Definition

Noun: 1. A type of bacteria: A xanthomonad is a rod-shaped bacterium belonging to the genus Xanthomonas or related genera within the family Xanthomonadaceae. 2. Characteristic pigment: These bacteria are known for producing yellow, non-water-soluble pigments called xanthomonadins. 3. Plant pathogen: Many xanthomonad species are pathogenic, meaning they cause diseases in a wide range of plants.

Usage Examples

• Noun:
  • The researcher identified the causative agent as a xanthomonad.
  • A common symptom of infection by this xanthomonad is black rot.
  • The yellow pigment is a key identifier for the xanthomonad.

Advanced Usage

• Scientific classification: The term is primarily used in microbiology and plant pathology. It often appears in technical discussions about bacterial taxonomy, plant diseases, and agricultural science.
  • The study focused on the genomic diversity of the xanthomonad responsible for citrus canker.

Variants and Related Words

• Xanthomonas (n): The primary genus name. When referring to a specific species, this term is used (e.g., ).
• Xanthomonadin (n): The specific type of yellow, brominated, water-insoluble pigment produced by these bacteria.

Synonyms

• Plant-pathogenic bacterium (general descriptive term)
• Xanthomonas bacterium (more specific taxonomic term)

Notes on Meaning

• The term is highly specific to scientific contexts. It is not used in everyday language.
• Its core meaning combines three elements: bacterial form, yellow pigment production, and association with plant disease.

Noun

1. bacteria producing yellow non-water-soluble pigments; some pathogenic for plants