naa a22 4500 510752810 CHVBK 20180411083110.0 cr unu---uuuuu 180411e20131101xx s 000 0 eng 10.1007/s11270-013-1761-4 doi (NATIONALLICENCE)springer-10.1007/s11270-013-1761-4 Intra-annual Pattern of Photosynthesis, Growth and Stable Isotope Partitioning in a Poplar Clone Subjected to Ozone and Water Stress [Elektronische Daten] [Martina Pollastrini, Rosanna Desotgiu, Federica Camin, Luca Ziller, Riccardo Marzuoli, Giacomo Gerosa, Filippo Bussotti] An experiment in open-top chambers was carried out in summer 2008 in Curno (northern Italy) in order to study the effects of ozone and drought stress on net photosynthesis, growth and stable isotope partitioning on cuttings of an ozone-sensitive poplar clone (Oxford). The biomass (as dry weight) of stems, leaves and roots was assessed five times during the growing season on a set of plants intended for destructive measurements (set 1). Another set of plants (set 2) was used for repeated measurements (net photosynthesis) and then destroyed at the end of the experiment. The dry weight of the stems in set 1 plants was calculated using allometric relations. The results showed that drought stress had a strong effect on all the parameters assessed. Ozone did not have any effect on biomass allocation in woody stems and stable isotope composition but reduced root/shoot ratios and caused loss of leaves during the growing season. The loss of leaves in the lower part of the crown was partly recovered with the emission of new young leaves in the upper part, thus restoring the overall photosynthetic apparatus. We conclude that the metabolic costs suffered to repair damage and support growth, and the reduction in starch reserves in the roots can compromise growth and the capacity to cope with stress factors in subsequent years. Springer Science+Business Media Dordrecht, 2013 Biomass nationallicence Carbon allocation nationallicence Leaf demography nationallicence Root/shoot ratio nationallicence δ 13C nationallicence δ 18O nationallicence Pollastrini Martina Department of Agri-food Production and Environmental Sciences, University of Florence, Piazzale delle Cascine 28, 50144, Firenze, Italy aut Desotgiu Rosanna Department of Agri-food Production and Environmental Sciences, University of Florence, Piazzale delle Cascine 28, 50144, Firenze, Italy aut Camin Federica IASMA Research and Innovation Centre, Fondazione E. Mach, via E. Mach 1, 38010, San Michele all'Adige, Trentino, Italy aut Ziller Luca IASMA Research and Innovation Centre, Fondazione E. Mach, via E. Mach 1, 38010, San Michele all'Adige, Trentino, Italy aut Marzuoli Riccardo Department of Mathematics and Physics, Catholic University, Via Musei 41, 25121, Brescia, Italy aut Gerosa Giacomo Department of Mathematics and Physics, Catholic University, Via Musei 41, 25121, Brescia, Italy aut Bussotti Filippo Department of Agri-food Production and Environmental Sciences, University of Florence, Piazzale delle Cascine 28, 50144, Firenze, Italy aut Water, Air, & Soil Pollution Springer Netherlands 224/11(2013-11-01), 1-11 0049-6979 224:11<1 2013 224 11270 https://doi.org/10.1007/s11270-013-1761-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11270-013-1761-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pollastrini Martina Department of Agri-food Production and Environmental Sciences, University of Florence, Piazzale delle Cascine 28, 50144, Firenze, Italy aut NATIONALLICENCE 700 1- Desotgiu Rosanna Department of Agri-food Production and Environmental Sciences, University of Florence, Piazzale delle Cascine 28, 50144, Firenze, Italy aut NATIONALLICENCE 700 1- Camin Federica IASMA Research and Innovation Centre, Fondazione E. Mach, via E. Mach 1, 38010, San Michele all'Adige, Trentino, Italy aut NATIONALLICENCE 700 1- Ziller Luca IASMA Research and Innovation Centre, Fondazione E. Mach, via E. Mach 1, 38010, San Michele all'Adige, Trentino, Italy aut NATIONALLICENCE 700 1- Marzuoli Riccardo Department of Mathematics and Physics, Catholic University, Via Musei 41, 25121, Brescia, Italy aut NATIONALLICENCE 700 1- Gerosa Giacomo Department of Mathematics and Physics, Catholic University, Via Musei 41, 25121, Brescia, Italy aut NATIONALLICENCE 700 1- Bussotti Filippo Department of Agri-food Production and Environmental Sciences, University of Florence, Piazzale delle Cascine 28, 50144, Firenze, Italy aut NATIONALLICENCE 773 0- Water, Air, & Soil Pollution Springer Netherlands 224/11(2013-11-01), 1-11 0049-6979 224:11<1 2013 224 11270 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer