ISSN:
1573-5036
Keywords:
azide resistance
;
nitrogen fixation
;
phenethyl alcohol
;
t Rhizobium loti
;
TMPD-oxidase
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract Azide-resistant (AzR) mutants of Rhizobium loti strain NZP2037 were isolated. Mutations conferring azide resistance (azi) appeared at a frequency of 0.5 × 10-7. Nine AzR mutants of R. loti were characterised for their symbiotic behaviour with Lotus pedunculatus plants. In comparison to the wild type parent strain, AzR mutants exhibited either similar or higher symbiotic effectiveness. The azi mutations which enhanced nitrogen fixation as well as improving shoot dry weight of the inoculated plants also increased nodulation. Unlike several azi mutations in Escherichia coli, these azi mutations did not alter sensitivity of R. loti to phenethyl alcohol. One of the AzR mutants exhibited higher micro-aerobic, N′, N′, N′, N′-tetramethyl-p-phenylenediamine (TMPD) oxidase activity.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1004259220587
Permalink