Mesophyll diffusion conductance to CO 2: An unappreciated central player in photosynthesis

Flexas, Jaume; Barbour, Margaret M.; Brendel, Oliver; Cabrera, H.M.; Carriquí, Marc; Díaz-Espejo, Antonio; Douthe, Cyril; Dreyer, Erwin; Ferrio Díaz, Juan Pedro; Galle, Alexander; Galmés, Jeroni; Kodama, Naomi; Medrano, Hipolito; Niinemets, Ülo; Peguero Pina, José Javier; Pou, Alicia; Ribas-Carbó, Miquel; Tomas, Magdalena; Tosens, Tiina; Warren, Charles R.

doi:https://doi.org/10.1016/j.plantsci.2012.05.009

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Issue date

2012-11

Author

Flexas, Jaume

Barbour, Margaret M.

Brendel, Oliver

Cabrera, H.M.

Carriquí, Marc

Díaz-Espejo, Antonio

Douthe, Cyril

Dreyer, Erwin

Ferrio Díaz, Juan Pedro

Galle, Alexander

Galmés, Jeroni

Kodama, Naomi

Medrano, Hipolito

Niinemets, Ülo

Peguero Pina, José Javier

Pou, Alicia

Ribas-Carbó, Miquel

Tomas, Magdalena

Tosens, Tiina

Warren, Charles R.

Suggested citation

Flexas, Jaume; Barbour, Margaret M.; Brendel, Oliver; Cabrera, H.M.; Carriquí, Marc; Díaz-Espejo, Antonio; ... Warren, Charles R.. (2012) . Mesophyll diffusion conductance to CO 2: An unappreciated central player in photosynthesis. Plant Science, 2012, vol. 193-194 p. 70-84. https://doi.org/10.1016/j.plantsci.2012.05.009.

Abstract

Mesophyll diffusion conductance to CO 2 is a key photosynthetic trait that has been studied intensively in the past years. The intention of the present review is to update knowledge of g m, and highlight the important unknown and controversial aspects that require future work. The photosynthetic limitation imposed by mesophyll conductance is large, and under certain conditions can be the most significant photosynthetic limitation. New evidence shows that anatomical traits, such as cell wall thickness and chloroplast distribution are amongst the stronger determinants of mesophyll conductance, although rapid variations in response to environmental changes might be regulated by other factors such as aquaporin conductance.Gaps in knowledge that should be research priorities for the near future include: how different is mesophyll conductance among phylogenetically distant groups and how has it evolved? Can mesophyll conductance be uncoupled from regulation of the water path? What are the main drivers of mesophyll conductance? The need for mechanistic and phenomenological models of mesophyll conductance and its incorporation in process-based photosynthesis models is also highlighted.

URI

http://hdl.handle.net/10459.1/48665

DOI

https://doi.org/10.1016/j.plantsci.2012.05.009

Is part of

Plant Science, 2012, vol. 193-194 p. 70-84