ISSN:
1617-4623
Keywords:
Frankia
;
Nif genes
;
Nitrogen fixation
;
Plasmid
;
Actinorhizal symbiosis
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Summary We report that in DNA from one Frankia sp. strain at least some of the nif genes are located on a large indigenous plasmid of 190 kb. Using the cloned nitrogenase structural genes from Klebsiella pneumoniae as hybridization probes, homology was detected with a 5.6 kb EcoRI fragment from the Frankia sp. plasmid. This 5.6 kb fragment was cloned; used as a probe it hybridized to the nif K, D and H genes from Rhizobium meliloti and Klebsiella pneumoniae. The nif probes also hybridized on total DNA blots to a 10 kb EcoRI fragment that is not present on plasmid DNA, suggesting that the nif genes could be located on more than one replicon.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00331030