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Bradbury the illustrated man5/11/2023 lanceolata (the narrow leaf plantain), seeds collected from the spring site showed a counter-intuitive increase in stomatal index and density. When grown under elevated CO2 concentrations P. Considerable evidence exists to show that stomatal numbers have declined across geological time and that this is linked to CO2 concentration, but few CO2-sensitive stomatal patterning genes have ever been identified. From this, detailed phenotyping data were collected, including data for stomatal patterning, photosynthetic performance and growth. Studying evolutionary responses to this aspect of environmental change is difficult, but here we use a CO2 spring site where plants have been exposed for multiple generations to concentrations of CO2 predicted for 2050. In contrast, much evidence is available on plant acclimation mechanisms and phenotypinc plasticity in future high CO2 concentrations. available to support this idea that plants subjected to future predicted concentrations of carbon dioxide may adapt. Plant fossil samples suggest that atmospheric CO2 may be acting as a selective agent driving evolution, but limited evidence is. On average there has been a rise of 3 ppm per year. Plant adaptation to elevated atmospheric carbon dioxide (CO2) is of great interest, as the concentration of this gas in the atmosphere has risen by more than 30% to 388 µmol mol-1 since the industrial revolution.
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