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The nitrate signalling pathway now has a backbone. CPK calcium-dependent kinases are the long-awaited molecular link between major players in this pathway, the membrane-located nitrate transceptor NRT1.1 and the NLP transcription factors.
Rising atmospheric CO2 is expected to boost crop yields during drought events because it promotes stomatal closure and saves water. However, field experiments with soybean in a simulated future CO2 atmosphere suggest that crop canopy interactions with climate might prevent this mechanism from delivering its expected benefits.