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Arthrobacter nitroguajacolicus sp. nov., a novel 4-nitroguaiacol-degrading actinobacterium

Ludmila Kotouková¹, Peter Schumann², Eva Durnová³, Cathrin Spröer², Ivo Sedláek⁴, Jií Nea⁵, Zbynk Zdráhal^6,7 and Miroslav Nmec¹

¹ Department of Microbiology, Faculty of Science, Masaryk University Brno, Tvrdého 14, 602 00 Brno, Czech Republic
² DSMZ – German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
³ Regional Institute of Public Health, Ostrava, Czech Republic
⁴ CCM – Czech Collection of Microorganisms, Masaryk University Brno, Czech Republic
⁵ Veterinary Research Institute, Brno, Czech Republic
⁶ Institute of Analytical Chemistry, Brno, Czech Republic
⁷ Laboratory of Functional Genomics and Proteomics, Faculty of Science, Masaryk University Brno, Czech Republic

Correspondence
Ludmila Kotouková
lida{at}sci.muni.cz

Three bacterial isolates from soil, capable of degradation or transformation of nitroaromatic compounds and displaying a rod–coccus growth cycle, were studied by a polyphasic approach. On the basis of 16S rRNA sequence analysis and of chemotaxonomic characteristics, such as type A3 peptidoglycan with an interpeptide bridge Ala–Thr–Ala, the major menaquinone MK-9(H₂) and fatty acid composition, the isolates were assigned to the genus Arthrobacter. DNA–DNA hybridization, riboprinting and phenotypic studies revealed that the three strains constitute a single species, distinct from phylogenetically neighbouring Arthrobacter aurescens and Arthrobacter ilicis. A novel species, Arthrobacter nitroguajacolicus sp. nov., with the type strain G2-1^T (=CCM 4924^T=DSM 15232^T) is proposed.

Published online ahead of print on 28 November 2003 as DOI 10.1099/ijs.0.02923-0.

The GenBank/EMBL/DDBJ accession number for the 16S rDNA sequence of strain G2-1^T is AJ512504.

Tables showing the differentiating physiological reactions and cellular fatty acid composition of Arthrobacter nitroguajacolicus sp. nov. strains are available as supplementary material in IJSEM Online.

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