Entrainment of the Circadian Clock of the Enteric Bacterium Klebsiella aerogenes by Temperature Cycles

Jiffin K. Paulose, Charles V. Cassone, Kinga B. Graniczkowska, Vincent M. Cassone

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

The gastrointestinal bacterium Klebsiella (née Enterobacter) aerogenes expresses an endogenously generated, temperature-compensated circadian rhythm in swarming motility. We hypothesized that this rhythm may be synchronized/entrained in vivo by body temperature (TB). To determine entrainment, cultures expressing bioluminescence were exposed to temperature cycles of 1°C (35°C–36°C) or 3°C (34°C–37°C) in amplitude at periods (T-cycles) of T = 22, T = 24, or T = 28 h. Bacteria entrained to all T-cycles at both amplitudes and with stable phase relationships. A high-amplitude phase response curve (PRC) in response to 1-h pulses of 3°C temperature spike (34°C–37°C) at different circadian phases was constructed, revealing a Type-0 phase resetting paradigm. Furthermore, real-time bioluminescence imaging revealed a spatiotemporal pattern to the circadian rhythm. These data are consistent with the hypothesis that the K. aerogenes circadian clock entrains to its host via detection of and phase shifting to the daily pattern of TB.

Original languageEnglish
Pages (from-to)1202-1213
Number of pages12
JournaliScience
Volume19
DOIs
StatePublished - Sep 27 2019

Bibliographical note

Publisher Copyright:
© 2019 The Author(s)

Keywords

  • Biological Sciences
  • Chronobiology
  • Microbiology

ASJC Scopus subject areas

  • General

Fingerprint

Dive into the research topics of 'Entrainment of the Circadian Clock of the Enteric Bacterium Klebsiella aerogenes by Temperature Cycles'. Together they form a unique fingerprint.

Cite this