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Effects of reduced carbonic anhydrase activity on CO₂ assimilation rates in Setaria viridis: a transgenic analysis

Osborn, Hannah L; Alonso-Cantabrana, Hugo; Sharwood, Robert E; Covshoff, Sarah; Evans, John R; Furbank, Robert; von Caemmerer, Susanne


In C₄ species, the major β-carbonic anhydrase (β-CA) localized in the mesophyll cytosol catalyses the hydration of CO₂ to HCO₃-, which phosphoenolpyruvate carboxylase uses in the first step of C₄ photosynthesis. To address the role of CA in C₄ photosynthesis, we generated transgenic Setaria viridis depleted in β-CA. Independent lines were identified with as little as 13% of wild-type CA. No photosynthetic defect was observed in the transformed lines at ambient CO₂ partial pressure (pCO₂). At...[Show more]

CollectionsANU Research Publications
Date published: 2017-01
Type: Journal article
Source: Journal of experimental botany
DOI: 10.1093/jxb/erw357


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