- Use of nodulation pattern, stress tolerance, nodC gene amplification, RAPD-PCR and RFLP-16S rDNA analysis to discriminate genotypes of Rhizobium leguminosarum biovar viciae. Moschetti, G., Peluso, A., Protopapa, A., Anastasio, M., Pepe, O., Defez, R. Syst. Appl. Microbiol. (2005)