Acclimation potential of three evergreen tree species to wind-induced water stress in an urban green-roof environment
| Autor: | Yuiko Noguchi, Yuki Namba, Hiroaki Ishii, Chinatsu Hara, Fujita Masashi, Sumihiro Inoue |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Ecology Osmotic adjustment Turgor pressure Soil Science Greenhouse Sowing Forestry 010501 environmental sciences Evergreen Biology biology.organism_classification 010603 evolutionary biology 01 natural sciences Acclimatization Horticulture Leaf hydraulics Turgor loss Leaf dynamics Osmotic pressure Water content Quercus myrsinifolia 0105 earth and related environmental sciences |
| Zdroj: | Urban Forestry & Urban Greening. 43:126386 |
| ISSN: | 1618-8667 |
| DOI: | 10.1016/j.ufug.2019.126386 |
| Popis: | We compared acclimation potential of three native, evergreen tree species to wind-exposure in an urban green-roof environment. One year after planting on the green roof, Machilus thunbergii retained all leaves and produced new leaves. In contrast, Fraxinus griffithii, and Quercus myrsinifolia shed all leaves but produced more new leaves than the previous year. After two years, current-year leaves of all three species had acclimated hydraulically (lower osmotic potentials at saturation and turgor loss) to wind-induced water stress and leaf number increased to four to eight times the initial amount. When trees were exposed to simulated winds in a greenhouse experiment, osmotic adjustment was observed for current-year leaves of M. thunbergii, whereas leaves of F. griffithii and Q. myrsinifolia had hydraulic traits more vulnerable to wind-induced water stress (higher osmotic potential and relative water content at turgor loss). We inferred that, M. thunbergii invests in hydraulic acclimation to retain current-year leaves in response to increased wind, whereas F. griffithii and Q. myrsinifolia allocate resources to new leaf production. Our results suggest both strategies achieve tree-level acclimation to wind exposure. |
| Databáze: | OpenAIRE |
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