Influence of Summer Drought on Resprouting and Leaf Senescence in a Common Garden of Prunus spinosa L.
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Date
2025
Authors
Vander Mijnsbrugge, KristineMoreels, Stefaan
Moreels, Sharon
Buisset, Damien
Van Campenhout, Karen
Notivol PaĆno, Eduardo
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Abstract
Understanding how woody plants cope with severe water shortages is critical, especially
for regions where droughts are becoming more frequent and intense. We studied the effects of
drought intensity, focusing on post-drought resprouting, autumn leaf senescence and the subsequent
spring bud burst. Furthermore, we aimed to study population differentiation in the drought and postdrought responses. We performed a summer dry-out experiment in a common garden of potted
Prunus spinosa L. (Rosaceae) saplings. We looked at the responses in different visual stress symptom
categories and at provenance differentiation between a local (Western Europe), a more southern and
a more northern provenance. The chance on post-drought resprouting was larger for the more
severely affected plants, and the timing of resprouting was earlier than for the less severely affected
ones. The plants that displayed wilting of the leaves during the drought had a leaf senescence 2.7
days earlier than the controls, whereas plants with 25 to 75% and more than 75% of desiccated leaves
were 7 and 15 days later, respectively. During the drought, the local provenance was the first to
develop visual symptoms. Still, for the plants with no to mild symptoms due to the drought, this
provenance displayed a larger chance for post-drought resprouting. Among the control plants, the
northern provenance was earlier, and the southern was later in leaf senescence compared to the local
provenance. This differentiation disappeared for the plants with more than 25% of desiccated leaves
due to the drought. Whereas leaf senescence could be earlier or later depending on the developed
drought symptoms, the timing of bud burst was only delayed. Results indicate that resprouting and
timing of leaf senescence are responsive to the severity of the experienced drought in a provenance
dependent way
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Bibliographic citation
Kristine Vander, M.; Stefaan Moreels, S.; Damien Buisse, K. V. Campenhout; Ed. Influence of Summer Drought on Resprouting and Leaf Senescence in a Common Garden of Prunus spinosa L. Preprints, 2025
AGROVOC subjects
EstrĆ©s hĆdricoSequĆa
Prunus spinosa
DecoloraciĆ³n
AdaptaciĆ³n