| 摘要 |
Cloned DNA is disclosed comprising a nodD-related gene of Rhizobium japonicum USDA 191, or a functionally equivalent homolog thereof. The nodD-related gene may, for example, be nodD-r1 or nodD-r2. Also disclosed are promoters of nodD-r1 or nodD-r2 and functionally equivalent homologs having at least 90% sequence homology thereto, in combination with an extraneous coding sequence, the combination being expressible in a Rhizobium host. |
