Journal article

Isolation of toxigenic Nocardiopsis strains from indoor environments and description of two new Nocardiopsis Species, N. exhalans sp. nov. and N. umidischolae sp. nov.


Authors listPeltola, JS; Andersson, MA; Kämpfer, P; Auling, G; Kroppenstedt, RM; Busse, HJ; Salkinoja-Salonen, MS; Rainey, FA

Publication year2001

Pages4293-4304

JournalApplied and Environmental Microbiology

Volume number67

Issue number9

ISSN0099-2240

eISSN1098-5336

Open access statusGreen

DOI Linkhttps://doi.org/10.1128/AEM.67.9.4293-4304.2001

PublisherAmerican Society for Microbiology


Abstract
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 microg of crude extract (dry weight) x ml(-1). N. prasina, N. lucentensis, N. tropica, and strain ES10.1 caused cessation of motility by dissipating the mitochondrial membrane potential, Deltapsi, 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.



Citation Styles

Harvard Citation stylePeltola, J., Andersson, M., Kämpfer, P., Auling, G., Kroppenstedt, R., Busse, H., et al. (2001) Isolation of toxigenic Nocardiopsis strains from indoor environments and description of two new Nocardiopsis Species, N. exhalans sp. nov. and N. umidischolae sp. nov., Applied and Environmental Microbiology, 67(9), pp. 4293-4304. https://doi.org/10.1128/AEM.67.9.4293-4304.2001

APA Citation stylePeltola, J., Andersson, M., Kämpfer, P., Auling, G., Kroppenstedt, R., Busse, H., Salkinoja-Salonen, M., & Rainey, F. (2001). Isolation of toxigenic Nocardiopsis strains from indoor environments and description of two new Nocardiopsis Species, N. exhalans sp. nov. and N. umidischolae sp. nov.. Applied and Environmental Microbiology. 67(9), 4293-4304. https://doi.org/10.1128/AEM.67.9.4293-4304.2001



SDG Areas


Last updated on 2025-10-06 at 09:25