Planktochlorella nurekis gen. et sp. nov. (Trebouxiophyceae, Chlorophyta), a novel coccoid green alga carrying significant biotechnological potential.

Škaloud, Pavel; Němcová, Yvonne‬; Pytela, Jaromír; Богданов, Н. И.; Böck, Christina; Pickinpaugh, Sam H.

doi:10.5507/fot.2014.004

Cited by 27 publications

(20 citation statements)

References 33 publications

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“…PN is a unicellular autotrophic non-sedimenting alga with uninuclear, spherical, planktonic vegetative cells. This genus differs from the other genera of the family by the order of the nucleotides in its unique SSU and ITS 18S rRNA gene sequences (100% identity for SSU; 99.4% identity for ITS) (Skaloud et al 2014). The authentic strain CAUP H 8701 has recently been cryopreserved in a metabolic inactive state at the Culture Collection of Algae of Charles University in Prague, Czech Republic (Skaloud et al 2014).…”

Section: Doi: 1017221/8522-cjasmentioning

confidence: 93%

“…A green alga, Planktochlorella nurekis (PN), has recently been defined as a new genus and species belonging to the Parachlorella clade in Chlorellaceae, Chlorophyta (Skaloud et al 2014). This strain, formerly C. vulgaris IFR C-111, originates from Nurek Dam, Tajikistan, where it was originally isolated in 1977, and also occurs in Kazinga Channel, Uganda.…”

Section: Doi: 1017221/8522-cjasmentioning

confidence: 99%

“…This strain, formerly C. vulgaris IFR C-111, originates from Nurek Dam, Tajikistan, where it was originally isolated in 1977, and also occurs in Kazinga Channel, Uganda. It is characterized by a reduced sedimentation rate and a rather wide temperature tolerance (Skaloud et al 2014). PN is a unicellular autotrophic non-sedimenting alga with uninuclear, spherical, planktonic vegetative cells.…”

Section: Doi: 1017221/8522-cjasmentioning

confidence: 99%

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Effect of green alga Planktochlorella nurekis on selected bacteria revealed antibacterial activity in vitro

Čermák¹,

Pražáková²,

Marounek³

et al. 2015

CZECH J ANIM SCI

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ABSTRACT:The green alga Planktochlorella nurekis (Chlorellaceae, Chlorophyta) is considered a producer of antibacterial mixture of long-chain fatty acids, which has possibly similar composition and mode of action as chlorellin produced by another green alga, Chlorella vulgaris. Although the antibacterial properties of C. vulgaris have been reported, the interactions of P. nurekis with bacteria have not been determined yet. The aim of this study was to elucidate the effect of P. nurekis water suspension on growth of selected gastrointestinal bacteria in vitro so that it could be used as a suitable feed supplement in animal farming. Unknown bacterial populations occurring in the algal suspension were identified using 16S rRNA sequencing assay. Selected strains were cultivated with lyophilized P. nurekis and the antibacterial effect was monitored. The composition of fatty acids and heat sensitivity of antibacterial substances were also examined. Sequencing analysis of 71 bacterial 16S rRNA genes in xenic algal suspension identified common environmental microbiota, one strain belonging to the class Alphaproteobacteria, 17 to Betaproteobacteria, 44 to Gammaproteobacteria (dominated by Pseudomonas putida strains), and nine to Sphingobacteria. The antimicrobial activity of P. nurekis suspension was tested at a concentration range of 0.75-6 mg/ml. The highest inhibitory effect was observed on bifidobacteria. Statistically significant reductions in bacterial counts were also observed for Escherichia coli, Salmonella enterica var. Enteritidis, S. enterica var. Infantis, Campylobacter jejuni, and Arcobacter butzleri. The growth of Lactobacillus johnsonii was significantly stimulated. The relative proportions of C14-C22 fatty acids in P. nurekis were found as follows: saturated 54.28%, monounsaturated 30.40%, and polyunsaturated 7.16%. The antibacterial compounds present in P. nurekis suspension exhibited thermostability. The results indicate that P. nurekis can inhibit some pathogenic gastrointestinal bacteria and seems to be a promising essential nutrients source in animal nutrition.

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Section: Doi: 1017221/8522-cjasmentioning

confidence: 93%

Section: Doi: 1017221/8522-cjasmentioning

confidence: 99%

Section: Doi: 1017221/8522-cjasmentioning

confidence: 99%

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Effect of green alga Planktochlorella nurekis on selected bacteria revealed antibacterial activity in vitro

Čermák¹,

Pražáková²,

Marounek³

et al. 2015

CZECH J ANIM SCI

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“…Biologists marvel at the unexpected diversity of Zoochlorellalike endosymbionts in ciliates, sponges, and other lower animals [12]. Biotechnologists are able now to discriminate Chlorella from other genera and can appreciate the wealth of particular intra-and extracellular substances, such as lipids, amino acids, and carbohydrates of Chlorella-like algae, and their potential use as a source of animal feed and human nutrition, cosmetics and pharmaceuticals, or renewable energy [2,13].…”

Section: Modern Systematics Supports New Insights Into Science and Apmentioning

confidence: 99%

Chlorella: 125 years of the green survivalist

Krienitz

Huss

Böck

2015

Trends in Plant Science

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“…Additionally, molecular data can also help to resolve cases of taxonomic inflation caused by morphological variation (Elias et al 2013). Cases of morpho− logical crypticism and convergence are documented across classes Chlorophyceae and Trebouxiophyceae in the phylum Chlorophyta (Hanagata 1998;Friedl and Rybalka 2012;Fučiková and Lewis 2012;Leliaert et al 2012;Škaloud et al 2014), and are especially common in subaerial/aerial coccoid algae.…”

Section: Introductionmentioning

confidence: 99%

Morphology, ultrastructure and ecology of Muriella decolor (Chlorophyta) from subaerial habitats in Poland and the Antarctic

Czerwik-Marcinkowska¹,

Massalski²,

Olech³

et al. 2015

Polish Polar Research

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This paper offers a comparison of Muriella decolor specimens from different geographical regions and habitats (limestone caves in Poland and ice denuded areas near the Ecology Glacier, King George Island, South Shetland Islands, West Antarctic). Morpho− logical and cytological variability, ecology and life strategies of M. decolor were studied in fresh samples, and also in cultures grown on agar plates. The complete life cycle, with de− tailed ultrastructural (LM and TEM) analysis are presented. The electron microscopic ob− servations prove that materials identified as M. decolor collected in Poland and the Antarc− tic have distinct ultrastructural features. These include the chloroplast lamella arrangement, mitochondrial cristae structure and the cell wall thickness.

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Planktochlorella nurekis gen. et sp. nov. (Trebouxiophyceae, Chlorophyta), a novel coccoid green alga carrying significant biotechnological potential.

Cited by 27 publications

References 33 publications

Effect of green alga Planktochlorella nurekis on selected bacteria revealed antibacterial activity in vitro

Effect of green alga Planktochlorella nurekis on selected bacteria revealed antibacterial activity in vitro

Chlorella: 125 years of the green survivalist

Morphology, ultrastructure and ecology of Muriella decolor (Chlorophyta) from subaerial habitats in Poland and the Antarctic

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