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Review article - Peer-reviewed, 2016

CO2 Sensing and CO2 peculation of Stomatal Conductance: Advances and Open Questions

Engineer, Cawas B.; Hashimoto-Sugimoto, Mimi; Negi, Juntaro; Israelsson-Nordstrom, Maria; Azoulay-Shemer, Tamar; Rappel, Wouter-Jan; Iba, Koh; Schroeder, Julian I.


Guard cells form epidermal stomatal gas-exchange valves in plants and regulate the aperture of stomatal pores in response to changes in the carbon dioxide (CO2) concentration ((CO2]) in leaves. Moreover, the development of stomata is repressed by elevated CO2 in diverse plant species. Evidence suggests that plants can sense [CO2] changes via guard cells and via mesophyll tissues in mediating stomata! movements. We review new discoveries and open questions on mechanisms mediating CO2-regulated stomatal movements and CO2 modulation of stomatal development, which together function in the CO2 regulation of stomatal conductance and gas exchange in plants. Research in this area is timely in light of the necessity of selecting and developing crop cultivars that perform better in a shifting climate.

Published in

Trends in Plant Science
2016, volume: 21, number: 1, pages: 16-30

Authors' information

Engineer, Cawas B
University of California San Diego
Hashimoto-Sugimoto, Mimi
Kyushu University
Negi, Juntaro
Kyushu University
Azoulay-Shemer, Tamar
University of California San Diego
Rappel, Wouter-Jan
University of California San Diego
Iba, Koh
Kyushu University
Schroeder, Julian I
University of California San Diego

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