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- Title
Shewanella shenzhenensis sp. nov., a novel Fe(III)-reducing bacterium with abundant possible cytochrome genes, isolated from mangrove sediment.
- Authors
Zhang, Xueying; Yang, Guiqin; Yao, Sijie; Zhuang, Li
- Abstract
A facultative anaerobic bacterium, designated as A25T, was isolated from a mangrove sediment sample collected in Shenzhen, China. Cells of strain A25T were found to be Gram-staining negative, rod-shaped, flagella-harboring, and oxidase- and catalase-positive. The isolate was able to grow at 4–40 °C (optimum 28 °C) and pH 5.0–9.0 (optimum pH 6.0), and in 0–10% NaCl concentration (w/v) (optimum 1%). Strain A25T was capable of reducing Fe(III) citrate under anaerobic conditions. The major fatty acids of this strain was C16:1ω7c/C16:1ω6c (summed feature 3), C17:1ω8c and iso-C15:0. Results of phylogenetic analyses based on 16S rRNA gene sequences indicated that strain A25T is affiliated with the genus Shewanella, showing the highest similarity to Shewanella seohaensis S7-3T (98.4% similarity). The average nucleotide identity and digital DNA-DNA hybridization values between the genomes of strain A25T and its closely related strains were ≤ 79.0% and ≤ 22.8%, respectively. Based on its phenotypic, phylogenetic properties and physiological and biochemical characteristics, strain A25T (= JCM 34900T = GDMCC 1.2731T) was designated as the type strain of a novel species of the genus Shewanella, for which the name Shewanella shenzhenensis sp. nov. was proposed.
- Subjects
SHENZHEN (Guangdong Sheng, China : East); MANGROVE plants; SHEWANELLA; NUCLEIC acid hybridization; ANAEROBIC bacteria; SEDIMENT sampling; FATTY acids; CATALASE
- Publication
Antonie van Leeuwenhoek, 2022, Vol 115, Issue 10, p1245
- ISSN
0003-6072
- Publication type
Article
- DOI
10.1007/s10482-022-01763-3