scholarly journals Interaction of drought and elevated CO2 concentration on photosynthetic down-regulation and susceptibility to photoinhibition in Japanese white birch seedlings grown with limited N availability

2007 ◽  
Vol 27 (5) ◽  
pp. 727-735 ◽  
Author(s):  
M. Kitao ◽  
T. T. Lei ◽  
T. Koike ◽  
M. Kayama ◽  
H. Tobita ◽  
...  
Keyword(s):  
Elevated Co2 ◽  
Co2 Concentration ◽  
N Availability ◽  
White Birch ◽  
Down Regulation ◽  
Elevated Co2 Concentration

Harvest index combined with impaired N availability constrains the responsiveness of durum wheat to elevated CO2 concentration and terminal water stress

2014 ◽  
Vol 41 (11) ◽  
pp. 1138 ◽  
Author(s):  
Gorka Erice ◽  
Alvaro Sanz-Sáez ◽  
Amadeo Urdiain ◽  
Jose L. Araus ◽  
Juan José Irigoyen ◽  
...  
Keyword(s):  
Water Stress ◽  
Durum Wheat ◽  
Elevated Co2 ◽  
Water Availability ◽  
Harvest Index ◽  
Grain Filling ◽  
Co2 Concentration ◽  
N Availability ◽  
Elevated Co2 Concentration

Despite its relevance, few studies to date have analysed the role of harvest index (HI) in the responsiveness of wheat (Triticum spp.) to elevated CO2 concentration ([CO2]) under limited water availability. The goal of the present work was to characterise the role of HI in the physiological responsiveness of durum wheat (Triticum durum Desf.) exposed to elevated [CO2] and terminal (i.e. during grain filling) water stress. For this purpose, the performance of wheat plants with high versus low HI (cvv. Sula and Blanqueta, respectively) was assessed under elevated [CO2] (700 μmol mol–1 vs 400 μmol mol–1 CO2) and terminal water stress (imposed after ear emergence) in CO2 greenhouses. Leaf carbohydrate build-up combined with limitations in CO2 diffusion (in droughted plants) limited the responsiveness to elevated [CO2] in both cultivars. Elevated [CO2] only increased wheat yield in fully watered Sula plants, where its larger HI prevented an elevated accumulation of total nonstructural carbohydrates. It is likely that the putative shortened grain filling period in plants exposed to water stress also limited the responsiveness of plants to elevated [CO2]. In summary, our study showed that even under optimal water availability conditions, only plants with a high HI responded to elevated [CO2] with increased plant growth, and that terminal drought constrained the responsiveness of wheat plants to elevated [CO2].

Increased nitrate availability in the soil of a mixed mature temperate forest subjected to elevated CO2 concentration (canopy FACE)

2011 ◽  
Vol 18 (2) ◽  
pp. 757-768 ◽  
Author(s):  
Patrick Schleppi ◽  
Inga Bucher-Wallin ◽  
Frank Hagedorn ◽  
Christian Körner
Keyword(s):  
Elevated Co2 ◽  
Temperate Forest ◽  
Co2 Concentration ◽  
Elevated Co2 Concentration ◽  
Nitrate Availability

scholarly journals Impact of elevated CO2 concentration on dynamics of leaf photosynthesis in Fagus sylvatica is modulated by sky conditions

2014 ◽  
Vol 185 ◽  
pp. 271-280 ◽  
Author(s):  
Otmar Urban ◽  
Karel Klem ◽  
Petra Holišová ◽  
Ladislav Šigut ◽  
Mirka Šprtová ◽  
...  
Keyword(s):  
Elevated Co2 ◽  
Fagus Sylvatica ◽  
Co2 Concentration ◽  
Leaf Photosynthesis ◽  
Elevated Co2 Concentration ◽  
Sky Conditions
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