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Stress Signaling in Cyanobacteria: A Mechanistic Overview

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.
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Submitted on : Friday, January 21, 2022 - 3:47:23 PM
Last modification on : Thursday, March 24, 2022 - 1:08:02 PM

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Raphaël Rachedi, Maryline Foglino, Amel Latifi. Stress Signaling in Cyanobacteria: A Mechanistic Overview. Life, MDPI, 2020, 10 (12), pp.312. ⟨10.3390/life10120312⟩. ⟨hal-03539320⟩

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