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Spirochetes, unique bacteria in the phylum Spirochaetes, are gram-negative, motile, tightly coiled, slender, and flexible. They inhabit aquatic sediments and animals, with some causing diseases like syphilis. Spirochetes are classified into eight genera based on habitat, pathogenicity, phylogeny, and characteristics.Their distinctive motility arises from endoflagella, located within the cell’s periplasm. These endoflagella anchor at the cell poles and extend along the cell length, encased by a...
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  3. Pseudohoeflea Coraliihabitans Sp. Nov., A Poly-β-hydroxybutyrate-producing, Halotolerant Bacterium Isolated From Coral Sediment In The Dapeng Peninsula (guangdong, China).
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  3. Pseudohoeflea Coraliihabitans Sp. Nov., A Poly-β-hydroxybutyrate-producing, Halotolerant Bacterium Isolated From Coral Sediment In The Dapeng Peninsula (guangdong, China).

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Pseudohoeflea coraliihabitans sp. nov., a poly-β-hydroxybutyrate-producing, halotolerant bacterium isolated from

Sheng-Yang Yu1, Xiao-Juan Lu1, Meng-Jun Zhang1

  • 1Marine Institute for Bioresources and Environment, Peking University Shenzhen Institute, Shenzhen, 518057, PR China.

International Journal of Systematic and Evolutionary Microbiology
|September 13, 2024

View abstract on PubMed

Summary
This summary is machine-generated.
Keywords:
Pseudohoefleacoral sedimentdraft genome sequencinghalotolerantpoly-β-hydroxybutyrate

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A novel bacterium, Pseudohoeflea coraliihabitans, was discovered in marine sediment. This halotolerant, poly-β-hydroxyalkanoate-producing organism represents a new species within the Pseudohoeflea genus.

Area of Science:

  • Microbiology
  • Bacteriology
  • Marine Biology

Background:

  • Marine environments harbor diverse microbial communities.
  • Sediments near coral reefs are unique ecosystems for bacterial isolation.
  • Poly-β-hydroxyalkanoates are important biopolymers produced by bacteria.

Purpose of the Study:

  • To isolate and characterize a novel bacterial species from marine sediment.
  • To determine the phylogenetic and genomic relationship of the isolate to known species.
  • To propose a new species within the genus Pseudohoeflea.

Main Methods:

  • Isolation of bacteria from offshore coral reef sediment.
  • Phylogenetic analysis using 16S rRNA, housekeeping, and whole-genome sequences.
  • Genomic analysis including Average Nucleotide Identity (ANI) and Average Amino Acid Identity (AAI).
  • Phenotypic characterization including growth conditions, carbon utilization, and chemotaxonomic analysis (fatty acids, polar lipids, respiratory quinone).

    • Main Results:

    • A novel Gram-negative, aerobic, motile bacterium, strain DP4N28-3T, was isolated.
    • Phylogenetic analysis showed highest similarity (98.1%) to Pseudohoeflea suaedae, but genomic data supported a new species.
    • The isolate exhibited halotolerance, produced poly-β-hydroxybutyrate, and had distinct phenotypic characteristics.
    • Chemotaxonomic analysis revealed specific fatty acid profiles, polar lipids, and Q-10 as the respiratory quinone.

    Conclusions:

    • Strain DP4N28-3T represents a novel species, Pseudohoeflea coraliihabitans sp. nov.
    • The study expands the known diversity of the Pseudohoeflea genus.
    • This research contributes to understanding microbial life in coral reef-associated marine sediments.