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Expression of a CO2-permeable aquaporin enhances mesophyll conductance in the C4 species Setaria viridis

Ermakova, Maria; Osborn, Hannah; Groszmann, Michael; Bala, Soumi; Bowerman, Andrew; McGaughey, Samantha; Byrt, Caitlin; Alonso Cantabrana, Hugo; Tyerman, Stephen D; Furbank, Robert; Sharwood, Robert; von Caemmerer, Susanne


A fundamental limitation of photosynthetic carbon fixation is the availability of CO2. In C4 plants, primary carboxylation occurs in mesophyll cytosol, and little is known about the role of CO2 diffusion in facilitating C4 photosynthesis. We have examined the expression, localization, and functional role of selected plasma membrane intrinsic aquaporins (PIPs) from Setaria italica (foxtail millet) and discovered that SiPIP2;7 is CO2-permeable. When ectopically expressed in mesophyll cells of S....[Show more]

CollectionsANU Research Publications
Date published: 2021
Type: Journal article
Source: eLife
DOI: 10.7554/eLife.70095
Access Rights: Open Access


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