Season variability of iron effects on periodic culture of microalgae Dunaliella viridis Teod.

Menzyanova, N. G.; Goltvyansky, A. V.; Kuznetsova, Yu. A.; Sysenko, E. I.

doi:10.1007/s11515-009-0019-4

Cited by 8 publications

(4 citation statements)

References 14 publications

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“…Although there are no studies on the influence of iron ions on carotenoid biosynthesis of acidophile microalgae, our results are in good agreement with the enhanced carotenoid accumulation published for other genera of microalgae; carotene accumulation has been shown to be enhanced in iron‐exposed Dunaliella species (Mojaat et al. 2008, Menzyanova et al. 2009).…”

Section: Resultssupporting

confidence: 91%

“…3C), therefore revealing carotenogenesis stimulation. Although there are no studies on the influence of iron ions on carotenoid biosynthesis of acidophile microalgae, our results are in good agreement with the enhanced carotenoid accumulation published for other genera of microalgae; carotene accumulation has been shown to be enhanced in iron-exposed Dunaliella species (Mojaat et al 2008, Menzyanova et al 2009). Further studies on gene expression of the carotenoid biosynthesis pathway are being developed at our laboratory to determine the role played by iron in the enhanced biosynthesis of carotenoids.…”

Section: Optical Density Range 680 Nmsupporting

confidence: 91%

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IDENTIFICATION AND PHYSIOLOGICAL ASPECTS OF A NOVEL CAROTENOID‐ENRICHED, METAL‐RESISTANT MICROALGA ISOLATED FROM AN ACIDIC RIVER IN HUELVA (SPAIN)¹

Garbayo

Torronteras

Forján³

et al. 2012

Journal of Phycology

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A heavy‐metal‐resistant, carotenoid‐enriched novel unicellular microalga was isolated from an acidic river in Huelva, Spain. The isolated ribosomal 18S subunit rDNA sequence showed homology with known sequences from green microalgae, the closest sequence (98% homology) belonging to the genus Coccomyxa. The isolated microalga therefore was an up to now uncultured microalga. The microalga was isolated from Tinto River area (Huelva, Spain), an acidic river that exhibits very low pH (1.7–3.1) with high concentrations of sulfuric acid and heavy metals, including Fe, Cu, Mn, Ni, and Al. Electron micrographs show that the microalga contains a large chloroplast with a presence of lipid droplets, an increased number of starch bodies as well as electron‐dense deposits and plastoglobules, the last observed only in iron‐exposed cells. Unlike other acidophile microalgae, the isolated microalga showed high growth rates when cultivated photoautotrophycally (up to 0.6 d−1) in a suitable culture medium prepared at our laboratory. The growth was shown to be iron dependent. When the microalga is grown in fluidized bed reactors, the high growth rates resulted in unexpectedly high productivities for being a microalga that naturally grows in acidic environments (0.32 g·L−1·d−1). The microalga also grows optimally on reduced carbon sources, including glucose and urea, and at an optimal temperature of 35°C. The alga pigment profile is particularly rich in carotenoids, especially lutein, suggesting that the microalga might have potential for antioxidant production, namely, xanthophylls.

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Section: Resultssupporting

confidence: 91%

Section: Optical Density Range 680 Nmsupporting

confidence: 91%

IDENTIFICATION AND PHYSIOLOGICAL ASPECTS OF A NOVEL CAROTENOID‐ENRICHED, METAL‐RESISTANT MICROALGA ISOLATED FROM AN ACIDIC RIVER IN HUELVA (SPAIN)¹

Garbayo

Torronteras

Forján³

et al. 2012

Journal of Phycology

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“…Similarly, Menzyanova et al. () reported that the IC in culture medium had an impact on cell growth and lipid content of Dunaliella viridis . An excess of metal, including iron, can lead to the formation of reactive oxygen species like hydrogen peroxide and other oxidant compounds (Miazek et al.…”

Section: Resultsmentioning

confidence: 89%

Enhancement of total lipid yield by nitrogen, carbon, and iron supplementation in isolated microalgae

