1. Adams TH, Chelm BK (1988) Effects of oxygen levels on the transcription of nif and gln genes in Bradyrhizobium japonicum. J Gen Microbiol 134:611–618
2. Adams TH, Chelm BK (1984) The nifH and nifDK promoter regions from Rhizobium japonicum share structural homologies with each other and with nitrogen-regulated promoters from other organisms. J Mol Appl Genet 2:392–405
3. Adams TH, McClung CR, Chelm BK (1984) Physical organization of the Bradyrhizobium japonicum nitrogenase gene region. J Bacteriol 159:857–862
4. Bishop JO (1972) DNA-RNA hybridization. In: Diczfalusy L (ed) Karolinska symposia on research methods in reproductive endochrinology. 5th symposium. Karolinska Institute, Stockholm, pp 247–273
5. Carlson TA, Guerinot ML, Chelm BK (1985) Characterization of the gene encoding glutamine synthetase I (glnA) from Bradyrhizobium japonicum. J Bacteriol 162:698–703