An RNA chaperone, AtCSP2, negatively regulates salt stress tolerance
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- An RNA chaperone, AtCSP2, negatively regulates salt stress tolerance
- Sasaki K.; Liu Y.; Myung-Hee Kim; Imai R.
- PLANT SIGNALING AND BEHAVIOR, v.10, no.8, pp.e1042637 -
- TAYLOR & FRANCIS INC
- Cold shock domain (CSD) proteins are RNA chaperones that destabilize RNA secondary structures. Arabidopsis Cold Shock Domain Protein 2 (AtCSP2), one of the 4 CSD proteins (AtCSP1-AtCSP4) in Arabidopsis, is induced during cold acclimation but negatively regulates freezing tolerance. Here, we analyzed the function of AtCSP2 in salt stress tolerance. A double mutant, with reduced AtCSP2 and no AtCSP4 expression (atcsp2–3 atcsp4–1), displayed higher survival rates after salt stress. In addition, overexpression of AtCSP2 resulted in reduced salt stress tolerance. These data demonstrate that AtCSP2 acts as a negative regulator of salt stress tolerance in Arabidopsis. © 2015 Taylor and Francis Group, LLC
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