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Int J Syst Evol Microbiol 57 (2007), 1561-1565; DOI  10.1099/ijs.0.64737-0
© 2007 International Union of Microbiological Societies

Brevundimonas aveniformis sp. nov., a stalked species isolated from activated sludge

Seung Hyun Ryu1, Minjeong Park1, Jung Ro Lee1, Pil-Yong Yun2 and Che Ok Jeon1

1 Division of Applied Life Science, EB-NCRC, PMBBRC, Gyeongsang National University, Jinju 660-701, Republic of Korea
2 Jeju Hi-Tech industry Development Institute, 4-8 Ara-1 dong, Jeju 690-121, Republic of Korea

Correspondence
Che Ok Jeon
cojeon{at}gnu.ac.kr

A Gram-negative, rod-like, stalk-producing bacterium, designated strain EMB102T, was isolated from activated sludge that performed enhanced biological phosphorus removal in a sequencing batch reactor. Cells without stalks were motile with single polar flagella, but cells that did produce stalks were non-motile and lacked polar flagella. Growth of strain EMB102T was observed at temperatures between 15 and 35 °C (optimum, 30 °C) and between pH 6.0 and 9.0 (optimum, pH 7.5–8.5). The predominant fatty acids of strain EMB102T were C18 : 1{omega}7c, C16 : 0 and C15 : 0. The predominant polar lipid was phosphatidylglycerol. The G+C content of the genomic DNA was 64.1 mol% and the major quinone was Q-10. Comparative 16S rRNA gene sequence analyses showed that strain EMB102T formed a distinct phyletic lineage within the genus Brevundimonas. The levels of 16S rRNA gene sequence similarity between the type strains of Brevundimonas species ranged from 95.8 to 97.5 %. DNA–DNA relatedness levels between the EMB102T and closely related Brevundimonas species were below 15.0 %. On the basis of chemotaxonomic data and molecular properties, strain EMB102T represents a novel species within the genus Brevundimonas, for which the name Brevundimonas aveniformis sp. nov. is proposed. The type strain is EMB102T (=KCTC 12609T=DSM 17977T).

Abbreviations: EBPR, enhanced biological phosphorus removal

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain EMB102T is DQ372984.

The cellular fatty acid compositions and substrate-assimilation data for strain EMB102T and some related Brevundimonas species are available in supplementary tables available with the online version of this paper.






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