TY  - JOUR
AU  - De Tommasi, Edoardo
AU  - Rea, Ilaria
AU  - Ferrara, Maria Antonietta
AU  - De Stefano, Luca
AU  - De Stefano, Mario
AU  - Al-Handal, Adil Y.
AU  - Stamenković, Marija
AU  - Wulff, Angela
PY  - 2024
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/6625
AB  - Ordered, quasi-ordered, and even disordered nanostructures can be identified as constituent components of several protists, plants and animals, making possible an efficient manipulation of light for intra- and inter- species communication, camouflage, or for the enhancement of primary production. Diatoms are ubiquitous unicellular microalgae inhabiting all the aquatic environments on Earth. They developed, through tens of millions of years of evolution, ultrastructured silica cell walls, the frustules, able to handle optical radiation through multiple diffractive, refractive, and wave-guiding processes, possibly at the basis of their high photosynthetic efficiency. In this study, we employed a range of imaging, spectroscopic and numerical techniques (including transmission imaging, digital holography, photoluminescence spectroscopy, and numerical simulations based on wide-angle beam propagation method) to identify and describe different mechanisms by which Pleurosigma strigosum frustules can modulate optical radiation of different spectral content. Finally, we correlated the optical response of the frustule to the interaction with light in living, individual cells within their aquatic environment following various irradiation treatments. The obtained results demonstrate the favorable transmission of photosynthetic active radiation inside the cell compared to potentially detrimental ultraviolet radiation.
PB  - Springer Nature
T2  - Scientific Reports
T1  - Multiple-pathways light modulation in Pleurosigma strigosum bi-raphid diatom
VL  - 14
DO  - 10.1038/s41598-024-56206-y
SP  - 6476
ER  - 

@article{
author = "De Tommasi, Edoardo and Rea, Ilaria and Ferrara, Maria Antonietta and De Stefano, Luca and De Stefano, Mario and Al-Handal, Adil Y. and Stamenković, Marija and Wulff, Angela",
year = "2024",
abstract = "Ordered, quasi-ordered, and even disordered nanostructures can be identified as constituent components of several protists, plants and animals, making possible an efficient manipulation of light for intra- and inter- species communication, camouflage, or for the enhancement of primary production. Diatoms are ubiquitous unicellular microalgae inhabiting all the aquatic environments on Earth. They developed, through tens of millions of years of evolution, ultrastructured silica cell walls, the frustules, able to handle optical radiation through multiple diffractive, refractive, and wave-guiding processes, possibly at the basis of their high photosynthetic efficiency. In this study, we employed a range of imaging, spectroscopic and numerical techniques (including transmission imaging, digital holography, photoluminescence spectroscopy, and numerical simulations based on wide-angle beam propagation method) to identify and describe different mechanisms by which Pleurosigma strigosum frustules can modulate optical radiation of different spectral content. Finally, we correlated the optical response of the frustule to the interaction with light in living, individual cells within their aquatic environment following various irradiation treatments. The obtained results demonstrate the favorable transmission of photosynthetic active radiation inside the cell compared to potentially detrimental ultraviolet radiation.",
publisher = "Springer Nature",
journal = "Scientific Reports",
title = "Multiple-pathways light modulation in Pleurosigma strigosum bi-raphid diatom",
volume = "14",
doi = "10.1038/s41598-024-56206-y",
pages = "6476"
}

De Tommasi, E., Rea, I., Ferrara, M. A., De Stefano, L., De Stefano, M., Al-Handal, A. Y., Stamenković, M.,& Wulff, A.. (2024). Multiple-pathways light modulation in Pleurosigma strigosum bi-raphid diatom. in Scientific Reports
Springer Nature., 14, 6476.
https://doi.org/10.1038/s41598-024-56206-y

De Tommasi E, Rea I, Ferrara MA, De Stefano L, De Stefano M, Al-Handal AY, Stamenković M, Wulff A. Multiple-pathways light modulation in Pleurosigma strigosum bi-raphid diatom. in Scientific Reports. 2024;14:6476.
doi:10.1038/s41598-024-56206-y .

