Expression of a carbonic anhydrase gene is induced by environmental stresses in Rice (Oryza sativa L.)
2007
Yu, Song | Zhang, Xinxin | Guan, Qingjie | Takano, Tetsuo | Liu, Shenkui
Expression of the gene (OsCA1) coding for carbonic anhydrase (CA) in leaves and roots of rice was induced by environmental stresses from salts (NaCl, NaHCO₃ and Na₂CO₃), and osmotic stress (10%, w/v, PEG 6000). CA activity of rice seedlings more than doubled under some of these stresses. Transgenic Arabidopsis over-expressing OsCA1 had a greater salt tolerance at the seedling stage than wild-type plants in 1/2 MS medium with 5 mM NaHCO₃, 50 mM NaCl, on 100 mM NaCl. Thus CA expression responds to environmental stresses and is related to stress tolerance in rice.
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