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The role of Bradyrhizobium japonicum nitric oxide reductase in nitric oxide detoxification in soya bean root nodules.

Meakin GE, Jepson BJ, Richardson DJ, Bedmar EJ, Delgado MJ

School of Biological Sciences, University of East Anglia (UEA), Norwich NR4 7TJ, UK. g.meakin@uea.ac.uk

The identification of nitric oxide-bound leghaemoglobin within soya bean nodules has led to the question of how Bradyrhizobium japonicum bacteroids overcome the toxicity of this nitric oxide. It has previously been shown that one candidate for nitric oxide detoxification, the respiratory nitric oxide reductase, is expressed in soya bean nodules from plants supplied with nitrate. In this paper, the role of this enzyme in nitric oxide detoxification is assessed and discussion is provided on other possible B. japonicum nitric oxide detoxification systems.

Published 18 January 2006 in Biochem Soc Trans, 34: 195-6.
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