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Spiroplasma leucomae sp. nov., isolated in Poland from white satin moth (Leucoma salicis L.) larvae

¹ Department of Biological Sciences, Towson University, Towson, MD 21252, USA
² Department of Biocontrol and Quarantine, Institute of Plant Protection, Poznan, Poland

Correspondence
Gail E. Gasparich
ggasparich{at}towson.edu

Spiroplasma sp. strain SMA^T, isolated in Poland from white satin moth larvae, Leucoma salicis L. (Lepidoptera: Lymantriidae), was serologically distinct from other Spiroplasma species, groups or subgroups. Dark-field microscopy of the cells revealed the classical helical shape and subsequent transmission electron microscopy revealed cells surrounded by only a single cell membrane (lacking a cell wall). Growth of strain SMA^T occurred in M1D medium at 30 °C. Strain SMA^T catabolized both glucose and arginine, but did not hydrolyse urea. The G+C content of the DNA was 24±1 mol% as determined by melting temperature analysis. Serological analysis revealed a very weak cross-reactivity (positive reaction only up to a 1 : 80 dilution) with two Spiroplasma strains, 277F (Spiroplasma sp. group I-4) and LB-12 (Spiroplasma sp. group I-5). Strain SMA^T (=ATCC BAA-521^T=NBRC 100392^T) is designated the type strain of a novel species, Spiroplasma leucomae sp. nov. (class Mollicutes: order Entomoplasmatales: family Spiroplasmataceae).

Published online ahead of print on 22 July 2005 as DOI 10.1099/ijs.0.63685-0.

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain SMA^T is DQ101278.

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