Name: verrucomicrobiota cell structure and traits
Uploaded: 2025-06-05T06:42:28.000Z
Duration: 1 min 26 s
Channel: JoVE

The phylum Verrucomicrobiota is classified into four orders, with most species classified in the order Verrucomicrobiales.Species in this phylum are obligate or facultatively aerobic bacteria widely distributed across various environments, including freshwater, marine habitats, forest soils, and agricultural lands.Verrucomicrobiota species contribute to carbon cycling. Many species ferment sugars, while aerobic methanotrophs like the genus Methylacidiphilum oxidize methane.Interestingly, species in Verrucomicrobiota possess membrane-bound cytoplasmic extensions called prosthecae. These appendages are supported by peptidoglycan in their cell walls.The genera Verrucomicrobium and Prosthecobacter are notable for producing multiple prosthecae on each cell.They undergo symmetrical cell division, resulting in both mother and daughter cells possessing prosthecae at the time of division.Prosthecobacter species have two genes that exhibit significant homology to the genes encoding tubulin in eukaryotic cells. But their function remains unclear, as no eukaryotic-like cytoskeleton has been observed in these bacteria.

bacterial phylum verrucomicrobiota

Bacterial Phylum Verrucomicrobiota

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, including freshwater, marine habitats, forest soils, and agricultural lands.Like the Planctomycetes, Verrucomicrobiota possess membrane-bound intracellular structures. However, a distinctive feature of Verrucomicrobiota is the presence of cytoplasmic extensions called prosthecae. These appendages are supported by peptidoglycan in their cell walls, distinguishing them from Planctomycetes.The genera Verrucomicrobium and Prosthecobacter are notable for producing multiple prosthecae on each cell. In contrast to Caulobacter, which develops a single prostheca and releases flagellated swarmer cells that lack prosthecae, Verrucomicrobium and Prosthecobacter undergo symmetrical cell division, resulting in both mother and daughter cells possessing prosthecae at the time of division. The name Verrucomicrobium is derived from Greek, meaning "warty," aptly describing the appearance of Verrucomicrobium spinosum, with its multiple protruding prosthecae.A remarkable characteristic of Prosthecobacter species is the presence of two genes that exhibit strong similarity to the genes encoding tubulin in eukaryotic cells. Tubulin is the primary protein forming the eukaryotic cytoskeleton. While the bacterial cell division protein FtsZ is also a tubulin homolog, the tubulin-like proteins in Prosthecobacter show greater structural resemblance to eukaryotic tubulin. Despite this similarity, the function of these proteins in Prosthecobacter remains unclear, as no eukaryotic-like cytoskeleton has been observed in these bacteria.

The phylum Verrucomicrobiota comprises at least four characterized orders, with most species classified within the order Verrucomicrobiotales. Members of ...

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Microbial Diversity

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verrucomicrobiota cell structure and traits

Verrucomicrobiota are a bacterial phylum with several recognized orders, and most species belong to Verrucomicrobiotales. Many members are aerobic or facultatively aerobic, which means they can use oxygen but may also grow without it. They can also ferment sugars. One exception is the genus Methylacidiphilum, which contains aerobic methanotrophs, bacteria that use methane and oxygen.

These bacteria live in many different places. They are found in freshwater, marine habitats, forest soils, and agricultural land. Some Verrucomicrobiota also form symbiotic relationships with protists, which are single-celled eukaryotes.

Verrucomicrobiota have membrane-bound internal structures, similar to Planctomycetes. They also have cytoplasmic extensions called prosthecae. These appendages are supported by peptidoglycan in the cell wall, which helps distinguish them from Planctomycetes. The genera Verrucomicrobium and Prosthecobacter are known for having multiple prosthecae on each cell.

Their cell division is also unusual. Unlike Caulobacter, which forms a single prostheca and releases flagellated swarmer cells without prosthecae, Verrucomicrobium and Prosthecobacter divide symmetrically. This means both the mother cell and the daughter cell have prosthecae at the time of division. The name Verrucomicrobium comes from a Greek word meaning &quot;warty,&quot; which matches the look of Verrucomicrobium spinosum and its many protruding prosthecae.

Prosthecobacter species are especially notable because they carry two genes that are very similar to genes for eukaryotic tubulin. Tubulin is the main protein that forms the eukaryotic cytoskeleton. Bacteria also have FtsZ, another tubulin homolog involved in cell division. However, the Prosthecobacter proteins are even more similar in structure to eukaryotic tubulin, and their function is still unclear. No eukaryotic-like cytoskeleton has been seen in these bacteria.

Verrucomicrobiota Cell Structure and Traits

verrucomicrobiota-cell-structure-and-traits

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Verrucomicrobiota are a bacterial phylum with several recognized orders, and most species belong to Verrucomicrobiotales. Many members are aerobic or facultatively aerobic, which means they can use oxygen but may also grow without it. They can also ferment sugars. One exception is the genus Methylacidiphilum, which contains aerobic methanotrophs, bacteria that use methane and oxygen. These bacteria live in many different places. They are found in freshwater, marine habitats, forest soils, and...

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key terms and concepts

Explore Verrucomicrobiota cell features, prosthecae, habitat diversity, symbiosis with protists, and the unusual tubulin-like genes in Prosthecobacter.

Verrucomicrobiota Cell Structure and Traits | JoVE K12

JoVE Core Microbiology provides an engaging introduction to the microbial world and its influence on health, industry, and the environment. This comprehensive collection covers key concepts such as microbial structure, metabolism, genetics, and ecology. It introduces essential laboratory techniques and microscopy methods through visually engaging animations. Corresponding scientist-in-action videos bridge classroom concepts with real-world research and applications.

microbiology

Verrucomicrobiota Cell Structure and Traits

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