De Tommasi, Edoardo, Rea, Ilaria, Ferrara, Maria Antonietta, De Stefano, Luca, De Stefano, Mario, Al-Handal, Adil Y., Stamenković, Marija, Wulff, Angela, "Multiple-pathways light modulation in Pleurosigma strigosum bi-raphid diatom" in Scientific Reports, 14 (2024):6476,
https://doi.org/10.1038/s41598-024-56206-y . .

TY  - CHAP
AU  - Stamenković, Marija
AU  - Pavlović, Pavle
PY  - 2023
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/6201
AB  - The conjugating algae (Zygnematophyceae, Streptophyta) have been primarily used as a model and test organisms for the study of many biological processes. Recent investigations demonstrated that they might have fair potential to be used for the commercial production of various metabolites as well as for the bioremediation of wastewaters. Due to the adaptation to high light intensities, Zygnematophyceae typically have high amounts of photosynthetic pigments, among which zeaxanthin and lutein have a precious role in medicine and agriculture. Furthermore, under certain conditions, some conjugating algae may produce astaxanthin, gallotannins, heat shock proteins (hsps), and antioxidant enzymes, which have nutraceutical and pharmaceutical significance. High amounts of several fatty acids (FAs), such as palmitic, oleic, linoleic, and α-linolenic acid, have been recorded in desmids (order Desmidiales), and these FAs may have an important role in cosmetics and industry as well as for biodiesel production. Some conjugating algae (e.g., Spirogyra sp.) have high biomass productivity and may accumulate large amounts of carbohydrates, 2representing a suitable substrate for bioethanol and hydrogen production. Furthermore, fresh and dried biomass of several representatives of the families Desmidiaceae and Zygnemataceae appeared efficient substrate for the biosorption of metals (As, Cd, Pb, Cu, Mn, Zn, Cr, Sr, Ba, Pb, Ni, and Hg), toxic substances, remedy residues, and nutrients, thus rendering this group interesting for the purification of various types of agricultural and industrial wastewaters.
PB  - New York: Apple Academic Press
T2  - Microalgal Biotechnology: Bioprospecting Microalgae for Functional Metabolites towards Commercial and Sustainable Applications
T1  - Applied Studies on Desmids and Other Conjugating Algae (Zygnematophyceae, Streptophyta)
DO  - 10.1201/9781003332251-1
SP  - 1
EP  - 43
ER  - 

@inbook{
author = "Stamenković, Marija and Pavlović, Pavle",
year = "2023",
abstract = "The conjugating algae (Zygnematophyceae, Streptophyta) have been primarily used as a model and test organisms for the study of many biological processes. Recent investigations demonstrated that they might have fair potential to be used for the commercial production of various metabolites as well as for the bioremediation of wastewaters. Due to the adaptation to high light intensities, Zygnematophyceae typically have high amounts of photosynthetic pigments, among which zeaxanthin and lutein have a precious role in medicine and agriculture. Furthermore, under certain conditions, some conjugating algae may produce astaxanthin, gallotannins, heat shock proteins (hsps), and antioxidant enzymes, which have nutraceutical and pharmaceutical significance. High amounts of several fatty acids (FAs), such as palmitic, oleic, linoleic, and α-linolenic acid, have been recorded in desmids (order Desmidiales), and these FAs may have an important role in cosmetics and industry as well as for biodiesel production. Some conjugating algae (e.g., Spirogyra sp.) have high biomass productivity and may accumulate large amounts of carbohydrates, 2representing a suitable substrate for bioethanol and hydrogen production. Furthermore, fresh and dried biomass of several representatives of the families Desmidiaceae and Zygnemataceae appeared efficient substrate for the biosorption of metals (As, Cd, Pb, Cu, Mn, Zn, Cr, Sr, Ba, Pb, Ni, and Hg), toxic substances, remedy residues, and nutrients, thus rendering this group interesting for the purification of various types of agricultural and industrial wastewaters.",
publisher = "New York: Apple Academic Press",
journal = "Microalgal Biotechnology: Bioprospecting Microalgae for Functional Metabolites towards Commercial and Sustainable Applications",
booktitle = "Applied Studies on Desmids and Other Conjugating Algae (Zygnematophyceae, Streptophyta)",
doi = "10.1201/9781003332251-1",
pages = "1-43"
}

