Introduction to the Cyanobacteria

Whitton, Brian A.; Potts, Malcolm

doi:10.1007/0-306-46855-7_1

Cited by 129 publications

(131 citation statements)

References 36 publications

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“…Cyanobacteria are an ancient, large, and diverse group of prokaryotic autotrophs with an oxygenic photosynthesis [11]. Microcystis has been widely recognized as one of the most toxigenic common bloom-forming cyanobacteria found in fresh water [12].…”

Section: Introductionmentioning

confidence: 99%

Arsenic speciation and effect of arsenate inhibition in a Microcystis aeruginosa culture medium under different phosphate regimes

Guo

Gong

Wang

et al. 2011

Enviro Toxic and Chemistry

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Abstract-To assess the ecological impact of arsenic pollution during cyanobacterial blooms, As speciation and cyanobacterial growth in phosphate-modified Microcystis aeruginosa cultures treated with arsenate were investigated under laboratory conditions. Marked growth inhibition was observed when arsenate was added. The inhibition effect of 1 mM arsenate was lower than that of 10 mM arsenate. Increasing phosphate supply (0-175 mM) in the medium decreased the inhibition of As. In the medium, arsenate, arsenite, and dimethylarsenicals (DMA) occurred under phosphate-deprivation (0 mM) and phosphate-excess (175 mM) conditions. However, only arsenate and DMA were detected under phosphate-limited (1 mM) and phosphate-rich (10 mM) conditions. Moreover, arsenite and DMA concentrations had significantly positive correlation with the biomass production of M. aeruginosa in the existence of phosphate. Arsenic speciation was more significantly affected by phosphate levels than arsenate concentrations. Recovery of total As content in M. aeruginosa culture medium increased with the increasing phosphate supply. The duration of arsenate contamination in the culture of M. aeruginosa had no influence on the variation of As species but affected the concentration of them in the medium under the phosphateexcess condition. This demonstrated that the effect of M. aeruginosa on As speciation was not related to the duration of As contamination under the phosphate-excess condition. Environ.

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Section: Introductionmentioning

confidence: 99%

Arsenic speciation and effect of arsenate inhibition in a Microcystis aeruginosa culture medium under different phosphate regimes

Guo

Gong

Wang

et al. 2011

Enviro Toxic and Chemistry

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“…All three are phenetic schemes that place different emphasis on aspects of the morphology, biochemistry, physiology and DNA homologies of field communities and pure cultures. Depending on the context of usage, each scheme has its own shortcomings and advantages (Whitton & Potts, 2000).…”

Section: Introductionmentioning

confidence: 99%

“…Other important questions are how far molecular studies will confirm the taxa recognized at present (from both bacteriological and classical methods) and how soon it will be possible to use molecular approaches routinely as a rapid means of characterizing cells from natural populations (Whitton & Potts, 2000). Unfortunately, the conclusions that derive from such molecular studies, and the various ' phylogenetic ' trees illustrating similarities based on sequences from particular parts of the genome, often use results from strains whose generic and specific names are doubtful.…”

Section: Introductionmentioning

confidence: 99%

“…In most cases, these strains have been maintained in culture for decades, they have lost morphological and physiological properties of determinative value and many are of unknown origin. This restricts the value of such trees and analyses for comparing possible evolutionary relationships with the taxonomic relationships suggested by classical names (Whitton & Potts, 2000).…”

Section: Introductionmentioning

confidence: 99%

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Form species Nostoc commune (Cyanobacteria).

Wright¹,

Prickett²,

Helm³

et al. 2001

International Journal of Systematic and Evolutionary Microbiology

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The form species concept for the Cyanobacteria was evaluated using a comprehensive set of Nostoc samples that were collected during the past two centuries, from all continents, including regions from the Tropics to the Poles. Phylogenies were constructed based upon the conserved regions of tRNA Leu (UAA) group I intron DNA sequences. Thirty-four forms contained a tRNA Leu (UAA) intron of 284 nt. These 284-nt introns contained 200 nt of conserved sequence that, in most cases, shared 100 % sequence identity, they had three variable regions (I, II and III) amounting to 84 nt, contained no hypervariable region and formed a discrete cluster in phylogenetic analysis. These forms represented 31 independent populations in both hemispheres and constitute examples of form species Nostoc commune. Multiple introns were obtained from several of the populations. Ten populations contained introns of 287-340 nt with a hypervariable region, 8 to 59 nt in length, located between variable regions I and II. Alignments identified 15 examples where 5'-AAAAUCC-3' occurred at the hypervariable region-variable region II boundary ; this sequence is identical to the conserved sequence at the 3' intron-exon boundary (splice site) within the tRNA Leu (UAA) gene. The possibility that hypervariable regions were removed from the primary intron through secondary splicing was tested in vitro but proved to be negative under the experimental conditions used. Shared morphologies of genetically different strains, dissimilar morphologies in strains that share identical genetic markers, incorrect naming of culture collection strains and genetic drift in cultured strains emphasize that the successful delineation of cyanobacterial species requires the application of multiple taxonomic criteria.

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“…These oxygenic photoauthotrophic bacteria are among the oldest and most populous organisms on our planet [10,11]. Owing to their potential for industrial applications in areas including bio-fuels, agriculture, drug-discovery and biopharmaceutical precursors, cyanobacteria have become an important research area [12,13].…”

Section: Introductionmentioning

confidence: 99%

Current trends in high throughput proteomics in cyanobacteria

Wright

2009

FEBS Letters

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a b s t r a c tAdvancements in genome sequencing and high throughput proteomics of cyanobacterial strains led to 13 published reports, from a small number of laboratories. These successful studies focused on Synechocystis, Nostoc and Anabaena strains, prochlorococcus, and halotolerant Euhalothece. The implications of emerging quantitative aspects developed and applied in these large-scale studies are assessed in the wake of advanced cyanobacterial research. Furthermore, contributions from traditional and early high throughput analysis of cyanobacterial proteomics are compared and summarised. Finally, opinions are provided to link both the trends and the future challenges. This review aims to push the synergy between proteomics and cyanobacterial research to improve both the technical and biological significance.

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Introduction to the Cyanobacteria

Cited by 129 publications

References 36 publications

Arsenic speciation and effect of arsenate inhibition in a Microcystis aeruginosa culture medium under different phosphate regimes

Arsenic speciation and effect of arsenate inhibition in a Microcystis aeruginosa culture medium under different phosphate regimes

Form species Nostoc commune (Cyanobacteria).

Current trends in high throughput proteomics in cyanobacteria

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