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Global transcriptomic profile in the halotolerant cyanobacterium Halothece sp. PCC 7418 cells acclimated to different salinity conditions

ABSTRACT: Halotolerant species are of interest since they occur naturally in environments with excess toxic ions. The cyanobacterium Halothece sp. PCC 7418 (hereafter referred to as Halothece) exhibits remarkable halotolerance and was used to examine stress-responsive regulatory mechanisms. The effects of salinity environment on Halothece transcriptomes were examined using RNA sequencing.

ORGANISM(S): Halothece sp. PCC 7418

PROVIDER: GSE213175 | GEO | 2023/05/21

REPOSITORIES: GEO

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Effect of temperature on global transcriptomic profile in the halotolerant cyanobacterium Halothece sp. PCC 7418

Project description:Halotolerant species are of interest since they occur naturally in environments with excess toxic ions. The cyanobacterium Halothece sp. PCC 7418 (hereafter referred to as Halothece) exhibits remarkable halotolerance and was used to examine stress-responsive regulatory mechanisms. The effects of temperature on Halothece transcriptomes were examined using RNA sequencing.

2023-05-21 | GSE213176 | GEO

Global transcriptome analyses and intracellular regulatory mechanisms of glycine betaine and mycosporine-2-glycine expression in the halotolerant cyanobacterium Halothece sp. PCC 7418 exposed to abiotic stresses II

Project description:Halotolerant species are of interest since they occur naturally in environments with excess toxic ions. The cyanobacterium Halothece sp. PCC 7418 (hereafter referred to as Halothece) exhibits remarkable halotolerance and was used to examine stress-responsive regulatory mechanisms. The effects of sa;t-down shock on Halothece transcriptomes were examined using RNA sequencing.

2022-09-11 | GSE207763 | GEO

Project description:Halotolerant species are of interest since they occur naturally in environments with excess toxic ions. The cyanobacterium Halothece sp. PCC 7418 (hereafter referred to as Halothece) exhibits remarkable halotolerance and was used to examine stress-responsive regulatory mechanisms. The effects of five different stimuli on Halothece transcriptomes were examined using RNA sequencing. In response to diverse stresses, there were both common and stress-specific transcriptional responses.

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Global transcriptional and circadian regulation in a halotolerant cyanobacterium Halothece sp. PCC7418

Project description:Substantial evidence has been accumulated about the molecular basis underlying halotolerance; however, insights into the regulatory networks for relevant genes and mechanisms of their interplay remain elusive. Here, we present a comprehensive transcriptome investigation, using RNA sequencing, of specific metabolic pathways and networks in a halotolerant cyanobacterium, Halothece sp. PCC7418, including the circadian rhythm profile. Dissecting the transcriptome presented the intracellular regulation of gene expressions, which was linked with ion homeostasis, protein homeostasis, biosynthesis of compatible solutes, and signal transduction, for adaptations to high-salinity environments. The efficient production and distribution of energy were also implicated in this acclimation process. Furthermore, we found that high-salinity environments had a dramatic effect on the global transcriptional expression regulated by the circadian clock. Our findings can provide a comprehensive transcriptome for elucidating the molecular mechanisms underlying halotolerance in cyanobacteria.

2022-06-09 | GSE205640 | GEO

Global transcriptomic profile in the halotolerant cyanobacterium Halothece sp. PCC 7418 cells acclimated to different salinity conditions

Project description:Global transcriptomic profile in the halotolerant cyanobacterium Halothece sp. PCC 7418 cells acclimated to different salinity conditions

| PRJNA879449 | ENA

Global transcriptional and circadian regulation in a halotolerant cyanobacterium Halothece sp. PCC7418

Project description:Global transcriptional and circadian regulation in a halotolerant cyanobacterium Halothece sp. PCC7418

| PRJNA846752 | ENA

Effect of temperature on global transcriptomic profile in the halotolerant cyanobacterium Halothece sp. PCC 7418

Project description:Effect of temperature on global transcriptomic profile in the halotolerant cyanobacterium Halothece sp. PCC 7418

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Transcriptome analysis of Escherichia coli TO114 under salt stress

Project description:Here, we treated Escherichia coli strain TO114 expressing a halotolerant cyanobacterium Halothece sp. PCC7418-derived NhaC Na+/H+ antiporter (H2569) with salt stress (0.4 M NaCl) and performed RNA sequencing analysis.

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Global transcriptional and circadian regulation in a halotolerant cyanobacterium Halothece sp. PCC7418

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The Effects of Salts and Osmoprotectants on Enzyme Activities of Fructose-1,6-biphosphate Aldolases in a Halotolerant Cyanobacterium, Halothece sp. PCC 7418.

Project description:The halotolerant cyanobacterium, Halothece sp. PCC 7418, possesses two classes of fructose-1,6-bisphosphate aldolase (FBA): H2846 and H2847. Though class I (CI)-FBA H2846 is thought to be associated with salt tolerance, the regulatory mechanisms, molecular characteristics, and expression profiles between H2846 and class II (CII)-FBA H2847 have scarcely been investigated. Here, we show that the accumulation of the H2846 protein is highly responsive to both up- and down-shock with NaCl, whereas H2847 is constitutively expressed. The activity of CI- and CII-FBA in cyanobacterial extracts is correlated with the accumulation patterns of H2846 and H2847, respectively. In addition, it was found that these activities were inhibited by NaCl and KCl, with CII-FBA activity strikingly inhibited. It was also found that the CI-FBA activity of recombinant H2846 was hindered by salts and that this hindrance could be moderated by the addition of glycine betaine (GB), whereas no moderation occurred with other potential osmoprotectant molecules (proline, sucrose, and glycerol). In addition, a phylogenetic analysis showed that CI-FBAs with higher similarities to H2846 tended to be distributed among potential GB-synthesizing cyanobacteria. Taken together, our results provide insights into the independent evolution of the CI- and CII-FBA gene families, which show distinct expression profiles and functions following salt stress.

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