Stamenković, M.,& Pavlović, P.. (2023). Applied Studies on Desmids and Other Conjugating Algae (Zygnematophyceae, Streptophyta). in Microalgal Biotechnology: Bioprospecting Microalgae for Functional Metabolites towards Commercial and Sustainable Applications
New York: Apple Academic Press., 1-43.
https://doi.org/10.1201/9781003332251-1

Stamenković M, Pavlović P. Applied Studies on Desmids and Other Conjugating Algae (Zygnematophyceae, Streptophyta). in Microalgal Biotechnology: Bioprospecting Microalgae for Functional Metabolites towards Commercial and Sustainable Applications. 2023;:1-43.
doi:10.1201/9781003332251-1 .

Stamenković, Marija, Pavlović, Pavle, "Applied Studies on Desmids and Other Conjugating Algae (Zygnematophyceae, Streptophyta)" in Microalgal Biotechnology: Bioprospecting Microalgae for Functional Metabolites towards Commercial and Sustainable Applications (2023):1-43,
https://doi.org/10.1201/9781003332251-1 . .

TY  - CONF
AU  - De Tommasi, Edoardo
AU  - Rea, Ilaria
AU  - Ferrara, Maria Antonietta
AU  - De Stefano, Luca
AU  - De Stefano, Mario
AU  - Al- Handal, Adil Yousif
AU  - Stamenković, Marija
AU  - Wulff, Angela
PY  - 2021
UR  - https://www.epj-conferences.org/articles/epjconf/abs/2021/09/contents/contents.html
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/6798
AB  - Marine and freshwater diatoms contribute massively to global primary production with significant
effects on carbon, oxygen, and silica cycles. Diatoms are enclosed in a micro- and nano- patterned silica shell,
the frustule, whose functions comprise mechanical stability, sorting of nutrients from harmful agents, and, as
recently shown in several studies, optimization of light harvesting. In the present work several numerical and
experimental techniques including wide-angle beam propagation method, transmission imaging, digital
holography, fluorescence imaging, and photoluminescence spectroscopy have been exploited to study the
interaction of light with both bare frustules and living cells of the benthic diatom Ctenophora pulchella, in
different spectral ranges and with particular focus on UV radiation due to its potential detrimental effects on
living organisms. C. pulchella is characterized indeed by a noticeable tolerance towards UV irradiation despite
the lack of specific UV-absorbing compounds. The main aim of this work is to shed light onto the possible
mechanisms by which the frustule is able to protect the living cell versus exposure to short-wavelength optical
radiation.
PB  - Paris: EDP Sciences - Web of Conferences
C3  - The European Optical Society Annual Meeting: EOSAM; 2021 Sep 3-17; Rome, Italy
T1  - Underwater light manipulation by the benthic diatom Ctenophora pulchella: basic principles and functional meaning
VL  - 255
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_6798
ER  - 

@conference{
author = "De Tommasi, Edoardo and Rea, Ilaria and Ferrara, Maria Antonietta and De Stefano, Luca and De Stefano, Mario and Al- Handal, Adil Yousif and Stamenković, Marija and Wulff, Angela",
year = "2021",
abstract = "Marine and freshwater diatoms contribute massively to global primary production with significant
effects on carbon, oxygen, and silica cycles. Diatoms are enclosed in a micro- and nano- patterned silica shell,
the frustule, whose functions comprise mechanical stability, sorting of nutrients from harmful agents, and, as
recently shown in several studies, optimization of light harvesting. In the present work several numerical and
experimental techniques including wide-angle beam propagation method, transmission imaging, digital
holography, fluorescence imaging, and photoluminescence spectroscopy have been exploited to study the
interaction of light with both bare frustules and living cells of the benthic diatom Ctenophora pulchella, in
different spectral ranges and with particular focus on UV radiation due to its potential detrimental effects on
living organisms. C. pulchella is characterized indeed by a noticeable tolerance towards UV irradiation despite
the lack of specific UV-absorbing compounds. The main aim of this work is to shed light onto the possible
mechanisms by which the frustule is able to protect the living cell versus exposure to short-wavelength optical
radiation.",
publisher = "Paris: EDP Sciences - Web of Conferences",
journal = "The European Optical Society Annual Meeting: EOSAM; 2021 Sep 3-17; Rome, Italy",
title = "Underwater light manipulation by the benthic diatom Ctenophora pulchella: basic principles and functional meaning",
volume = "255",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_6798"
}

