Acclimation to partial shading or full sunlight determines the performance of container-grown Fraxinus ornus to subsequent drought stress |
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| Authors: | Alessio Fini Francesco Ferrini Martina Di Ferdinando Cecilia Brunetti Cristiana Giordano Francesca Gerini Massimiliano Tattini |
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| Affiliation: | 1. Dipartimento di Scienze delle Produzioni Agroalimentari e dell’Ambiente, Università di Firenze, Viale delle Idee 30, I-50019 Sesto F.no, Firenze, Italy;2. Centro di Microscopie Elettroniche, Laura Bonzi, Consiglio Nazionale delle Ricerche, Via Madonna del Piano 10, I-50019, Sesto F.no, Firenze, Italy;3. Istituto per la Protezione delle Piante, Consiglio Nazionale delle Ricerche, Via Madonna del Piano 10, I-50019, Sesto F.no, Firenze, Italy;1. University of Novi Sad, Faculty of Agriculture, Trg D. Obradovica 8, 21000 Novi Sad, Serbia;2. University of Belgrade, Faculty of Forestry, Kneza Viseslava 1, 11000 Belgrade, Serbia;1. National University of Rwanda, Faculty of Science, University Avenue, Box 117, Huye, Rwanda;2. Department of Environmental Studies, Antioch University New England, 40 Avon St., Keene, NH 0343l, USA;3. School of Landscape Architecture, Beijing Forestry University, Beijing 100083, PR China;4. DFGFI-Karisoke Research Center, P.O. Box 1005, Musanze, Rwanda;1. School of Landscape Architecture, Lincoln University, P.O. Box 85084, Lincoln 7647, Christchurch, New Zealand;2. Department of Landscape Architecture, University of Guelph, 50 Stone Road East, Guelph, Ontario N1G 2W1, Canada;3. Department of Recreation and Leisure Studies, University of Waterloo, 200 University West, Waterloo, Ontario N2L 3G1, Canada;4. School of Planning, University of Waterloo, 200 University West, Waterloo, Ontario N2L 3G1, Canada;1. Environmental Psychology, Department of Architecture and Built Environment, Lund University, Lund, Sweden;2. Department of Work Science, Business Economics, and Environmental Psychology, Swedish University of Agricultural Sciences, Sweden;3. County Administrative Board of Skåne, Sweden;1. Department of Plant Physiology and Molecular Plant Biology, Institute of Biology, Eötvös Loránd University, Pázmány P. sétány 1/C, H-1117 Budapest, Hungary;2. Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Bl. 21, BG-1113 Sofia, Bulgaria;3. Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University, Pázmány P. sétány 1/C, H-1117 Budapest, Hungary;4. Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Bl. 21, BG-1113 Sofia, Bulgaria |
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| Abstract: | Cultivation techniques in the nursery aimed to improve tolerance to abiotic stresses after planting in the landscape may have great ecological value. Here we tested the hypothesis that the irradiance at which plants grow in the nursery may impact on their responses to a subsequent drought stress. Measurements of relevant morpho-anatomical, physiological and biochemical traits were conducted in Fraxinus ornus, a member of the Oleaceae family of increasing interest as an urban tree. Leaves developed under moderate shade displayed a lower ability to preserve water balance, thus suffering from a greater decline in net CO2 assimilation than leaves acclimated to full sunlight, when subsequently exposed to drought stress. Shaded leaves also displayed an inherently lower capacity to dissipate excess radiant energy through nonphotochemical quenching, thus suffering from greater oxidative damage than sun leaves under drought. These results indicate that sunlight irradiance at which container-grown ash trees grow in the nursery may tightly affect the tolerance to subsequent drought stress. This may have great value for enhancing the establishment of container-grown plants in the landscape, as fully leaved plants may suffer from severe drought stress during early stages of acclimation in the landscape. |
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| Keywords: | Cross tolerance Container production Drought Leaf anatomy Nursery pre-conditioning Urban trees |
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