Herbaspirillum seropedicae Z67 is a nitrogen-fixing bacterium able to colonize the rhizosphere and the interior of several plants. As iron is a key element for nitrogen fixation, we examined the response of this microorganism to iron deficiency under nitrogen fixing conditions. We identified a H. seropedicae exbD gene that was induced in response to iron limitation and is involved in iron homeostasis. We found that an exbD mutant grown in iron-chelated medium is unable to fix nitrogen. Moreover, we provide evidence that expression of the nifH and nifA genes is iron dependent in a H. seropedicae genetic background. © 2006 Federation of European Microbiological Societies Published by Blackwell Publishing Ltd. All rights reserved.
CITATION STYLE
Rosconi, F., Souza, E. M., Pedrosa, F. O., Platero, R. A., González, C., González, M., … Fabiano, E. R. (2006). Iron depletion affects nitrogenase activity and expression of nifH and nifA genes in Herbaspirillum seropedicae. FEMS Microbiology Letters, 258(2), 214–219. https://doi.org/10.1111/j.1574-6968.2006.00218.x
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