De Tommasi, E., Rea, I., Ferrara, M. A., De Stefano, L., De Stefano, M., Al- Handal, A. Y., Stamenković, M.,& Wulff, A.. (2021). Underwater light manipulation by the benthic diatom Ctenophora pulchella: basic principles and functional meaning. in The European Optical Society Annual Meeting: EOSAM; 2021 Sep 3-17; Rome, Italy
Paris: EDP Sciences - Web of Conferences., 255.
https://hdl.handle.net/21.15107/rcub_ibiss_6798

De Tommasi E, Rea I, Ferrara MA, De Stefano L, De Stefano M, Al- Handal AY, Stamenković M, Wulff A. Underwater light manipulation by the benthic diatom Ctenophora pulchella: basic principles and functional meaning. in The European Optical Society Annual Meeting: EOSAM; 2021 Sep 3-17; Rome, Italy. 2021;255.
https://hdl.handle.net/21.15107/rcub_ibiss_6798 .

De Tommasi, Edoardo, Rea, Ilaria, Ferrara, Maria Antonietta, De Stefano, Luca, De Stefano, Mario, Al- Handal, Adil Yousif, Stamenković, Marija, Wulff, Angela, "Underwater light manipulation by the benthic diatom Ctenophora pulchella: basic principles and functional meaning" in The European Optical Society Annual Meeting: EOSAM; 2021 Sep 3-17; Rome, Italy, 255 (2021),
https://hdl.handle.net/21.15107/rcub_ibiss_6798 .

TY  - JOUR
AU  - De Tommasi, Edoardo
AU  - Rea, Ilaria
AU  - Ferrara, Maria Antonietta
AU  - De Stefano, Luca
AU  - De Stefano, Mario
AU  - Al-Handal, Adil Y.
AU  - Stamenković, Marija
AU  - Wulff, Angela
PY  - 2021
UR  - https://www.mdpi.com/2079-4991/11/11/2855
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/4652
AB  - Several species of diatoms, unicellular microalgae which constitute the main component of phytoplankton, are characterized by an impressive photosynthetic efficiency while presenting a noticeable tolerance versus exposure to detrimental UV radiation (UVR). In particular, the growth rate of the araphid diatom Ctenophora pulchella is not significantly affected by harsh treatments with UVR, even in absence of detectable, specific UV-absorbing pigments and even if it is not able to avoid high UV exposure by motility. In this work we applied a multi-disciplinary approach involving numerical computation, photonics, and biological parameters in order to investigate the possible role of the frustule, micro- and nano-patterned silica shell which encloses the cell, in the ability of C. pulchella to efficiently collect photosynthetic active radiation (PAR) and to simultaneously screen the protoplasm from UVR. The characterization of the photonic properties of the frustule has been accompanied by in vivo experiments conducted in water in order to investigate its function as optical coupler between light and plastids.
PB  - Basel: MDPI
T2  - Nanomaterials
T1  - Underwater Light Manipulation by the Benthic Diatom Ctenophora pulchella: From PAR Efficient Collection to UVR Screening
IS  - 11
VL  - 11
DO  - 10.3390/nano11112855
SP  - 2855
ER  - 

