A New Species of Freshwater Algae <i>Nephrochlamys yushanlensis</i> sp. nov. (Selenastraceae, Sphaeropleales) and Its Lipid Accumulation during Nitrogen and Phosphorus Starvation

Maltsev, Yevhen; Maltseva, І. А.; Maltseva, Svetlana; Kociolek, John Patrick; Kulikovskiy, Maxim

doi:10.1111/jpy.13116

Cited by 24 publications

(11 citation statements)

References 45 publications

(82 reference statements)

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“…[3][4][5][6]. Of significant interest to the food and feed industry is the ability of microalgae to produce carotenoids such as β-carotene, astaxanthin, lutein, as well as lipids containing a wide variety of fatty acids, including long-chain polyunsaturated fatty acids (PUFAs) from the omega-3 and omega-6 [7][8][9][10][11][12][13] group.…”

Section: Introductionmentioning

confidence: 99%

Influence of Light Conditions on Microalgae Growth and Content of Lipids, Carotenoids, and Fatty Acid Composition

Maltsev

Maltseva

Kulikovskiy

et al. 2021

Biology

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214

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Microalgae are a valuable natural resource for a variety of value-added products. The growth of microalgae is determined by the impact of many factors, but, from the point of view of the implementation of autotrophic growth, light is of primary importance. This work presents an overview of the influence of light conditions on the growth of microalgae, the content of lipids, carotenoids, and the composition of fatty acids in their biomass, taking into account parameters such as the intensity, duration of lighting, and use of rays of different spectral composition. The optimal light intensity for the growth of microalgae lies in the following range: 26−400 µmol photons m−2 s−1. An increase in light intensity leads to an activation of lipid synthesis. For maximum lipid productivity, various microalgae species and strains need lighting of different intensities: from 60 to 700 µmol photons m−2 s−1. Strong light preferentially increases the triacylglyceride content. The intensity of lighting has a regulating effect on the synthesis of fatty acids, carotenoids, including β-carotene, lutein and astaxanthin. In intense lighting conditions, saturated fatty acids usually accumulate, as well as monounsaturated ones, and the number of polyunsaturated fatty acids decreases. Red as well as blue LED lighting improves the biomass productivity of microalgae of various taxonomic groups. Changing the duration of the photoperiod, the use of pulsed light can stimulate microalgae growth, the production of lipids, and carotenoids. The simultaneous use of light and other stresses contributes to a stronger effect on the productivity of algae.

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Section: Introductionmentioning

confidence: 99%

Influence of Light Conditions on Microalgae Growth and Content of Lipids, Carotenoids, and Fatty Acid Composition

Maltsev

Maltseva

Kulikovskiy

et al. 2021

Biology

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214

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“…Nephrochlamys yushanlensis control was cultured with N, N-P and P deficiency and lipid contents were determined. Total lipid contents were found to be 31% control, 58.6% N(-), 34% P(-), and 49% N-P(-), respectively (Maltsev et al, 2021). In this study, both N and P deficiencies caused an increase in lipid ratios and a decrease in protein ratios in all salinity groups.…”

Section: Discussionmentioning

confidence: 44%

The Effect of Nitrogen and Phosphorus Limitations at Different Salt Ratios on Growth and Biochemical Composition of Tetraselmis suecica (Chlorodendrophyceae)

PİHAVA>

Uslu

2022

Journal of Advanced Research in Natural and Applied Sciences

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Algae are plant organisms in the aquatic environment that produce organic molecules, absorb carbon dioxide and give oxygen to the environment with this process. Algae, one of the most important living resources of the seas, are used in many fields such as food, agriculture, cosmetics, medicine, pharmacy, industry and biofuel source thanks to the metabolites they store in the cell. In the study carried out to determine the effects of nitrogen and phosphorus limitations at different salinity rates on the chlorophyll a, dry matter, optical density, protein, lipid and fatty acid contents of the microalgae Tetraselmis suecica from the class Chlorodendrophyceae cultured in the laboratory conditions, at ‰15, 30 and 45 salinity rates 50% N and 50% P reductions were applied. The lowest growth detected in the treated experimental groups was determined in the culture containing 50% N(-). While the highest lipid ratio was determined with 39.8±1% in 50% N(-) culture, the closest ratio was determined in 50% P(-) culture with 34.6%. Unsaturated fatty acids (PUFA) contents were determined in the groups containing the highest 50% P(-). The protein value was determined as 22.3% in the 50% P(-) group and 15.7% in the 50% N(-) group at ‰30 salinity.

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“…Biomass preparation for the FAME profiling was performed according to Maltsev et al. (2021b). The VP225 cyanobacterial suspensions were transferred to 50 mL tubes.…”

Section: Methodsmentioning

confidence: 99%

Phylogeny and fatty acid profiles of Aliinostoc vietnamicum sp. nov. (cyanobacteria) from the soils of Vietnam

Maltseva

Kezlya

Krivova

et al. 2022

Journal of Phycology

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A new cyanobacterial species of Aliinostoc, A. vietnamicum sp. nov., is recorded in the tropical forest soil from the C at Tiên National Park, Vietnam. The analysis is based on morphological characters, 16S rDNA phylogeny, ITS secondary structure, and fatty acid composition analysis. Aliinostoc vietnamicum differed from the other species of the genus by the size and shape of vegetative cells, size of akinetes and heterocytes, and presence of granular polyphosphate inclusions in vegetative cells. The evolutionary distance matrix based on the 16S rRNA gene shared 96.2-98.2% similarities with other Aliinostoc sequences. The phylogeny inferred by maximum likelihood and Bayesian inference placed A. vietnamicum in the Aliinostoc clade, within the Nostocaceae. For the first time, fatty acid composition analysis was obtained for a member of the genus Aliinostoc with cultivation time experiments. a-linolenic (27.54-37.75%), palmitic (13.87-22.65%), and stearic (10.08-20.27%) acids were the dominant fatty acids when cultured during the exponential growth phase, as well as during stationary. This is the first finding of a strain with such a high content of stearic acid among cyanobacteria with Nostoc-like morphology.

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A New Species of Freshwater Algae Nephrochlamys yushanlensis sp. nov. (Selenastraceae, Sphaeropleales) and Its Lipid Accumulation during Nitrogen and Phosphorus Starvation

Cited by 24 publications

References 45 publications

Influence of Light Conditions on Microalgae Growth and Content of Lipids, Carotenoids, and Fatty Acid Composition

Influence of Light Conditions on Microalgae Growth and Content of Lipids, Carotenoids, and Fatty Acid Composition

The Effect of Nitrogen and Phosphorus Limitations at Different Salt Ratios on Growth and Biochemical Composition of Tetraselmis suecica (Chlorodendrophyceae)

Phylogeny and fatty acid profiles of Aliinostoc vietnamicum sp. nov. (cyanobacteria) from the soils of Vietnam

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