Nickel Resistance Determinants in Bradyrhizobium Strains from Nodules of the Endemic New Caledonia Legume Serianthes calycina |
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| Authors: | Cl mence Chaintreuil, Fr d ric Rigault, Lionel Moulin, Tanguy Jaffr , Joë l Fardoux, Eric Giraud, Bernard Dreyfus, Xavier Bailly |
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| Affiliation: | Clémence Chaintreuil, Frédéric Rigault, Lionel Moulin, Tanguy Jaffré, Joël Fardoux, Eric Giraud, Bernard Dreyfus, and Xavier Bailly |
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| Abstract: | Bradyrhizobium strains, isolated in New Caledonia from nodules of the endemic legume Serianthes calycina growing in nickel-rich soils, were able to grow in the presence of 15 mM NiCl2. The genomes of these strains harbored two Ni resistance determinants, the cnr and nre operons. By constructing a cnrA mutant, we demonstrated that the cnr operon determines the high nickel resistance in Bradyrhizobium strains. |
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