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Transcriptome analysis of a N. punctiforme sigG mutant

ABSTRACT: Nostoc punctiforme is a filamentous cyanobacterium capable if differentiating normal vegetative cells into nitrogen fixing heterocysts and spore-like akinetes. Here the effects of a sigma factor (sigG) mutation on the transcriptome was analyzed under 1) normal vegetative growth, and 2) following akinete induction. A zwf strain grown with fructose differentiates into akinetes following transfer to darkness. A DNA microarray was used to compare gene expression from the zwf strain to a zwf sigG double mutant two days following akinte induction by darkness.

ORGANISM(S): Nostoc punctiforme

PROVIDER: GSE61442 | GEO | 2015/09/01

SECONDARY ACCESSION(S): PRJNA261160

REPOSITORIES: GEO

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Transcriptome analysis of a N. punctiforme sigG mutant

Project description:Nostoc punctiforme is a filamentous cyanobacterium capable if differentiating normal vegetative cells into nitrogen fixing heterocysts and spore-like akinetes. Here the effects of a sigma factor (sigG) mutation on the transcriptome was analyzed under 1) normal vegetative growth, and 2) following akinete induction. A zwf strain grown with fructose differentiates into akinetes following transfer to darkness. A DNA microarray was used to compare gene expression from the zwf strain to a zwf sigG double mutant two days following akinte induction by darkness. Gene expression in a zwf mutant strain was compared to a zwf sigG double mutant strain under normal vegetative growth and at two days following akinete induction. Each experiment used three array slides with two biological replicates. A dye swap was used for one biological replicate.

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Project description:Change in gene expression for wild-type Nostoc punctiforme ATCC 29133, or three derivative strains with sigma factors deleted, over the time course of hormogonium development

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