Sivaramakrishnan

Incharoensakdi

2017

Journal of Phycology

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The biochemical contents and biodiesel production ability of three microalgal strains grown under different sodium nitrate, sodium carbonate, and ferric ammonium citrate (iron) levels were investigated. The highest biomass and lipid contents were found in Scenedesmus sp., Chlorella sp., and Chlamydomonas sp. when grown in normal BG-11 containing sodium carbonate concentration at 0.03 g · L , and in normal BG-11 containing iron concentration (IC) at 0.009 or 0.012 g · L . Increasing the sodium nitrate level increased the biomass content, but decreased the lipid content in all three microalgae. Among the three microalgae, Scenedesmus sp. showed the highest total lipid yield of 0.69 g · L under the IC of 0.012 g · L . Palmitic and oleic acids were the major fatty acids of Scenedesmus sp. and Chlamydomonas sp. lipids. On the other hand, Chlorella sp. lipids were rich in palmitic, oleic, and linolenic acids, and henceforth contributing to poor biodiesel properties below the standard limits. The three isolated strains had a potential for biodiesel production. Nevertheless, Scenedesmus sp. from stone quarry pond water was the most suitable source for biodiesel production with tolerance toward the high concentration of sodium carbonate without the loss of its biodiesel properties.

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“…We are often faced with high variability of receiving β-carotene [21,22], microbial biomass yield [10,24], and the ambiguity of the obtained scientific results.…”

Section: Introductionmentioning

confidence: 99%

Growth of Dunaliella in "Ideal" Conditions Retains Annual Variability of Biochemical Features

Божков¹,

Menzyanova²,

Kovaleva³

et al. 2014

ujps

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In this work we investigated the annual dynamics of the biomass accumulation of microalgae Dunaliella viridis, its content of nucleic acids, proteins, and triacylglycerols at accumulative cultivation while maintaining the culture at "ideal constant conditions throughout the year in order to eliminate the high variability of these parameters, which occur in conventional culture conditions. The cultivation of D. viridis in constant conditions throughout the year had not eliminated the rhythmic nature of the biomass accumulation and pronounced variability of its composition. The variability has flicker noise structure with a period of about 4 months. This variability was not related with the seasons of the year, but in some cases coincided well with the dynamics of solar activity, in particular with the change of the corpuscular and electromagnetic radiation. Several types of interactions between biological indicators and solar activity were revealed: direct, inverse and U-shaped one. It was hypothesized the variably dominant factors explaining the diversity of responses to solar activity, which is based on a hierarchical organization of water-molecular structured network of cell.

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Season variability of iron effects on periodic culture of microalgae Dunaliella viridis Teod.

Cited by 8 publications

References 14 publications

IDENTIFICATION AND PHYSIOLOGICAL ASPECTS OF A NOVEL CAROTENOID‐ENRICHED, METAL‐RESISTANT MICROALGA ISOLATED FROM AN ACIDIC RIVER IN HUELVA (SPAIN)¹

IDENTIFICATION AND PHYSIOLOGICAL ASPECTS OF A NOVEL CAROTENOID‐ENRICHED, METAL‐RESISTANT MICROALGA ISOLATED FROM AN ACIDIC RIVER IN HUELVA (SPAIN)¹

Enhancement of total lipid yield by nitrogen, carbon, and iron supplementation in isolated microalgae

Growth of Dunaliella in "Ideal" Conditions Retains Annual Variability of Biochemical Features

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Season variability of iron effects on periodic culture of microalgae Dunaliella viridis Teod.

Cited by 8 publications

References 14 publications

IDENTIFICATION AND PHYSIOLOGICAL ASPECTS OF A NOVEL CAROTENOID‐ENRICHED, METAL‐RESISTANT MICROALGA ISOLATED FROM AN ACIDIC RIVER IN HUELVA (SPAIN)1

IDENTIFICATION AND PHYSIOLOGICAL ASPECTS OF A NOVEL CAROTENOID‐ENRICHED, METAL‐RESISTANT MICROALGA ISOLATED FROM AN ACIDIC RIVER IN HUELVA (SPAIN)1

Enhancement of total lipid yield by nitrogen, carbon, and iron supplementation in isolated microalgae

Growth of Dunaliella in "Ideal" Conditions Retains Annual Variability of Biochemical Features

Contact Info

Product

Resources

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IDENTIFICATION AND PHYSIOLOGICAL ASPECTS OF A NOVEL CAROTENOID‐ENRICHED, METAL‐RESISTANT MICROALGA ISOLATED FROM AN ACIDIC RIVER IN HUELVA (SPAIN)¹

IDENTIFICATION AND PHYSIOLOGICAL ASPECTS OF A NOVEL CAROTENOID‐ENRICHED, METAL‐RESISTANT MICROALGA ISOLATED FROM AN ACIDIC RIVER IN HUELVA (SPAIN)¹