peerreviewedSi
dc.identifier.citationVander Mijnsbrugge, K., Pareijn, A., Moreels, S., Moreels, S., Buisset, D., Vancampenhout, K., & Notivol Paino, E. (2025). Summer Drought Delays Leaf Senescence and Shifts Radial Growth Towards the Autumn in Corylus Taxa. Forests, 16(6), Article 6. https://doi.org/10.3390/f16060907
dc.identifier.doi10.3390/f16060907
dc.identifier.issn1999-4907
dc.identifier.urihttps://hdl.handle.net/10532/7638
dc.language.isoen
dc.publisherMDPI AG
dc.relation.citaSi
dc.relation.ispartofForests
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spainen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectautumnal leaf senescence
dc.subjectradial growth
dc.subjectdrought
dc.subjecthazel
dc.subjectvisual stress symptoms
dc.subjectbud burst
dc.subjectpopulation differentiation
dc.subjectmorphological leaf traits
dc.subject.agrovocIncremento de diƔmetro
dc.subject.agrovocSequĆ­a
dc.subject.agrovocCorylus avellana
dc.subject.agrovocBrotaciĆ³n
dc.subject.agrovocIdentificaciĆ³n
dc.subject.agrovocHoja
dc.subject.sdgAcciĆ³n por el clima
dc.subject.sdgVida de ecosistemas terrestres
dc.titleSummer Drought Delays Leaf Senescence and Shifts Radial Growth Towards the Autumn in Corylus Taxa
dc.typetexto
dc.typerevista
dc.typeartĆ­culo
dc.typeartĆ­culo original
dc.type.hasVersionversiĆ³n publicada
oaire.citation.issue6
oaire.citation.volume16

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