Planococcus (bacterium)

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Planococcus
Scientific classification
Domain:
Bacteria
Phylum:
Bacillota
Class:
Bacilli
Order:
Caryophanales
Family:
Caryophanaceae
Genus:
PlanococcusMigula 1894
Species

Planococcus is a genus of Gram-Positive or Gram-variable, cocci or short rod-shaped bacteria in the family Caryophanaceae from the order Caryophanales. [1] The type species of this genus is Planococcus citreus. [2]

Contents

Some members of Planococcus are previously species belonging to Planomicrobium. Instead of branching with species from Planomicrobum, these species formed a monophyletic branch with members of Planococcus in various phylogenetic trees constructed based on conserved genome sequences, indicating their phylogenetic relatedness. [1] The family Caryophanaceae encompassed many branching anomalies such as this one, partially due to the reliance on 16S rRNA sequences as a method for classification, which is known to have low resolution power and give differing results depending on the algorithm used. [3] In 2020, a comparative genomic study emended the family, resulting in the establishment of three new genera as well as the amendment of a number of genera including Planococcus. [1]

The name Planococcus is derived from the Greek noun planes, translating into "a wanderer" and the Latin term coccus. Together, Planococcus can be translated as a motile coccus. [1]

Biochemical Characteristics and Molecular Signatures [1]

Cells exhibit Gram-positive or Gram-variable staining and they are cocci or short rods and generally motile.

Genomic analyses identified five conserved signature indels (CSIs) that are uniquely present in members of this genus in the following proteins: penicillin-binding protein 2, hypothetical protein, NADPH-dependent 7-cyano-7-deazaguanine reductase QueF, ACT domain-containing protein, and methylmalonyl-CoA mutase. [1] These molecular signatures provide a reliable method for differentiating Planococcus species from other genera within the family Caryophanaceae and all other bacteria.

Taxonomy

Planococcus, as of 2021, contains 24 species with validly published names. [2] This genus was identified as a monophyletic clade and phylogenetically unrelated to other species in the family Caryophanaceae in studies examining the taxonomic relationships within the family. [1]

Related Research Articles

The Caryophanaceae is a family of Gram-positive bacteria. In 2020, the now defunct family Planococcaceae was merged into Caryophanaceae to rectify a nomenclature anomaly. The type genus of this family is Caryophanon.

Sporosarcina is a genus of bacteria.

Ureibacillus is a genus of gram-negative bacteria within the largely gram-positive Bacillota. Ureibacilli are motile and form spherical endospores. The type species of the genus is Ureibacillus thermosphaericus.

<span class="mw-page-title-main">Yersiniaceae</span> Family of bacteria

The Yersiniaceae are a family of Gram-negative bacteria that includes some familiar pathogens. For example, the type genus Yersinia includes Yersinia pestis, the causative agent of plague. This family is a member of the order Enterobacterales in the class Gammaproteobacteria of the phylum Pseudomonadota.

Solibacillus is a genus of Gram positive, rod shaped, spore-forming bacteria.

Metabacillus is a genus of rod-shaped bacteria exhibiting Gram-positive or Gram-variable staining in the family Bacillaceae within the order Bacillales. The type species for this genus is Metabacillus fastidiosus.

Neobacillus is a genus of rod-shaped bacteria that show Gram-positive or Gram-variable staining. This genus belongs under the family Bacillaceae within the order Bacillales. The type species of Neobacillus is Neobacillus niacini.

Cytobacillus is a genus of rod-shaped bacteria that stain either Gram-positive or Gram-variable in the family Bacillaceae within the order Bacillales. The type species for this genus is Cytobacillus firmus.

Peribacillus is a genus of rod-shaped bacteria that exhibits Gram-positive or Gram-variable staining that belongs in the family Bacillaceae within the order Bacillales. The type species for this genus is Peribacillus simplex.

Mesobacillus is a genus of gram-positive or gram-variable, rod-shaped bacteria in the family Bacillaceae within the order Bacillales. The type species for this genus is Mesobacillus jeotgali.

Alteribacter is a genus of Gram-positive or Gram-variable, rod-shaped bacteria in the family Bacillaceae within the order Bacillales. The type species for this genus is Alteribacter auranticus.

Heyndrickxia is a genus of gram-positive rod-shaped bacteria in the family Bacillaceae within the order Bacillales. The type species for this genus is Heyndrickxia oleronia.

Lederbergia is a genus of gram-positive or Gram-variable, rod-shaped bacteria in the family Bacillaceae within the order Bacillales. The type species for this genus is Lederbergia galactosidilyticus.

Alkalicoccus is a genus of Gram-Positive rod-shaped bacteria in the family Bacillaceae from the order Bacillales. The type species of this genus is Alkalicoccus saliphilus.

Metasolibacillus is a genus of Gram-Positive rod-shaped bacteria in the family Caryophanaceae from the order Caryophanales. The type species of this genus is Metasolibacillus meyeri.

Metalysinibacillus is a genus of Gram-Positive rod-shaped bacteria in the family Caryophanaceae from the order Caryophanales. The type species of this genus is Metalysinibacillus jejuensis.

Metaplanococcus is a genus of Gram-Positive or Gram-variable, cocci or short rod-shaped bacteria in the family Caryophanaceae from the order Caryophanales. The type species of this genus is Metaplanococcus flavidus.

The Eggerthellaceae are a family of Gram-positive, rod- or coccus-shaped Actinomycetota. It is the sole family within the order Eggerthellales.

Natrialbales is an order of halophilic, chemoorganotrophic archaea within the class Haloarchaea. The type genus of this order is Natrialba.

Haloferacales is an order of halophilic, chemoorganotrophic or heterotrophic archaea within the class Haloarchaea. The type genus of this order is Haloferax.

References

  1. 1 2 3 4 5 6 7 Gupta, Radhey S.; Patel, Sudip (2020-01-14). "Robust Demarcation of the Family Caryophanaceae (Planococcaceae) and Its Different Genera Including Three Novel Genera Based on Phylogenomics and Highly Specific Molecular Signatures". Frontiers in Microbiology. 10: 2821. doi: 10.3389/fmicb.2019.02821 . ISSN   1664-302X. PMC   6971209 . PMID   32010063.
  2. 1 2 "Genus: Planococcus". lpsn.dsmz.de. Retrieved 2021-06-05.
  3. ↑ Ludwig, Wolfgang; Schleifer, Karl‐Heinz; Whitman, William B. (2015-09-14). "Planococcaceae". Bergey's Manual of Systematics of Archaea and Bacteria: 1. doi:10.1002/9781118960608.fbm00116. ISBN   9781118960608.
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