@article{
author = "De Tommasi, Edoardo and Rea, Ilaria and Ferrara, Maria Antonietta and De Stefano, Luca and De Stefano, Mario and Al-Handal, Adil Y. and Stamenković, Marija and Wulff, Angela",
year = "2021",
abstract = "Several species of diatoms, unicellular microalgae which constitute the main component of phytoplankton, are characterized by an impressive photosynthetic efficiency while presenting a noticeable tolerance versus exposure to detrimental UV radiation (UVR). In particular, the growth rate of the araphid diatom Ctenophora pulchella is not significantly affected by harsh treatments with UVR, even in absence of detectable, specific UV-absorbing pigments and even if it is not able to avoid high UV exposure by motility. In this work we applied a multi-disciplinary approach involving numerical computation, photonics, and biological parameters in order to investigate the possible role of the frustule, micro- and nano-patterned silica shell which encloses the cell, in the ability of C. pulchella to efficiently collect photosynthetic active radiation (PAR) and to simultaneously screen the protoplasm from UVR. The characterization of the photonic properties of the frustule has been accompanied by in vivo experiments conducted in water in order to investigate its function as optical coupler between light and plastids.",
publisher = "Basel: MDPI",
journal = "Nanomaterials",
title = "Underwater Light Manipulation by the Benthic Diatom Ctenophora pulchella: From PAR Efficient Collection to UVR Screening",
number = "11",
volume = "11",
doi = "10.3390/nano11112855",
pages = "2855"
}

De Tommasi, E., Rea, I., Ferrara, M. A., De Stefano, L., De Stefano, M., Al-Handal, A. Y., Stamenković, M.,& Wulff, A.. (2021). Underwater Light Manipulation by the Benthic Diatom Ctenophora pulchella: From PAR Efficient Collection to UVR Screening. in Nanomaterials
Basel: MDPI., 11(11), 2855.
https://doi.org/10.3390/nano11112855

De Tommasi E, Rea I, Ferrara MA, De Stefano L, De Stefano M, Al-Handal AY, Stamenković M, Wulff A. Underwater Light Manipulation by the Benthic Diatom Ctenophora pulchella: From PAR Efficient Collection to UVR Screening. in Nanomaterials. 2021;11(11):2855.
doi:10.3390/nano11112855 .

De Tommasi, Edoardo, Rea, Ilaria, Ferrara, Maria Antonietta, De Stefano, Luca, De Stefano, Mario, Al-Handal, Adil Y., Stamenković, Marija, Wulff, Angela, "Underwater Light Manipulation by the Benthic Diatom Ctenophora pulchella: From PAR Efficient Collection to UVR Screening" in Nanomaterials, 11, no. 11 (2021):2855,
https://doi.org/10.3390/nano11112855 . .

TY  - CONF
AU  - Stamenković, Marija
AU  - Steinwall, Elin
AU  - Nilsson, Anders
AU  - Wulff, Angela
PY  - 2018
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/6788
AB  - Microalgae have received a lot of attention as a source of high-lipid feedstock to be used for
the production of renewable energy in the form of biodiesel or other types of fuel, such as bioethanol,
biobutanol and biogas. In addition, many microalgal strains produce significant amounts
of essential fatty acids (such as ω3- and ω6-polyunsaturated fatty acids) which may have large
importance in nutrition, cosmetics, and pharmacy. Recent investigations demonstrated that a
group of freshwater green microalgae – desmids (Zygnematophyceae, Streptophyta) might have a
significant potential for the commercial fatty acid production. Over 20 desmid strains were grown
in standard cultivation conditions to assess their biomass and fatty acid content and productivities
during the growth phases. The desmid strains investigated demonstrated the moderate values of
biomass productivity (around 0.08 g CDW L-1 d-1), being the highest in Staurastrum boreale (0.14
g CDW L-1 d-1). The six desmid strains belonging to C. crenatum var. boldtianum, C. meneghinii, C.
regnellii var. pseudoregnellii, C. leave, Staurastrum boreale and S. punctulatum had the exceedingly
high total fatty acid contents (>200 mg g-1 CDW). The high amounts of linoleic and palmitic acids,
and the low amount of oleic acid influenced the characteristics of desmid biodiesel, which partly
satisfied the demanded standards for biodiesel. Hence, the improvement of the desmid biodiesel
is recommended by the enhancement of the desmid growth conditions and/or by the partial
hydrogenation. In addition, palmitic, linoleic and hexadecadienoic acids from desmid extracts can
be utilized in cosmetics, pharmacy, medicine, and in industry.
PB  - Belgrade: Serbian Plant Physiology Society; Institute for Biological Research "Siniša Stanković"; Faculty of Biology
C3  - Book of abstracts. 3rd International Conference on Plant Biology (22nd SPPS Meeting); 2018 Jun 9-12; Belgrade, Serbia
T1  - Strains of green microalgae as a promising feedstock for commercial fatty acid production
SP  - 148
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_6788
ER  - 

