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The phylum Bacteroidota includes over 700 species classified into four primary orders: Bacteroidales, Cytophagales, Flavobacteriales, and Sphingobacteriales. These gram-negative, non-sporulating rods exhibit saccharolytic capabilities and can be aerobic or fermentative, encompassing obligate aerobes, facultative aerobes, and obligate anaerobes. Many species display gliding motility, though some are nonmotile or use flagella. The genus Bacteroides is well-studied due to its significant role in...
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Domain Bacteria includes some unique hyperthermophilic species. They exhibit remarkable adaptations that enable survival in extreme environments.Thermotoga species are rod-shaped, gram-negative, non-sporulating hyperthermophiles that form a sheath-like envelope called a toga. They ferment sugars or starch, producing lactate, acetate, CO₂, and H₂, and can also grow via anaerobic respiration using H₂ and ferric iron. Found in hot springs and hydrothermal vents, over 20% of their...
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The phylum Verrucomicrobiota comprises at least four characterized orders, with most species classified within the order Verrucomicrobiotales. Members of this phylum are either aerobic or facultatively aerobic, with the ability to ferment sugars. A notable exception is the genus Methylacidiphilum, which consists of aerobic methanotrophs. Additionally, some Verrucomicrobiota establish symbiotic relationships with protists. These bacteria are widely distributed across various environments,...
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Coryneform bacteria are gram-positive, aerobic, nonmotile rods that exhibit irregular, club-shaped, or V-shaped arrangements. Their V-shape results from snapping division, where the inner cell wall layer forms the cross-wall, while the outer layer remains intact until it ruptures on one side, causing the daughter cells to bend away.The primary genera are Corynebacterium and Arthrobacter. Corynebacterium includes diverse species, ranging from saprophytes to pathogens like Corynebacterium...
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Anoxygenic phototrophic bacteria are a diverse group of microorganisms that perform photosynthesis without producing oxygen. They primarily include purple sulfur bacteria, purple nonsulfur bacteria, green sulfur bacteria, and green nonsulfur bacteria. These bacteria are classified into the Gammaproteobacteria, Alphaproteobacteria, Betaproteobacteria, Chlorobi, and Chloroflexi lineages, each with distinct physiological and ecological adaptations.Purple sulfur bacteria belong to the...
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Bacterial Phylum Spirochaetes

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Flavobacterium amniphilum sp. nov., isolated from a stream.

Shih-Yi Sheu1, Ching-Ling Su1, Soon-Wo Kwon2

  • 1Department of Marine Biotechnology, National Kaohsiung Marine University, No. 142, Hai-Chuan Rd. Nan-Tzu, Kaohsiung City 811, Taiwan, ROC.

International Journal of Systematic and Evolutionary Microbiology
|October 27, 2017
PubMed
Summary

A novel bacterium, Flavobacterium amniphilum sp. nov. strain KYPY10T, was discovered in Taiwan. This strictly aerobic, Gram-negative bacterium expands the known diversity within the Flavobacterium genus.

Keywords:
BacteroidetesFlavobacteriaceaeFlavobacterium amniphilumnew taxapolyphasic taxonomystream

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Area of Science:

  • Microbiology
  • Bacteriology
  • Taxonomy

Background:

  • The genus Flavobacterium comprises diverse bacteria found in various environments.
  • Accurate taxonomic classification is crucial for understanding microbial diversity and ecological roles.

Purpose of the Study:

  • To characterize a novel bacterial isolate, strain KYPY10T, from a Taiwanese stream.
  • To determine the phylogenetic and phenotypic properties of strain KYPY10T.
  • To propose a new species within the genus Flavobacterium.

Main Methods:

  • Polyphasic taxonomic approach including 16S rRNA gene sequencing.
  • Analysis of phenotypic characteristics (morphology, growth conditions, fatty acid profiles, quinones, polar lipids, polyamines).
  • DNA-DNA hybridization for genetic relatedness assessment.

Main Results:

  • Strain KYPY10T is a Gram-negative, aerobic, motile, encapsulated rod forming yellow colonies.
  • Phylogenetic analysis places strain KYPY10T within the genus Flavobacterium, closely related to F. brevivitae and F. vireti.
  • Distinct phenotypic features and low DNA-DNA relatedness (<70%) differentiate it from known species.
  • Genomic DNA G+C content is 41.0 mol%.

Conclusions:

  • Strain KYPY10T represents a novel species within the genus Flavobacterium.
  • The proposed name for this new species is Flavobacterium amniphilum sp. nov.
  • The type strain is KYPY10T (=BCRC 81006T=LMG 29727T=KCTC 52443T).