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Int J Syst Evol Microbiol 58 (2008), 2774-2778; DOI  10.1099/ijs.0.65768-0
© 2008 International Union of Microbiological Societies

Streptomyces lunalinharesii sp. nov., a chitinolytic streptomycete isolated from cerrado soil in Brazil

Rodrigo Fonseca de Souza1, Rosalie Reed Rodrigues Coelho1, Andrew Macrae1, Rosangela Maria Araújo Soares1, Débora da Costa Morato Nery1, Luzia Teixeira de Azevedo Soares Semêdo1,2, Celuta Sales Alviano1 and Rosana Canuto Gomes1,2

1 Instituto de Microbiologia Prof. Paulo de Góes, Universidade do Brasil, UFRJ, CCS, Bloco I, Ilha do Fundão, Rio de Janeiro 21941-590, Brazil
2 Centro de Ciências e da Saúde, Universidade Severino Sombra, USS, Av. Expedicionário Oswaldo de Almeida Ramos -280, Centro, Vassouras, Rio de Janeiro 27700-000, Brazil

Correspondence
Rodrigo Fonseca de Souza
rsouza.rlk{at}terra.com.br

A novel chitinolytic actinomycete isolated from a Brazilian cerrado soil, designated strain RCQ1071T, was assigned to the genus Streptomyces on the basis of chemical and morphological characteristics. The almost-complete nucleotide sequence of the 16S rRNA gene of strain RCQ1071T was determined and also placed this strain in the genus Streptomyces. Phylogenetic analyses of 16S rRNA gene sequences showed that strain RCQ1071T formed a long branch in a group related to Streptomyces albulus, sharing approximately 98 % sequence similarity. Levels of DNA–DNA relatedness between strain RCQ1071T and members of this group, namely S. albulus DSM 40492T, Streptomyces noursei DSM 40635T and Streptomyces yunnanensis DSM 41793T, were 38.3, 27.8 and 46 %, respectively, strongly indicating that strain RCQ1071T was not a member of any of these species. The relatively long branch length within a stable clade together with the phenotypic data strongly supported that strain RCQ1071T represented a novel species. Based on the combination of physiological, phylogenetic and genomic data, strain RCQ1071T is suggested to represent a novel species of the genus Streptomyces, for which the name Streptomyces lunalinharesii sp. nov. is proposed. The type strain is RCQ1071T (=ATCC BAA-1231T =CIP 108852T =DSM 41876T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain RCQ1071T is DQ094838.

A table detailing differential phenotypic properties between strain RCQ1071T and chitinolytic Streptomyces species is available as supplementary material with the online version of this paper.






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