TY  - JOUR
AU  - Stamenković, Marija
AU  - Steinwall, Elin
AU  - Nilsson, Anders K.
AU  - Wulff, Angela
PY  - 2020
UR  - https://www.sciencedirect.com/science/article/pii/S0031942219304558?via%3Dihub
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/3529
AB  - Desmids (Zygnematophyceae) are a group of poorly studied green microalgae. The aim of the present study was to identify fatty acids (FAs) that could be used as biomarkers in desmids in general, and to determine FAs as traits within different ecophysiological desmid groups. FA profiles of 29 desmid strains were determined and analysed with respect to their geographic origin, trophic preference and age of cultivation. It appeared that merely FAs present in relatively large proportions such as palmitic, linoleic, α-linolenic and hexadecatrienoic acids could be used as biomarkers for reliable categorization of this microalgal group. Linear discriminant analysis applied to three a priori defined groups of desmids, revealed clear strain-specific characteristics regarding FA distribution, influenced by climate and trophic conditions at the source sites as well as by the age of culture and growth phase. Accordingly, when considering FAs for the determination of lower taxonomic ranks we recommend using the term "trait" instead of "biomarker", as the latter designates unchangeable "fingerprint" of a specific taxon. Furthermore, despite that desmids were regarded as microalgae having stable genomes, long-term cultivation appeared to cause modifications in FA metabolic pathways, evident as a larger proportion of stearidonic acid in desmid strains cultivated over extensive time periods (>35 years).
T2  - Phytochemistry
T1  - Fatty acids as chemotaxonomic and ecophysiological traits in green microalgae (desmids, Zygnematophyceae, Streptophyta): A discriminant analysis approach.
VL  - 170
DO  - 10.1016/j.phytochem.2019.112200
SP  - 112200
ER  - 

@article{
author = "Stamenković, Marija and Steinwall, Elin and Nilsson, Anders K. and Wulff, Angela",
year = "2020",
abstract = "Desmids (Zygnematophyceae) are a group of poorly studied green microalgae. The aim of the present study was to identify fatty acids (FAs) that could be used as biomarkers in desmids in general, and to determine FAs as traits within different ecophysiological desmid groups. FA profiles of 29 desmid strains were determined and analysed with respect to their geographic origin, trophic preference and age of cultivation. It appeared that merely FAs present in relatively large proportions such as palmitic, linoleic, α-linolenic and hexadecatrienoic acids could be used as biomarkers for reliable categorization of this microalgal group. Linear discriminant analysis applied to three a priori defined groups of desmids, revealed clear strain-specific characteristics regarding FA distribution, influenced by climate and trophic conditions at the source sites as well as by the age of culture and growth phase. Accordingly, when considering FAs for the determination of lower taxonomic ranks we recommend using the term "trait" instead of "biomarker", as the latter designates unchangeable "fingerprint" of a specific taxon. Furthermore, despite that desmids were regarded as microalgae having stable genomes, long-term cultivation appeared to cause modifications in FA metabolic pathways, evident as a larger proportion of stearidonic acid in desmid strains cultivated over extensive time periods (>35 years).",
journal = "Phytochemistry",
title = "Fatty acids as chemotaxonomic and ecophysiological traits in green microalgae (desmids, Zygnematophyceae, Streptophyta): A discriminant analysis approach.",
volume = "170",
doi = "10.1016/j.phytochem.2019.112200",
pages = "112200"
}

Stamenković, M., Steinwall, E., Nilsson, A. K.,& Wulff, A.. (2020). Fatty acids as chemotaxonomic and ecophysiological traits in green microalgae (desmids, Zygnematophyceae, Streptophyta): A discriminant analysis approach.. in Phytochemistry, 170, 112200.
https://doi.org/10.1016/j.phytochem.2019.112200

Stamenković M, Steinwall E, Nilsson AK, Wulff A. Fatty acids as chemotaxonomic and ecophysiological traits in green microalgae (desmids, Zygnematophyceae, Streptophyta): A discriminant analysis approach.. in Phytochemistry. 2020;170:112200.
doi:10.1016/j.phytochem.2019.112200 .

Stamenković, Marija, Steinwall, Elin, Nilsson, Anders K., Wulff, Angela, "Fatty acids as chemotaxonomic and ecophysiological traits in green microalgae (desmids, Zygnematophyceae, Streptophyta): A discriminant analysis approach." in Phytochemistry, 170 (2020):112200,
https://doi.org/10.1016/j.phytochem.2019.112200 . .

