genus xanthomonas
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A scientist examines a petri dish containing a culture of the genus Xanthomonas.
Definition
Noun: 1. A genus of bacteria: A taxonomic category (genus) of Gram-negative bacteria. These bacteria are rod-shaped and motile, possessing polar flagella. A key distinguishing characteristic is their production of a yellow, non-water-soluble pigment.
Usage Notes
- The word is a scientific, taxonomic term used primarily in microbiology, plant pathology, and related biological sciences.
- It is always treated as a singular noun, even though it refers to a group containing many species (e.g., "The genus Xanthomonas is known for...").
- The name is often italicized in formal scientific writing, as is standard for genus and species names.
Examples of Usage
- Scientific Context:
- The plant disease was confirmed to be caused by a pathogen from the genus Xanthomonas.
- Researchers are studying the genome of Xanthomonas to understand its virulence mechanisms.
- Several species within genus Xanthomonas are of major economic importance due to the crop diseases they cause.
Advanced Usage
- The genus name can be used attributively (like an adjective) to describe related nouns.
- Example: The Xanthomonas infection spread rapidly through the field.
Variants and Related Words
- Xanthomonad (n): A common name for any bacterium belonging to the genus or the family .
- Example: The isolated xanthomonad was tested for antibiotic resistance.
- Xanthomonadal (adj): Relating to or characteristic of the genus .
- Example: The xanthomonadal pigment is a key diagnostic feature.
Synonyms
- None precise: In formal taxonomy, genus names are unique identifiers and do not have true synonyms. In general descriptive language, one might use phrases like:
- "yellow-pigmented bacteria" (though this is less specific, as other genera also produce yellow pigments).
Different Meanings
- This term has a single, specific meaning in scientific nomenclature. It does not have common, everyday definitions outside of microbiology.
Related Phrases / Contexts
- Xanthomonas campestris: A well-known species within the genus, causing black rot in cruciferous vegetables.
- Xanthomonas axonopodis: A species complex containing many pathogens affecting diverse crops.
- Bacterial spot/blight: Common names for diseases caused by various species.
A scientist examines a petri dish containing a culture of the genus Xanthomonas.
Noun
- a genus of bacteria similar to Pseudomonas but producing a yellow pigment that is not soluble in water