Affiliation:
1. Department of Biological Sciences, University of Texas at Dallas, Richardson, Texas, USA
Abstract
The bacterium
Paracoccus denitrificans
is a model for the process of denitrification, by which nitrate is reduced to dinitrogen during anaerobic growth. Denitrification is important for soil fertility and greenhouse gas emission and in waste and water treatment processes. The ability of bacteria to grow as a biofilm attached to a solid surface is important in many different contexts. In this paper, we report that attached growth of
P. denitrificans
is stimulated by nitric oxide, an intermediate in the denitrification pathway. We also show that calcium ions stimulate attached growth, and we identify a large calcium binding protein that is required for growth on a polystyrene surface. We identify components of a signaling pathway through which nitric oxide may regulate biofilm formation. Our results point to an intimate link between metabolic processes and the ability of
P. denitrificans
to grow attached to a surface.
Publisher
American Society for Microbiology
Subject
Molecular Biology,Microbiology
Cited by
14 articles.
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