Abstract:
:A facultatively anaerobic, alkaliphilic, spore-forming, Gram-positive-staining rod, designated Y1(T), was isolated under strictly anaerobic conditions from sediment of a soda lake in Jilin province, China. The strain was not dependent on Na(+) but was highly halotolerant and grew optimally in medium JY with 0.5 M Na(+) (0.06 M NaHCO(3) and 0.44 M NaCl). The optimum pH for growth was 9.0, with a range of pH 7.5-10.5. No growth occurred at pH 7.0 or 11.0. The strain was mesophilic, with a temperature range of 15-45 °C and optimum growth at 32 °C. Strain Y1(T) was able to use certain mono- and oligosaccharides. Soluble starch and casein were hydrolysed. The methyl red test, Voges-Proskauer test and tests for catalase and oxidase activities were negative. The predominant fatty acids were anteiso-C(15 : 0) and iso-C(15 : 0). Comparative 16S rRNA gene sequence analysis revealed 93.4-96.8 % sequence similarity to members of the genus Amphibacillus. The DNA G+C content was 37.7 mol% (T(m) method). The DNA-DNA relatedness of strain Y1(T) with respect to Amphibacillus tropicus DSM 13870(T) and Amphibacillus sediminis DSM 21624(T) was 48 and 37 %, respectively. On the basis of its phylogenetic position and the DNA-DNA relatedness data as well as its physiological and biochemical properties, strain Y1(T) represents a novel species of the genus Amphibacillus, for which the name Amphibacillus jilinensis sp. nov. is proposed. The type strain is Y1(T) (=CGMCC 1.5123(T) =JCM 16149(T)).
journal_name
Int J Syst Evol Microbiolauthors
Wu XY,Zheng G,Zhang WW,Xu XW,Wu M,Zhu XFdoi
10.1099/ijs.0.018259-0subject
Has Abstractpub_date
2010-11-01 00:00:00pages
2540-2543issue
Pt 11eissn
1466-5026issn
1466-5034journal_volume
60pub_type
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