@prefix prodottidellaricerca: . @prefix istituto: . @prefix prodotto: . istituto:CDS010 prodottidellaricerca:prodotto prodotto:ID10602 . @prefix pubblicazioni: . @prefix unitaDiPersonaleInterno: . unitaDiPersonaleInterno:MATRICOLA214 pubblicazioni:autoreCNRDi prodotto:ID10602 . @prefix rdf: . @prefix retescientifica: . prodotto:ID10602 rdf:type retescientifica:ProdottoDellaRicerca , prodotto:TIPO1101 . @prefix rdfs: . prodotto:ID10602 rdfs:label "Water relations and gas exchange in Poplar and willows under water stress and elevated atmospheric CO2 (Articolo in rivista)"@en . @prefix xsd: . prodotto:ID10602 pubblicazioni:anno "2002-01-01T00:00:00+01:00"^^xsd:gYear . @prefix skos: . prodotto:ID10602 skos:altLabel "
Johnson JD, Tognetti R, Paris P (2002)
Water relations and gas exchange in Poplar and willows under water stress and elevated atmospheric CO2
in Physiologia plantarum (Kbh., 1948)
"^^rdf:HTML ; pubblicazioni:autori "Johnson JD, Tognetti R, Paris P"^^xsd:string ; pubblicazioni:paginaInizio "93"^^xsd:string ; pubblicazioni:paginaFine "100"^^xsd:string ; pubblicazioni:altreInformazioni "Rivista internazionale di fisiologia vegetale con impact factor 1,565"^^xsd:string ; pubblicazioni:numeroVolume "115"^^xsd:string . @prefix ns10: . prodotto:ID10602 pubblicazioni:rivista ns10:ID596522 ; pubblicazioni:descrizioneSinteticaDelProdotto "E\u0092 stata valutata, in ambiente controllato, la risposta di cloni di pioppo e salice allo stress idrico ed all\u0092incremento di CO2 atmosferica, fattori accoppiati nelle previsioni di \u0091global change\u0092 collegati all\u0092effetto serra. E\u0092 stata dimostrato che nel salice l\u0092alta concentrazione di CO2 mitiga gli effetti negativi dello stress idrico."^^xsd:string ; skos:note "ISI Web of Science (WOS)"^^xsd:string ; pubblicazioni:affiliazioni "1Univ Dublin, 2Univ Molise, 3CNR"^^xsd:string ; pubblicazioni:titolo "Water relations and gas exchange in Poplar and willows under water stress and elevated atmospheric CO2"^^xsd:string ; prodottidellaricerca:abstract "Predictions of shifts in rainfall patterns as atmospheric [CO2] increases could impact the growth of fast growing trees such as Populus spp. and Salix spp. and the interaction between elevated CO2 and water stress in these species is unknown. The objectives of this study were to characterize the responses to elevated CO2 and water stress in these two species, and to determine if elevated CO2 mitigated drought stress effects. Gas exchange, water potential components, whole plant transpiration and growth response to soil drying and recovery were assessed in hybrid poplar (clone 53-246) and willow (Salix sagitta) rooted cuttings growing in either ambient (350 \u00B5mol mol) or elevated (700 \u00B5mol mol) atmospheric CO2 concentration ([CO2]). Predawn water potential decreased with increasing water stress while midday water potentials remained unchanged (isohydric response). Turgor potentials at both predawn and midday increased in elevated [CO2], indicative of osmotic adjustment. Gas exchange was reduced by water stress while elevated [CO2] increased photosynthetic rates, reduced leaf conductance and nearly doubled instantaneous transpiration efficiency in both species. Dark respiration decreased in elevated [CO2] and water stress reduced Rd in the trees growing in ambient [CO2]. Willow had 56% lower whole plant hydraulic conductivity than poplar, and showed a 14% increase in elevated [CO2] while poplar was unresponsive. The physiological responses exhibited by poplar and willow to elevated [CO2] and water stress, singly, suggest that these species respond like other tree species. The interaction of [CO2] and water stress suggests that elevated [CO2] did mitigate the effects of water stress in willow, but not in poplar." ; prodottidellaricerca:prodottoDi istituto:CDS010 ; pubblicazioni:autoreCNR unitaDiPersonaleInterno:MATRICOLA214 . @prefix parolechiave: . prodotto:ID10602 parolechiave:insiemeDiParoleChiave . ns10:ID596522 pubblicazioni:rivistaDi prodotto:ID10602 . parolechiave:insiemeDiParoleChiaveDi prodotto:ID10602 .