Effects of Light on Growth and Metabolism of Rhodococcus erythropolis

Selina Engelhart-Straub, Philipp Cavelius, Fabian Hölzl, Martina Haack, Dania Awad, Thomas Brueck, Norbert Mehlmer

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Rhodococcus erythropolis is resilient to various stressors. However, the response of R. erythropolis towards light has not been evaluated. In this study, R. erythropolis was exposed to different wavelengths of light. Compared to non-illuminated controls, carotenoid levels were significantly increased in white (standard warm white), green (510 nm) and blue light (470 nm) illuminated cultures. Notably, blue light (455, 425 nm) exhibited anti-microbial effects. Interestingly, cellular lipid composition shifted under light stress, increasing odd chain fatty acids (C15:0, C17:1) cultured under white (standard warm white) and green (510 nm) light. When exposed to blue light (470, 455, 425 nm), fatty acid profiles shifted to more saturated fatty acids (C16:1 to C16:0). Time-resolved proteomics analysis revealed several oxidative stress-related proteins to be upregulated under light illumination.

Original languageEnglish
Article number1680
JournalMicroorganisms
Volume10
Issue number8
DOIs
StatePublished - Aug 2022

Keywords

  • Rhodococcus
  • antimicrobial blue light
  • carotenoids
  • fatty acids
  • photo-oxidative stress
  • stress response
  • time-resolved proteomics

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