@conference{
author = "Stamenković, Marija and Steinwall, Elin and Nilsson, Anders and Wulff, Angela",
year = "2018",
abstract = "Microalgae have received a lot of attention as a source of high-lipid feedstock to be used for
the production of renewable energy in the form of biodiesel or other types of fuel, such as bioethanol,
biobutanol and biogas. In addition, many microalgal strains produce significant amounts
of essential fatty acids (such as ω3- and ω6-polyunsaturated fatty acids) which may have large
importance in nutrition, cosmetics, and pharmacy. Recent investigations demonstrated that a
group of freshwater green microalgae – desmids (Zygnematophyceae, Streptophyta) might have a
significant potential for the commercial fatty acid production. Over 20 desmid strains were grown
in standard cultivation conditions to assess their biomass and fatty acid content and productivities
during the growth phases. The desmid strains investigated demonstrated the moderate values of
biomass productivity (around 0.08 g CDW L-1 d-1), being the highest in Staurastrum boreale (0.14
g CDW L-1 d-1). The six desmid strains belonging to C. crenatum var. boldtianum, C. meneghinii, C.
regnellii var. pseudoregnellii, C. leave, Staurastrum boreale and S. punctulatum had the exceedingly
high total fatty acid contents (>200 mg g-1 CDW). The high amounts of linoleic and palmitic acids,
and the low amount of oleic acid influenced the characteristics of desmid biodiesel, which partly
satisfied the demanded standards for biodiesel. Hence, the improvement of the desmid biodiesel
is recommended by the enhancement of the desmid growth conditions and/or by the partial
hydrogenation. In addition, palmitic, linoleic and hexadecadienoic acids from desmid extracts can
be utilized in cosmetics, pharmacy, medicine, and in industry.",
publisher = "Belgrade: Serbian Plant Physiology Society; Institute for Biological Research "Siniša Stanković"; Faculty of Biology",
journal = "Book of abstracts. 3rd International Conference on Plant Biology (22nd SPPS Meeting); 2018 Jun 9-12; Belgrade, Serbia",
title = "Strains of green microalgae as a promising feedstock for commercial fatty acid production",
pages = "148",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_6788"
}

Stamenković, M., Steinwall, E., Nilsson, A.,& Wulff, A.. (2018). Strains of green microalgae as a promising feedstock for commercial fatty acid production. in Book of abstracts. 3rd International Conference on Plant Biology (22nd SPPS Meeting); 2018 Jun 9-12; Belgrade, Serbia
Belgrade: Serbian Plant Physiology Society; Institute for Biological Research "Siniša Stanković"; Faculty of Biology., 148.
https://hdl.handle.net/21.15107/rcub_ibiss_6788

Stamenković M, Steinwall E, Nilsson A, Wulff A. Strains of green microalgae as a promising feedstock for commercial fatty acid production. in Book of abstracts. 3rd International Conference on Plant Biology (22nd SPPS Meeting); 2018 Jun 9-12; Belgrade, Serbia. 2018;:148.
https://hdl.handle.net/21.15107/rcub_ibiss_6788 .

Stamenković, Marija, Steinwall, Elin, Nilsson, Anders, Wulff, Angela, "Strains of green microalgae as a promising feedstock for commercial fatty acid production" in Book of abstracts. 3rd International Conference on Plant Biology (22nd SPPS Meeting); 2018 Jun 9-12; Belgrade, Serbia (2018):148,
https://hdl.handle.net/21.15107/rcub_ibiss_6788 .

