Sequence and mutational analysis of the common nodBCIJ region of Rhizobium sp. (Oxytropis arctobia) strain N33, a nitrogen-fixing microsymbiont of both arctic and temperate legumes.

Abstract excerpt

By heterologous hybridization, we have identified the common nodulation genes nodBCIJ of Rhizobium sp. strain N33 within a 8.2-kb PstI fragment. The nodBCIJ genes are located within a 4,620-bp region which also included a consensus nod box promoter. The four open reading frames coding for the nodBCIJ genes contain 657, 1,353, 915, and 789 nucleotides, respectively. We found that the nodA gene was not adjacent to...

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