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9 results for “Anabaena”
Anabaena circadian clock behavior under nitrogen-poor conditions from single-cell measurements of fluorescence intensity
<p>Circadian clock arrays in multicellular filaments of the heterocyst-forming cyanobacterium Anabaena sp. strain PCC 7120 display remarkable spatio-temporal coherence under nitrogen-replete conditions. To shed light on the interplay between circadian clocks and the formation of developmental patterns, we followed the expression of a clock-controlled gene under nitrogen deprivation, at the level of individual cells. Our experiments showed that differentiation into heterocysts took place preferentially within a limited interval of the circadian clock cycle, that gene expression in different vegetative intervals along a developed filament was discoordinated, and that the circadian clock was active in individual heterocysts. Furthermore, Anabaena mutants lacking the kaiABC genes encoding the circadian clock core components produced heterocysts but failed in diazotrophy. Therefore, genes related to some aspect of nitrogen fixation, rather than early or mid-heterocyst differentiation genes, are likely affected by the absence of the clock. A bioinformatics analysis supports the notion that RpaA may play a role as master regulator of clock outputs in Anabaena, the temporal control of differentiation by the circadian clock and the involvement of the clock in proper diazotrophic growth. Together, these results suggest that under nitrogen-deficient conditions, the clock coherent unit in Anabaena is reduced from a full filament under nitrogen-rich conditions to the vegetative cell interval between heterocysts.</p>
Anabaena circadian clock behavior under nitrogen-poor conditions from single-cell measurements of fluorescence intensity
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Deletion and Complementation of Alr3614 in Anabaena PCC7120
GEO Series GSE183629. Nostoc sp. PCC 7120 = FACHB-418. 4 samples. Type: Expression profiling by array.
Deep sequencing of HetR-bound DNA reveals novel HetR targets in Anabaena sp. strain PCC 7120
GEO Series GSE51886. Nostoc sp. PCC 7120 = FACHB-418. 2 samples. Type: Genome binding/occupancy profiling by high throughput sequencing.
The role of the LysR-type transcription factor PacR in regulating nitrogen metabolism in Anabaena sp. PCC7120
GEO Series GSE280386. Nostoc sp. PCC 7120 = FACHB-418. 18 samples. Type: Expression profiling by high throughput sequencing.
Identification of the global transcriptional regulator All3953 (RbcR) in the cyanobacterium Anabaena sp. PCC 7120 by ChIP-Seq analysis
GEO Series GSE58861. Nostoc sp. PCC 7120 = FACHB-418. 4 samples. Type: Genome binding/occupancy profiling by high throughput sequencing.
Transcriptional Regulation of Anabaena 7120 response to Nitrogen Deprivation
GEO Series GSE26633. Nostoc sp. PCC 7120 = FACHB-418. 4 samples. Type: Expression profiling by high throughput sequencing.
Cell-specific gene expression in Anabaena variabilis grown phototrophically, mixotrophically, and heterotrophically
GEO Series GSE46076. Trichormus variabilis ATCC 29413. 27 samples. Type: Expression profiling by array.
Anabaena PCC7120 infection with Cyanophage A1
GEO Series GSE183630. Nostoc sp. PCC 7120 = FACHB-418. 4 samples. Type: Expression profiling by array.
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