TY  - CONF
AU  - Stamenković, Marija
AU  - Steinwall, Elin
AU  - Nilsson, Anders K.
AU  - Wulff, Angela
PY  - 2018
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/6787
AB  - Mikroalge su dobile veliki interes u istraživanju jer predstavljaju biomasu bogatu lipidima, koja može da se iskoristi kao dodatak ishrani i za proizvodnju biodizela. Dva soja dezmidnih mikroalgi, Staurastrum boreale No. 595 izolovan 1984. godine u Austriji i No. 631 izolovan 2014. sa lokaliteta u Srbiji, su uzgajana u standardnim laboratorijskim uslovima kako bi se procenile njihove fiziološke razlike (merenjem fotosinteze PAM fluorometrom, stope rasta i produkcije biomase), i da bi se odredio potencijal produkcije masnih kiselina gasnom hromatografijom. Istraživanje je pokazalo da noviji soj S. boreale ima veći fotosintetski prinos (Fv/Fm=0,71) u odnosu na stariji soj (Fv/Fm=0,679) kao i značajno veću maksimalnu stopu rasta (0,432 d-1, prema 0,311 d-1). Intenzivniji fotosintetski prinos je rezultovao u većoj biomasi novog soja S. boreale na kraju stacionarne faze rasta (1,55 g L-1), kao i u većoj produkciji biomase (0,14 g suve mase L-1 d-1), dok je stariji soj imao produkciju biomase svega 0,049 g suve mase L-1 d-1. Soj S. boreale izolovan sa lokaliteta u Srbiji se odlikovao izuzetno visokim sadržajem ukupnih masnih kiselina (231,5 mg g-1 suve mase) čime je tri puta prevazišao količinu određenu za stariji soj (73,8 mg g-1 suve mase). Uzimajući u obzir da je produkcija masnih kiselina takođe bila znatno veća kod novog soja S. boreale (8,2 mg L-1 d-1, naspram 0,69 mg L-1 d-1) ovaj soj se proporučuje za dalja istraživanja sa ciljem komercijalne produkcije algalnih lipida.
PB  - Belgrade: Serbian Biological Society
C3  - Drugi kongres biologa Srbije; 2018 Sep 25-30; Kladovo, Srbija
T1  - Fiziološke razlike između dva soja zelenih mikroalgi i njihov potencijal za produkciju masnih kiselina
SP  - 205
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_6787
ER  - 

@conference{
author = "Stamenković, Marija and Steinwall, Elin and Nilsson, Anders K. and Wulff, Angela",
year = "2018",
abstract = "Mikroalge su dobile veliki interes u istraživanju jer predstavljaju biomasu bogatu lipidima, koja može da se iskoristi kao dodatak ishrani i za proizvodnju biodizela. Dva soja dezmidnih mikroalgi, Staurastrum boreale No. 595 izolovan 1984. godine u Austriji i No. 631 izolovan 2014. sa lokaliteta u Srbiji, su uzgajana u standardnim laboratorijskim uslovima kako bi se procenile njihove fiziološke razlike (merenjem fotosinteze PAM fluorometrom, stope rasta i produkcije biomase), i da bi se odredio potencijal produkcije masnih kiselina gasnom hromatografijom. Istraživanje je pokazalo da noviji soj S. boreale ima veći fotosintetski prinos (Fv/Fm=0,71) u odnosu na stariji soj (Fv/Fm=0,679) kao i značajno veću maksimalnu stopu rasta (0,432 d-1, prema 0,311 d-1). Intenzivniji fotosintetski prinos je rezultovao u većoj biomasi novog soja S. boreale na kraju stacionarne faze rasta (1,55 g L-1), kao i u većoj produkciji biomase (0,14 g suve mase L-1 d-1), dok je stariji soj imao produkciju biomase svega 0,049 g suve mase L-1 d-1. Soj S. boreale izolovan sa lokaliteta u Srbiji se odlikovao izuzetno visokim sadržajem ukupnih masnih kiselina (231,5 mg g-1 suve mase) čime je tri puta prevazišao količinu određenu za stariji soj (73,8 mg g-1 suve mase). Uzimajući u obzir da je produkcija masnih kiselina takođe bila znatno veća kod novog soja S. boreale (8,2 mg L-1 d-1, naspram 0,69 mg L-1 d-1) ovaj soj se proporučuje za dalja istraživanja sa ciljem komercijalne produkcije algalnih lipida.",
publisher = "Belgrade: Serbian Biological Society",
journal = "Drugi kongres biologa Srbije; 2018 Sep 25-30; Kladovo, Srbija",
title = "Fiziološke razlike između dva soja zelenih mikroalgi i njihov potencijal za produkciju masnih kiselina",
pages = "205",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_6787"
}

