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Response to elevated CO2 at varying nitrate supply in durum wheat
On the cover: Photosynthetic acclimation to elevated CO2 can be intensified by low N availability. Vicente et al. (on pp. 2133-2146) performed an integrative transcript, biochemical and physiological analysis to assess the effects of elevated CO2 at two NO3− concentrations on durum wheat-grown hydroponically. They showed that photosynthetic acclimation to CO2 enrichment at low NO3- supply was associated with inhibition of leaf NO3− assimilation, while at high NO3− levels, up-regulation of root N metabolism attenuated the acclimatory response to elevated CO2.
The cover image shows an overview of the main carbon-nitrogen metabolic pathways analysed biochemically and molecularly to investigate wheat responses to elevated CO2. Image supplied by Rubén Vicente (Abiotic Stress Department, Institute of Natural Resources and Agrobiology of Salamanca, IRNASA-CSIC, Spain).
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