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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

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 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.

ORGANISM(S): Halothece sp. PCC 7418

PROVIDER: GSE206286 | GEO | 2022/09/11

REPOSITORIES: GEO

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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

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

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 salinity environment on Halothece transcriptomes were examined using RNA sequencing.

2023-05-21 | GSE213175 | GEO

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 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

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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: Not available

| S-EPMC7151593 | biostudies-literature

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.

2024-05-06 | GSE264731 | GEO

Halotolerant cyanobacterium Aphanothece halophytica contains a betaine transporter active at alkaline pH and high salinity.

Project description: Not available

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Heterologous Production of Glycine Betaine Using <i>Synechocystis</i> sp. PCC 6803-Based Chassis Lacking Native Compatible Solutes.

Project description: Not available

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De novo transcriptomic profiling of halotolerant microalga Dunaliella salina (Chlorophyta) in response to reciprocal alteration of salinities.

Project description:The unicellular microalga Dunaliella salina is one of the halotolerant and cell wall-less green microalgae in Dunaliella genus. The ability of halotolerance in Dunaliella is attributed to the accumulation of glycerol. Both sugar made by photosynthesis and starch serve as carbon sources for glycerol biosynthesis. Quantitative PCR-based analyses concluded no apparent transcriptional regulation of glycerol, carbon fixation, and starch metabolisms upon salinity stresses. To examine whether or not transcriptional regulation is involved at the transcriptomic level, we assembled a de novo deep sequencing transcriptome. By using a pathway-based approach, we show that low- and high-salt (i.e., 0.5M versus 2M NaCl) adapted cells share a common transcriptomic profile and that subsets of ESTs associated with energy metabolisms are less affected upon salinity stress. We find that enzymes involved in glycerol, carbon fixation, and starch metabolisms are encoded by multiple EST isoforms. We show that EST isoforms encoding dihydroacetone reductase in glycerol metabolism, phosphoglycerate kinase in carbon fixation, and beta-amylase and fructobiphosphate aldolase in starch metabolism display a correlated transcriptional level change to the alteration of glycerol and starch contents upon salinity stresses. Taken together, our results demonstrate that some enzymes involved in glycerol, carbon fixation, and starch metabolisms are regulated at the transcriptional level upon salinity stresses. Furthermore, our analyses indicate that energy metabolisms are not drastically affected upon salinity stresses, consistent with its ability to adapt to a wide range of salinities.

2017-02-22 | GSE74466 | GEO

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