In this study, the effect of light wavelength on growth rate and lipid production of Synechocystis was investigated. Continuous cultivation system was used to have uniform cell density and avoid self-shading in order to obtain more precise results. Based on previous studies, red light is more efficient than other colors in the visible spectrum for cultivation of Synechocystis; however, the opti...

The aim of the present work was investigation various cultivation conditions in order to provide a foundation for sustainable, financially viable, and environmentally friendly system heterologous ?-phellandrene production by Synechocystis sp. PCC 6803. cells were able grow form distinct colonies both at internal external surfaces calcium alginate beads maintained their ability produce ?-phellan...

The cyanobacterium Synechocystis sp. strain PCC 6803 exhibited circadian rhythms in complete darkness. To monitor a circadian rhythm of the Synechocystis cells in darkness, we introduced a PdnaK1::luxAB gene fusion (S. Aoki, T. Kondo, and M. Ishiura, J. Bacteriol. 177:5606-5611, 1995), which was composed of a promoter region of the Synechocystis dnaK1 gene and a promoterless bacterial luciferas...

Synechocystis sp. PCC 6803 is a widely used model cyanobacterium, whose substrains can vary on both genotype and phenotype levels. Previously described phenotypic variations include ability of mixotrophic growth, ability of movement on agar plates and variations in pigments composition or cell size. In this study, we report for the first time significant variation among Synechocystis substrains...

Biotransformation of testosterone into 15β-hydroxytestosterone by the cyanobacterium Synechocystis expressing heterologous monooxygenase CYP110D1. The reaction is sustained reducing equivalents and oxygen provided oxygenic photosynthesis.

Cyanobacteria are photosynthetic prokaryotic organisms that share characteristics with bacteria and chloroplasts regarding mRNA degradation. Synechocystis sp. PCC6803 is a model organism for cyanobacteria, but not much is known about the mechanism of RNA degradation. Only one member of the RNase II-family is present in the genome of Synechocystis sp PCC6803. This protein was shown to be essenti...

Toxicological effect of pretilachlor on some physiological processes cyanobacterium Synechocystis sp. strain PUPCCC 64Davinder Pal Singh, Jasvirinder Singh Khattar, Alka, Gurdeep Kaur, Yadvinder

A 5.5-kb HindIII fragment of Synechocystis PCC6803 containing a liverwort (ORF316) homolog encoding a putative zinc finger protein was cloned. Nucleotide sequence analysis showed that the homology of the amino acid sequence deduced from the ORF326 of Synechocystis PCC6803 with the counterparts of a liverwort and tobacco was 50% and 46%, respectively. Synechocystis ORF326 also showed 38% homolog...

Sucrose-phosphate synthase (SPS) from the cyanobacterium Synechocystis sp. PCC 6803 lacks all of the Ser residues known to be involved in the regulation of higher plant SPS by protein phosphorylation. The Synechocystis SPS is also not allosterically regulated by glucose 6-phosphate or orthophosphate. To investigate the effects of expressing a potentially unregulated SPS in plants, the Synechocy...

We developed a novel single cell measurement of photosynthesis activity using fluorescent oxygen sensor in a microchamber with gas barrier layer. We used Synechocystis sp. PCC 6803, which is a series of cyanobacteria. The chamber wall contains oxygen sensor and gas barrier layer to measure the dissolved oxygen concentration in the chamber. The oxygen concentration is changed by aerobic respirat...