Previous Article | Next Article ![]()
Applied and Environmental Microbiology, September 2001, p. 4293-4304, Vol. 67, No. 9
Department of Applied Chemistry and Microbiology, FIN-00014
University of Helsinki, Finland1;
Institut für Angewandte Mikrobiologie, Justus-Liebig
Universität, D-35392 Giessen,2
Institut für Mikrobiologie, Universität Hannover,
D-30167 Hannover,3 and Deutsche
Sammlung von Mikroorganismen und Zellkulturen, D-38124
Braunschweig,4 Germany; Institut
für Bakteriologie und Tierhygiene, Veterinärmedizinische
Universität, A-1210 Vienna, Austria5;
and Department of Biological Sciences, Louisiana State
University, Baton Rouge, Louisiana 708036
Received 4 December 2000/Accepted 17 June 2001
Nocardiopsis strains were isolated from water-damaged
indoor environments. Two strains (N. alba subsp.
alba 704a and a strain representing a novel species,
ES10.1) as well as strains of N. prasina, N. lucentensis,
and N. tropica produced methanol-soluble toxins that
paralyzed the motility of boar spermatozoa at <30 µg of crude
extract (dry weight) ml
0099-2240/01/$04.00+0 DOI: 10.1128/AEM.67.9.4293-4304.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.
Isolation of Toxigenic Nocardiopsis
Strains from Indoor Environments and Description of Two New
Nocardiopsis Species, N. exhalans sp. nov. and
N. umidischolae sp. nov.
1. N. prasina, N. lucentensis, N. tropica, and strain ES10.1 caused cessation of
motility by dissipating the mitochondrial membrane potential, 
,
of the boar spermatozoa. Indoor strain 704a produced a substance that
destroyed cell membrane barrier function and depleted the sperm cells
of ATP. Indoor strain 64/93 was antagonistic towards
Corynebacterium renale. Two indoor Nocardiopsis
strains were xerotolerant, and all five utilized a wide range of
substrates. This combined with the production of toxic substances
suggests good survival and potential hazard to human health in
water-damaged indoor environments. Two new species, Nocardiopsis
exhalans sp. nov. (ES10.1T) and Nocardiopsis
umidischolae sp. nov. (66/93T), are proposed based on
morphology, chemotaxonomic and physiological characters, phylogenetic
analysis, and DNA-DNA reassociations.
*
Corresponding author. Mailing address: University of
Helsinki, Department of Applied Chemistry and Microbiology, Division of
Microbiology, P.O. Box 56 (Biocenter, Viikinkaari 9), FIN-00014 University of Helsinki, Finland. Phone: 358-9-19159305. Fax:
358-9-19159322. E-mail: joanna.peltola{at}helsinki.fi.
This article has been cited by other articles:
Copyright © 2009 by the American Society for Microbiology. For an alternate route to Journals.ASM.org, visit: http://intl-journals.asm.org | More Info»