SEARCH

SEARCH BY CITATION

Keywords:

  • Nodulation gene;
  • Photosynthetic Bradyrhizobium;
  • nodA;
  • Insertion sequence;
  • Aeschynomene

Abstract

We isolated and characterized nodA genes from photosynthetic and non-photosynthetic rhizobia nodulating the legume genus Aeschynomene, and found that the nodA sequence from photosynthetic stem-nodulating bacteria was phylogenetically distant from the other already described nodA genes. Characterization of the photosynthetic strain ORS285 common nod gene cluster (nodABC) showed, upstream of nodA, the presence of a new insertion sequence element belonging to the IS3 family and specific to a group of photosynthetic strains from Aeschynomene.