Tech ID: 20.665 & 23.700
Stomata allow CO2 uptake for photosynthetic carbon assimilation but often at the expense of water loss via transpiration. Stomatal opening occurs in response to changes in atmospheric CO2 concentration, ambient light, atmospheric relative humidity and ABA. Approaches to enhance water-use efficiency in plants generally come up against this inherent trade-off between carbon assimilation and water use. Prof Mike Blatt and colleagues at the University of Glasgow have devised a gene-editable approach that accelerates the kinetics of stomatal opening and closure, thus promoting a rapid transition to carbon assimilation under high-light light intensities, while maintaining plant water status when carbon demand is low.
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Horaruang W et al (2022). Engineering a K+ channel ‘sensory antenna’ enhances stomatal kinetics, water use efficiency and photosynthesis. Nat. Plants. DOI: https://doi.org/10.1038/s41477-022-01255-2