Heterologously expressed protein phosphatase calcineurin downregulates plant plasma membrane H +-ATPase activity at the post-translational level

To investigate the effects of calcineurin expression on cellular ion homeostasis in plants, we have obtained a transgenic cell culture of tomato, expressing constitutively activated yeast calcineurin. Transgenic cells exhibited reduced growth rates and proton extrusion activity in vivo. We show that...

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