TY  - JOUR
AU  - Stamenković, Marija
AU  - Steinwall, Elin
AU  - Nilsson, Anders K.
AU  - Wulff, Angela
PY  - 2018
UR  - http://link.springer.com/10.1007/s10811-018-1598-8
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/3129
AB  - This study aimed to investigate fatty acid content and productivity of the insufficiently investigated group of freshwater microalgae—desmids (Zygnematophyceae, Streptophyta)—and to estimate their commercial potential. A total of 29 desmid strains of various environmental preferences were grown in standard cultivation conditions to assess fatty acid concentration and composition and biomass productivity during the growth phases. Six desmid strains belonging to Cosmarium crenatum var. boldtianum, C. meneghinii, C. regnellii var. pseudoregnellii, C. leave, Staurastrum boreale, and S. punctulatum had distinctly high total fatty acid contents (> 200 mg g−1 dry weight), among which C. crenatum had by far the highest average of total fatty acids (308.1 mg g−1 dry weight). Despite that desmids were grown in a medium which was not enriched with nutrients and CO2, these six strains achieved moderate biomass productivity (up to 0.14 g dry weight L−1 day−1), while the fatty acid productivity was in the range 8–11.1 mg L−1 day−1. The relatively high amounts of linoleic and palmitic acids in C. crenatum var. boldtianum and C. meneghinii were comparable to those found in several commercially grown plants, indicating that fatty acid extracts of these desmids could be utilized in cosmetics, pharmacy, medicine, or in additional industrial applications. On the other hand, the high proportion of oleic acid in a new isolate of Staurastrum boreale, along with its relatively high biomass productivity and cell size, pointed that this strain might be used for further investigations regarding biodiesel production.
T2  - Journal of Applied Phycology
T1  - Desmids (Zygnematophyceae, Streptophyta) as a promising freshwater microalgal group for the fatty acid production: results of a screening study
DO  - 10.1007/s10811-018-1598-8
ER  - 

@article{
author = "Stamenković, Marija and Steinwall, Elin and Nilsson, Anders K. and Wulff, Angela",
year = "2018",
abstract = "This study aimed to investigate fatty acid content and productivity of the insufficiently investigated group of freshwater microalgae—desmids (Zygnematophyceae, Streptophyta)—and to estimate their commercial potential. A total of 29 desmid strains of various environmental preferences were grown in standard cultivation conditions to assess fatty acid concentration and composition and biomass productivity during the growth phases. Six desmid strains belonging to Cosmarium crenatum var. boldtianum, C. meneghinii, C. regnellii var. pseudoregnellii, C. leave, Staurastrum boreale, and S. punctulatum had distinctly high total fatty acid contents (> 200 mg g−1 dry weight), among which C. crenatum had by far the highest average of total fatty acids (308.1 mg g−1 dry weight). Despite that desmids were grown in a medium which was not enriched with nutrients and CO2, these six strains achieved moderate biomass productivity (up to 0.14 g dry weight L−1 day−1), while the fatty acid productivity was in the range 8–11.1 mg L−1 day−1. The relatively high amounts of linoleic and palmitic acids in C. crenatum var. boldtianum and C. meneghinii were comparable to those found in several commercially grown plants, indicating that fatty acid extracts of these desmids could be utilized in cosmetics, pharmacy, medicine, or in additional industrial applications. On the other hand, the high proportion of oleic acid in a new isolate of Staurastrum boreale, along with its relatively high biomass productivity and cell size, pointed that this strain might be used for further investigations regarding biodiesel production.",
journal = "Journal of Applied Phycology",
title = "Desmids (Zygnematophyceae, Streptophyta) as a promising freshwater microalgal group for the fatty acid production: results of a screening study",
doi = "10.1007/s10811-018-1598-8"
}

Stamenković, M., Steinwall, E., Nilsson, A. K.,& Wulff, A.. (2018). Desmids (Zygnematophyceae, Streptophyta) as a promising freshwater microalgal group for the fatty acid production: results of a screening study. in Journal of Applied Phycology.
https://doi.org/10.1007/s10811-018-1598-8

Stamenković M, Steinwall E, Nilsson AK, Wulff A. Desmids (Zygnematophyceae, Streptophyta) as a promising freshwater microalgal group for the fatty acid production: results of a screening study. in Journal of Applied Phycology. 2018;.
doi:10.1007/s10811-018-1598-8 .

Stamenković, Marija, Steinwall, Elin, Nilsson, Anders K., Wulff, Angela, "Desmids (Zygnematophyceae, Streptophyta) as a promising freshwater microalgal group for the fatty acid production: results of a screening study" in Journal of Applied Phycology (2018),
https://doi.org/10.1007/s10811-018-1598-8 . .