Open AccessIsolation and characterization of oxygen sensitive mutants of Azotobacter vinelandii
Author(s) -
Iwahashi Hitoshi,
Hachiya Yoshinobu,
Someya Junichiro
Publication year - 1991
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1991.tb04324.x
Subject(s) - azotobacter vinelandii , catalase , mutant , oxygen , chemistry , strain (injury) , microbiology and biotechnology , biochemistry , isolation (microbiology) , biology , enzyme , bacteria , gene , genetics , nitrogen fixation , nitrogenase , organic chemistry , anatomy
Summary Thirteen new types of oxygen‐sensitive mutants were isolated from Azotobacter vinelandii , without any selection on carbon sources. Three of these showed decreased respiratory or catalase activity, and the other ten, the same level of activity as the parent strain. The oxygen protection mechanism appears due not only to the respiratory activity but may also involve catalase or another, yet unknown, factor(s).