Calcium regulation of theArabidopsisNa+/K+transporter HKT1;1 improves seed germination under salt stress
Ancy E.J. Chandran,
Aliza Finkler,
Tom Aharon Hait
et al.
Abstract:Calcium is known to improve seed-germination rates under salt stress. We investigated the involvement of calcium ions (Ca2+) in regulating HIGH AFFINITY K+ TRANSPORTER 1 (HKT1;1), which encodes a Na+/K+ transporter, and its post-translational regulator TYPE 2C PROTEIN PHOSPHATASE 49 (PP2C49), in germinating Arabidopsis thaliana seedlings. Germination rates of hkt1 mutant seeds under salt stress remained unchanged by CaCl2 treatment in wild-type Arabidopsis, whereas pp2c49 mutant seeds displayed improved salt-s… Show more
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