The GmENOD40-2 gene was isolated from a soybean genomic library and th
e nucleotide sequence of a 3 kb EcoRI/HindIII fragment was determined.
A 1.7 kb fragment of the GmENOD40-2 promoter region was used in a tra
nscriptional fusion construct with GUS. In transgenic Vicia nodules co
ntaining this construct, beta-glucuronidase activity was detected in t
he pericycle of the nodule vascular bundles as well as in the root per
icycle at the attachment point of the nodule.