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Research Topics

Adaptive response


Research in LEMiRE addresses questions about the adaptive responses of bacteria to environmental fluctuations. Based on an integrative approach and functional genomics tools, these studies build our knowledge of the functioning of environmental bacteria and of how bacteria acclimate to environmental stress.

Published on 8 July 2015

  • Ps​​eudomonas brassicacearum

Transitions between various environments may occur over relatively short time scales, requiring bacteria to rapidly adjust their physiology. Small regulatory RNAs (sRNAs) are appropriate for such responses. We focus on the involvement of sRNAs in the adaptive response of P. brassicacearum to environmental variations and in the control of a variety of biological functions required for beneficial plant-bacteria interactions.
  • ​​​​Ramlibacter tataou​inensis

Ramlibacter tataouinensis TTB310, a betaproteobacterium isolated from a semi-arid re​gion of South Tunisia (Tataouine), is characterized by the presence of both cyst-like and rod-shaped​ cells in pure culture. The original cell cycle of strain TTB310, with desiccation tolerant cyst-like cells capable of division and desiccation-sensitive motile rods capable of dissemination, appears to be a novel adaptation for life in a hot and dry desert environment. 

​We use R. tataouinensis as bacterial model to address questions on bacterial adaptation to dry and hot desert, especially through the effect of ​light on cell cycle.