Publications by authors named "Jonas Chaves Alvim"
Accelerating stomatal kinetics through synthetic optogenetics and mutations that enhance guard cell K+ flux has proven a viable strategy to improve water use efficiency and biomass production. Stomata of the model C4 species Gynandropsis gynandra, a relative of the C3 plant Arabidopsis thaliana, are similarly fast to open and close. We identified and cloned the guard cell rectifying outward K+ channel (GROK) of Gynandropsis and showed that GROK is preferentially expressed in stomatal guard cells.
View Article and Find Full Text PDFStomata are microscopic pores at the surface of plant leaves that facilitate gaseous diffusion to support photosynthesis. The guard cells around each stoma regulate the pore aperture. Plants that carry out C photosynthesis are usually more resilient than C plants to stress, and their stomata operate over a lower dynamic range of CO within the leaf.
View Article and Find Full Text PDFStomata of plant leaves open to enable CO entry for photosynthesis and close to reduce water loss via transpiration. Compared with photosynthesis, stomata respond slowly to fluctuating light, reducing assimilation and water use efficiency. Efficiency gains are possible without a cost to photosynthesis if stomatal kinetics can be accelerated.
View Article and Find Full Text PDFArticle Synopsis
- Membrane voltage is created by the movement of ions through ATPases, transporters, and channels, serving as a key component for bioenergetics and signal transduction.
- The understanding of membrane voltage includes its roles in various potential types (action, systemic, and variation), influencing transport and communication within and between cells.
- Voltage acts as both a driving force for ion transport and a result of charge movement, impacting signaling pathways and contributing to responses like gene expression and resistance to environmental stress.