Research in the transcription of bacteria using RNA data
Abstract
Synechococcus sp. PCC 7942 and Synechocystis sp. PCC 6803 are model cyanobacteria from which the metabolism and adaptive responses of other cyanobacteria are inferred. In this study, we used RNAseq to characterize the transcriptomes of Synechocystis sp. PCC 6803 and Synechococcus sp. PCC 7942 under various stress conditions in order to reveal their transcriptional responses and acclimation mechanism to environmental stress and improve their genome annotations. The specific stresses we studied were increased salinity, increased pH, mild carbon limitation, decreased temperature, and decreased light. At first, differential gene expression analysis showed that the specific responses of the two strains were by no means identical. Transcriptome profiles also allowed us to improve the structural annotation of the genome, i.e. identify possible missed genes (including anti-sense), alter gene coordinates and determine transcriptional units (operons). In addition, we reported proteins that are i ...
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