http://www.cnr.it/ontology/cnr/individuo/prodotto/ID167083
Influence of growth temperature and measuring temperature on isoprene emission, diffusive limitations of photosynthesis and respiration in hybrid poplars (Articolo in rivista)
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- Influence of growth temperature and measuring temperature on isoprene emission, diffusive limitations of photosynthesis and respiration in hybrid poplars (Articolo in rivista) (literal)
- Anno
- 2011-01-01T00:00:00+01:00 (literal)
- Alternative label
Fares S., Mahmood T., Liu S., Loreto F., Centritto M. (2011)
Influence of growth temperature and measuring temperature on isoprene emission, diffusive limitations of photosynthesis and respiration in hybrid poplars
in Atmospheric environment (1994)
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- Fares S., Mahmood T., Liu S., Loreto F., Centritto M. (literal)
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Department of Environmental Sciences, Pir Mehr Ali Shah Arid Agriculture University, Murree Road, Rawalpindi, Pakistan
Chinese Academy of Forestry, No.1 Dongxiaofu, XiangYi Road, Haidian, Beijing 100091, PR China
CNR-IPP
CNR-IBAF (literal)
- Titolo
- Influence of growth temperature and measuring temperature on isoprene emission, diffusive limitations of photosynthesis and respiration in hybrid poplars (literal)
- Abstract
- Acclimatory and direct responses of photosynthesis (A), stomatal (gs) and mesophyll (gm) conductance, light (RL) and dark (RD) respiration, and isoprene emission, measured at different temperatures, were compared in one-year-old Populus x euramericana saplings grown at 25°C, 35 °C, and in the saplings grown initially at 35°C and then exposed for two weeks at 25°C. Results show that A, gs and gm were significantly lower at 35°C, than at the other growth temperatures. This resulted in a downward acclimation of these parameters over the range of measuring temperatures. Both RL and RD also showed a considerable downward acclimation. However, the respiration to photosynthesis ratio increased with high temperatures, for RL and RD were more responsive to increasing growth temperatures than A at all measuring temperatures. This type of acclimation would lead to a shift in the carbon balance between photosynthesis and respiration under changing climatic conditions. Isoprene emission was greatly affected by temperature treatments and showed a downward acclimation to higher temperatures.
Respiration and isoprene emission rates were directly related, independently of growth and measuring temperatures. These findings may be likely relevant to predict the emissions of isoprenoid in globally changing environmental condition (literal)
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