Working Paper Review Version 1 This version is not peer-reviewed

Stress Signalling in Cyanobacteria: A Mechanistic Overview

Version 1 : Received: 22 October 2020 / Approved: 23 October 2020 / Online: 23 October 2020 (12:26:14 CEST)

A peer-reviewed article of this Preprint also exists.

Rachedi, R.; Foglino, M.; Latifi, A. Stress Signaling in Cyanobacteria: A Mechanistic Overview. Life 2020, 10, 312. Rachedi, R.; Foglino, M.; Latifi, A. Stress Signaling in Cyanobacteria: A Mechanistic Overview. Life 2020, 10, 312.

Journal reference: Life 2020, 10, 312
DOI: 10.3390/life10120312

Abstract

Cyanobacteria are highly diverse, widely distributed photosynthetic bacteria inhabiting various environments ranging from deserts to the cryosphere. Throughout this range of niches, they have to cope with various stresses and kinds of deprivation which threaten their growth and viability. In order to adapt to these stresses and survive, they have developed several global adaptive responses which modulate the patterns of gene expression and the cellular functions at work. Sigma factors, two-component systems, transcriptional regulators and small regulatory RNAs acting either separately or collectively, for example, induce appropriate cyanobacterial stress responses. The aim of this review is to summarize our current knowledge about the diversity of the sensors and regulators involved in the perception and transduction of light, oxidative and thermal stresses and nutrient starvation responses. The studies discussed here point to the fact that various stresses affecting the photosynthetic capacity are transduced by common mechanisms.

Subject Areas

Cyanobacteria; Gene expression; Regulation; Signalling; Stress

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