Zoogloea caeni sp nov., a floc-forming bacterium isolated from activated sludge
- Authors
- Shao, Yongqi; Chung, Bok Sil; Lee, Seung Sik; Park, Woojun; Lee, Sang-Suk; Jeon, Che Ok
- Issue Date
- 3월-2009
- Publisher
- MICROBIOLOGY SOC
- Citation
- INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY, v.59, pp.526 - 530
- Indexed
- SCIE
SCOPUS
- Journal Title
- INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
- Volume
- 59
- Start Page
- 526
- End Page
- 530
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/120491
- DOI
- 10.1099/ijs.0.65670-0
- ISSN
- 1466-5026
- Abstract
- Two floc-forming, nitrogen-fixing bacteria, strains EMB43(T) and EMB61, obtained from activated sludge of a domestic wastewater treatment plant in Korea, were characterized. The two strains were very closely related, sharing 99.7% 16S rRNA gene sequence similarity and showing a level of DNA-DNA relatedness of 93%, which suggests that they represent members of a single species. Phylogenetic analysis based on 16S rRNA gene sequences showed that the two novel isolates formed a distinct phyletic lineage within the genus Zoogloea and were related most closely to Zoogloea resiniphila DhA-35(T) and Zoogloea oryzae A-7(T), with sequence similarities of 97.2%. Levels of DNA-DNA relatedness between strain EMB43(T) and Z resiniphila DhA-35(T) and Z oryzae A-7(T) were 12.8 and 7.4%, respectively. Cells of strains EMB43(T) and EMB61 were facultatively aerobic, rod-shaped, Gram-negative and motile by means of a polar flagellum. The strains grew at temperatures of 15-40 degrees C (optimum: 25-30 degrees C) and at pH 6.0-9.0 (optimum: pH 6.5-7.5). The predominant fatty acids were C-16:0, C-10:0 3-OH and summed feature 3 (C-16:1 omega 7c and/or iSO-C-15:0 2-OH), and the predominant polar lipid was phosphatidylethanolamine. The genomic DNA G+C content was 64.9-65.0 mol% and the major isoprenoid quinone was ubiquinone-8 (Q-8). On the basis of phenotypic, chemotaxonomic and molecular data, the isolates are considered to represent a novel species of the genus Zoogloea, for which the name Zoogloea caeni sp. nov. is proposed. The type strain is EMB43(T) (=KCTC; 22084(T) =DSM 19389(T)).
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Collections - College of Life Sciences and Biotechnology > Division of Environmental Science and Ecological Engineering > 1. Journal Articles
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