1887

Abstract

Two novel siderophore-producing strains designated CC-CFT023 and CC-CFT034, isolated from a rusty iron plate, are characterized in this study. Cells of both strains were catalase- and oxidase-positive. Strain CC-CFT023 showed a high pairwise 16S rRNA gene sequence similarity to LMG 23375 (96.0 %), whereas, strain CC-CFT034 shared a maximum similarity to DSM 18598 (95.8 %). The predominant quinone system was ubiquinone (Q-10) and the DNA G+C contents of CC-CFT023 and CC-CFT034 were 69.5 mol% and 67.7 mol%, respectively. The major fatty acids of these strains were C, C, C cyclo ω8, C 2-OH and summed features 3 and 8, consisting of Cω7/Cω6 and Cω7/Cω6, respectively. Polar lipid profiles of both of these isolates include diphosphatidylglycerol (DPG), phosphatidylcholine (PC), phosphatidylethanolamine (PE), phosphatidylglycerol (PG) and most importantly sulfoquinovosyldiacylglycerol (SQDG), which is one of the typical molecular features reported to delineate the members of the genus from their closest relatives, species of the genus . Based on the phylogenetic, phenotypic and chemotaxonomic features, strains CC-CFT023 and CC-CFT034 represent two novel species within the genus , for which the names sp. nov. (type strain CC-CFT023 = BCRC 80439 = JCM 18444) and sp. nov. (type strain CC-CFT034 = BCRC 80440 = JCM 18445) are proposed.

Funding
This study was supported by the:
  • National Science Council, Council of Agriculture, Executive Yuan
  • Ministry of Education, Taiwan, R.O.C.
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2013-07-01
2024-11-04
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