Starvation effects on Escherichia coli and aquatic bacterial responses to nutrient addition and secondary warming stresses

S. Y. Wu, D. A. Klein

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

A gram negative polar flagellated rod, isolated from a Colorado mountain stream and considered to be an Aeromonas sp., a mixed aquatic microbial population, and a culture of E. coli were starved to determine their responses to the short term presence of nutrients and mild warming stress (49.5 C for 2 min) in relation to starvation time. At the beginning of the starvation period, the Aeromonas isolate was extremely sensitive to the secondary warming stress. This response was markedly diminished after a 3 week starvation period. The mixed aquatic microbial population showed a similar trend in becoming less sensitive to stress with increased starvation. E. coli, under similar conditions, became more sensitive to the secondary stress after exposure to glucose. Respiration measurements after glucose additions also indicated that E. coli responded in a different manner to starvation stress and glucose presence than the Aeromonas isolate. The increased sensitivity of E. coli to secondary stress and short term nutrient availability after starvation may contribute to the exclusion of this organism for aquatic environments.

Original languageEnglish
Pages (from-to)216-220
Number of pages5
JournalApplied and Environmental Microbiology
Volume31
Issue number2
Publication statusPublished - Dec 1 1976
Externally publishedYes

Fingerprint

Starvation
starvation
warming
Escherichia coli
Aeromonas
Food
nutrient
nutrients
glucose
Glucose
Aquatic Organisms
mountain stream
aquatic environment
nutrient availability
Population
effect
Respiration
respiration
mountains
organisms

ASJC Scopus subject areas

  • Biotechnology
  • Food Science
  • Applied Microbiology and Biotechnology
  • Ecology

Cite this

Starvation effects on Escherichia coli and aquatic bacterial responses to nutrient addition and secondary warming stresses. / Wu, S. Y.; Klein, D. A.

In: Applied and Environmental Microbiology, Vol. 31, No. 2, 01.12.1976, p. 216-220.

Research output: Contribution to journalArticle

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