Chitinivorax tropicus gen. nov., sp. nov., a chitinolytic bacterium isolated from a freshwater lake.
Int J Syst Evol Microbiol
; 62(Pt 5): 1086-1091, 2012 May.
Article
em En
| MEDLINE
| ID: mdl-21705448
ABSTRACT
A facultatively anaerobic, chitinolytic bacterium, strain KL-9(T), was isolated from a freshwater lake in Taiwan and characterized by using a polyphasic taxonomic approach. Cells of strain KL-9(T) were gram-negative, rod-shaped, motile by means of a single polar flagellum and non-spore-forming. Growth occurred at 15-40 °C (optimum, 30-37 °C), at pH 7.0-9.0 (optimum, pH 8.0) and with 0-1.0â% NaCl (optimum, 0â%). The predominant fatty acids were summed feature 3 (comprising C(16ââ1)ω7c and/or C(16ââ1)ω6c) and C(16ââ0). The major isoprenoid quinone was Q-8. The DNA G+C content of strain KL-9(T) was 64.6 mol%. The polar lipid profile consisted of a mixture of phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol, phosphatidyldimethylethanolamine and several uncharacterized phospholipids and aminolipids. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain KL-9(T) formed a distinct lineage with respect to closely related genera within the class Betaproteobacteria, being most closely related to members of the genera Leeia, Chitinimonas, Silvimonas and Andreprevotia. Levels of 16S rRNA gene sequence similarity with respect to the type strains of type species of these genera were below 91â%. On the basis of genotypic and phenotypic data, strain KL-9(T) is thus considered to represent a novel species of a new genus within the class Betaproteobacteria, for which the name Chitinivorax tropicus gen. nov., sp. nov. is proposed. The type strain of Chitinivorax tropicus is KL-9(T) (â=âBCRC 80168(T)â=âLMG 25530(T)).
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Base de dados:
MEDLINE
Assunto principal:
Betaproteobacteria
/
Água Doce
País como assunto:
Asia
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article