Plasmids of Azotobacter vinelandii.
Four laboratory strains and two isolates of Azotobacter vinelandii were found to contain plasmids. Twenty-five laboratory strains which could fix nitrogen did not have free, covalently closed circular plasmid DNA. The plasmids varied in size from 9 to 52 megadaltons, and each strain yielded only one plasmid. No discernible differences in ability to fix nitrogen were found between plasmid-bearing and cured cultures.
Maia
M
M
Department of Biological Sciences, North Texas State University, Denton 76203.
Sanchez
J M
JM
Vela
G R
GR
D001395:Azotobacter / Q000235:genetics*; D004269:DNA, Bacterial / Q000032:analysis; D004270:DNA, Circular / Q000032:analysis; D005798:Genes, Bacterial; D009586:Nitrogen Fixation / Q000235:genetics*; D010957:Plasmids
D004269:DNA, Bacterial; D004270:DNA, Circular