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Appl. Environ. Microbiol. doi:10.1128/AEM.02831-06
Copyright (c) 2007, American Society for Microbiology and/or the Listed Authors/Institutions. All Rights Reserved.

Global Transcriptional Response of Nitrosomonas europaea to Chloroform and Chloromethane

Department of Botany and Plant Pathology and; Department of Microbiology, Oregon State University, Corvallis OR 97331, USA.; State Research Institute of Genetics and Selection of Industrial Microorganisms, 1st Dorozhnyj proezd 1, Moscow, 113535 Russia.; Kharkevich Institute for Information Transmission Problems RAS, Bolshoi Karetny per. 19, Moscow, 127994, Russia

^* To whom correspondence should be addressed. Email: arpd{at}science.oregonstate.edu.

	Abstract

Upon exposure of Nitrosomonas europaea to chloroform (7 µM, 1 hr), transcripts for 501 of 2460 genes were found at higher levels in treated relative to untreated cells and transcripts for 251 genes were found at lower levels. With chloromethane (3.2 mM, 1 hr), transcripts for 175 genes were at higher levels and for 67 genes were at lower levels. Transcripts for 37 genes were at higher levels following both treatments and included genes for heat shock proteins, -factors of the extracytoplasmic function subfamily and toxin-antitoxin loci. N. europaea has higher levels of transcripts for a variety of defense genes when exposed to chloroform or chloromethane.

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