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Research Details: Stomatal physiology - Climate change and increasing global population is intensifying the need to find suitable crop plants for sustainable food and fuel production for future generations. Drought conditions and reduced water availability severely impact plant productivity and are considered a global threat to world food security. Stomata and their function therefore play a central role in determining the amount of carbon gained per unit water lost, known as plant water use efficiency and consequently have significant implications for crop yields, as well as global hydrological and carbon cycles. Stomata must ensure an appropriate balance between CO2 demands for photosynthesis and water loss through transpiration by correlating stomatal conductance with mesophyll photosynthetic rates. The underlying mechanisms and signals that promote this relationship are currently unknown. Stomata and photosynthesis respond to a number of environmental cues, however responses are not synchronized, with stomatal adjustments generally an order of magnitude slower than mesophyll responses. The resulting disconnection between stomatal conductance and photosynthetic rate means that under natural fluctuating environmental condition water use efficiency is most likely far from optimal. I am therefore interested in stomatal control of CO2 assimilation and the relation between mesophyll photosynthesis and stomatal behaviour and the signalling pathways that link these two fundamental processes. I also research the role of guard cell chloroplasts in stomatal function and how guard cell photosynthesis may provide a functional link between mesophyll photosynthesis and guard cell aperture.
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Plant, cell & environment (2024)
Florian A. Busch, Elizabeth A. Ainsworth,Anna Amtmann,Amanda P. Cavanagh,Steven M. Driever,John N. Ferguson,Johannes Kromdijk,Tracy Lawson,Andrew D. B. Leakey,Jack S. A. Matthews,Katherine Meacham-Hensold, Richard L. Vath,
PLANT CELL AND ENVIRONMENT (2024)
FRONTIERS IN PLANT SCIENCE (2023): 1334641-1334641
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