Morpho-anatomical and physiological traits in saplings of drought-tolerant Mediterranean woody species
| Autor: | Anna Dal Borgo, Tadeja Savi, Stefano Martellos, Veronica Lee Love, Andrea Nardini |
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| Přispěvatelé: | Savi, Tadeja, Love, VERONICA LEE, DAL BORGO, Anna, Martellos, Stefano, Nardini, Andrea |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Mediterranean climate Drought tolerance Functional traits Mediterranean flora PV curves Vulnerability curves Young trees Forestry Physiology Ecology Plant Science Turgor pressure Biology Young tree 010603 evolutionary biology 01 natural sciences Vulnerability curve Resistance (ecology) Plant physiology Reforestation Morpho biology.organism_classification Apoplast Functional trait PV curve Agronomy 010606 plant biology & botany |
| DOI: | 10.1007/s00468-017-1533-7 |
| Popis: | Easily measurable functional traits can be used as proxies in the selection of drought-tolerant saplings for reforestation in Mediterranean ecosystems. Heat and drought events—increasing both in frequency and severity—have led to forest decline, and are a serious threat for the Mediterranean biome. Whereas drought tolerance of adult trees of different Mediterranean species has been widely investigated, this is not the case for saplings and young trees. We analysed correlations and trade-offs among leaf (water potential at the turgor loss point, Ψ tlp, modulus of elasticity, e, osmotic potential at full turgor, π 0, leaf capacitance, C leaf_dw, leaf venation, VLA, leaf mass per area, LMA) and stem (wood capacitance and wood density, C wood and D wood, stem-specific conductivity and water potential inducing 50% loss of hydraulic conductance) functional traits of saplings for 14 woody species of the Mediterranean flora. The results support previously reported correlations among functional traits known to confer drought tolerance to plants. In particular, Ψ tlp was positively correlated to π 0, C leaf_dw and VLA, while negatively correlated to e and LMA. A highly significant correlation was highlighted between C wood and D wood. Overall, we observed surprisingly low symplastic and apoplastic resistance. We identify some easily measurable traits (π 0 and LMA), which evidence seedlings’ ability to cope with drought, and which therefore could be used as proxies in the selection of drought-tolerant saplings for reforestation in Mediterranean areas. |
| Databáze: | OpenAIRE |
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