sulfur bacteria: meaning, definition, pronunciation and examples
C2Technical / Scientific
Quick answer
What does “sulfur bacteria” mean?
A type of bacteria, typically anaerobic, that oxidizes hydrogen sulfide or other reduced sulfur compounds to obtain energy, often forming deposits of elemental sulfur.
Audio
Pronunciation
Definition
Meaning and Definition
A type of bacteria, typically anaerobic, that oxidizes hydrogen sulfide or other reduced sulfur compounds to obtain energy, often forming deposits of elemental sulfur.
A general term for prokaryotes involved in the sulfur cycle, including purple sulfur bacteria, green sulfur bacteria, and colorless sulfur-oxidizing bacteria (e.g., Thiobacillus). They are studied in geomicrobiology for their role in acidic mine drainage, nutrient cycling, and potential astrobiological significance.
Dialectal Variation
British vs American Usage
Differences
Spelling preference is the main difference. British texts may use 'sulphur bacteria', particularly in older or non-technical publications, but 'sulfur' is increasingly the scientific standard globally. Vocabulary in examples may differ (e.g., 'anaerobic' vs. 'anaerobically').
Connotations
Identical scientific meaning. No additional cultural connotations.
Frequency
More frequent in academic and technical writing. Extremely rare in general discourse.
Grammar
How to Use “sulfur bacteria” in a Sentence
Sulfur bacteria + verb (oxidise, produce, form, thrive)Sulfur bacteria + prepositional phrase (in hot springs, on sulfides)Vocabulary
Collocations
Examples
Examples of “sulfur bacteria” in a Sentence
verb
British English
- The consortium was found to sulphur-oxidise anaerobically.
- These microbes preferentially sulphidise in layered mats.
American English
- The bacteria can sulfur-oxidize using light.
- The process sulfurates the surrounding medium.
adverb
British English
- The reaction proceeded sulfur-oxidisingly.
- They grow predominantly sulphurolytically.
American English
- The reaction proceeded sulfur-oxidizingly.
- They grow predominantly sulfurlytically.
adjective
British English
- The sulphur-bacterial mat was sampled.
- A sulphurous, bacterial smell arose.
American English
- The sulfur-bacterial metabolism is fascinating.
- A sulfurous, bacterial bloom was observed.
Usage
Meaning in Context
Business
Rare. Potentially in contexts of environmental remediation, biotechnology, or mining.
Academic
Common in microbiology, geomicrobiology, and environmental science textbooks and papers on biogeochemical cycles.
Everyday
Virtually never used.
Technical
Standard term in scientific reports on wastewater treatment, mine tailings, and astrobiology.
Vocabulary
Synonyms of “sulfur bacteria”
Strong
Neutral
Weak
Vocabulary
Antonyms of “sulfur bacteria”
Watch out
Common Mistakes When Using “sulfur bacteria”
- Using 'sulfur' as an adjective in other positions (e.g., 'bacteria of sulfur').
- Confusing with sulfate-reducing bacteria (which do the opposite).
- Spelling as 'sulphur bacteria' in strict modern scientific writing.
FAQ
Frequently Asked Questions
Generally not directly pathogenic, but their metabolic activities can produce sulfuric acid, leading to corrosive environments (e.g., concrete corrosion, acid mine drainage) which pose indirect risks.
They are different phylogenetic groups. Purple sulfur bacteria (e.g., Chromatiaceae) use hydrogen sulfide as an electron donor and store sulfur granules inside their cells. Green sulfur bacteria (Chlorobiaceae) are strictly anaerobic, often store sulfur externally, and have different light-harvesting structures (chlorosomes).
In anoxic, sulfidic environments: stratified lakes (like the Black Sea), hot springs, salt marshes, marine sediments, and in the 'phototrophic zone' of microbial mats where light penetrates but oxygen is absent.
The International Union of Pure and Applied Chemistry (IUPAC) adopted 'sulfur' in 1990, and major scientific bodies followed suit to standardize nomenclature, moving away from the traditional British 'sulphur'.
A type of bacteria, typically anaerobic, that oxidizes hydrogen sulfide or other reduced sulfur compounds to obtain energy, often forming deposits of elemental sulfur.
Sulfur bacteria is usually technical / scientific in register.
Sulfur bacteria: in British English it is pronounced /ˈsʌl.fə bækˈtɪə.ri.ə/, and in American English it is pronounced /ˈsʌl.fɚ bækˈtɪr.i.ə/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think of the yellow element 'sulfur' and the 'bacteria' that eat its compounds, often living where things smell like rotten eggs (hydrogen sulfide).
Conceptual Metaphor
Sulfur bacteria as 'chemical miners' or 'underground recyclers'.
Practice
Quiz
What is the primary energy source for typical sulfur bacteria?