| 摘要 |
<p>Nodulation regulatory genes (nodD genes) of Bradyrhizobium japonicum strains have been isolated and sequenced. Recombinant DNA molecules and vectors containing these regulatory genes are described. These genes, molecules and vectors are useful in the genetic engineering of Rhizobium and Bradhyrhizobium strains. A method for selective expression of structural genes in response to the application of chemical factors which induce B. japonicum nod genes which employs these genes is described.</p> |