Stamenković, M., Steinwall, E., Nilsson, A. K.,& Wulff, A.. (2018). Fiziološke razlike između dva soja zelenih mikroalgi i njihov potencijal za produkciju masnih kiselina. in Drugi kongres biologa Srbije; 2018 Sep 25-30; Kladovo, Srbija
Belgrade: Serbian Biological Society., 205.
https://hdl.handle.net/21.15107/rcub_ibiss_6787

Stamenković M, Steinwall E, Nilsson AK, Wulff A. Fiziološke razlike između dva soja zelenih mikroalgi i njihov potencijal za produkciju masnih kiselina. in Drugi kongres biologa Srbije; 2018 Sep 25-30; Kladovo, Srbija. 2018;:205.
https://hdl.handle.net/21.15107/rcub_ibiss_6787 .

Stamenković, Marija, Steinwall, Elin, Nilsson, Anders K., Wulff, Angela, "Fiziološke razlike između dva soja zelenih mikroalgi i njihov potencijal za produkciju masnih kiselina" in Drugi kongres biologa Srbije; 2018 Sep 25-30; Kladovo, Srbija (2018):205,
https://hdl.handle.net/21.15107/rcub_ibiss_6787 .

TY  - CONF
AU  - Stamenković, Marija
AU  - Bischof, Kai
AU  - Hanelt, Dieter
PY  - 2017
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/6789
AB  - We examined the influence of irradiance on protection strategies
of four microalgal strain belonging to the genus Cosmarium
(Zygnematophyceae, Streptophyta), which were isolated from
various climatic zones and cultured long term (>15 years). The
photosynthetic behaviour and composition of photosynthetic
pigments of the Cosmarium strains were examined under low,
moderate and photoinhibitory white light by means of PAM
fluorometry, and high-performance liquid chromatography.
Generally, the Cosmarium strains displayed the photosynthetic
performance and pigment composition corresponding to that of
high-light adapted plants and algae. Yet, all the Cosmarium strains
demonstrated physiological responses that were consistent with
the light intensity prevailing at their source location as concluded
from chlorophyll fluorescence and changes of pigment composition,
confirming that these responses are genetically preserved.
Addition of inhibitors of chloroplast-encoded protein synthesis
(chloramphenicol and streptomycin) and violaxanthin de-epoxidase
(dithiothreitol) indicated that the Cosmarium strains developed
“sun- or shade-plant” protection strategies, in accordance with
the climate at their sampling sites. Strikingly, the typical arctic
taxon, C. crenatum var. boldtianum, displayed the incomplete
violaxanthin cycle yielding an accumulation of antheraxanthin
during high light stress, which is considered as an adaptation to
occasional high irradiances in the polar zone due to the albedo.
Antheraxanthin actively participated in the heat dissipation from
PSII centres in C. crenatum, as concluded from a significant positive
correlation between non-photochemical quenching and the quantity
of antheraxanthin. The species- and strain-specific ecophysiological
adaptations discussed in this study may enable desmids to cope with
PB  - Lancaster: The Society for Experimental Biology
C3  - Abstract Book: SEB Gothenburg 2017: Scientific Smärgåsbord; 2017 Jul 3-6; Gothenburg, Sweden
T1  - Species- and strain-specific strategies of microalgal strains (desmids, genus Cosmarium, Zygnematophyceae, Streptophyta) as protection against excessive photosynthetically active radiation
SP  - 59
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_6789
ER  - 

@conference{
author = "Stamenković, Marija and Bischof, Kai and Hanelt, Dieter",
year = "2017",
abstract = "We examined the influence of irradiance on protection strategies
of four microalgal strain belonging to the genus Cosmarium
(Zygnematophyceae, Streptophyta), which were isolated from
various climatic zones and cultured long term (>15 years). The
photosynthetic behaviour and composition of photosynthetic
pigments of the Cosmarium strains were examined under low,
moderate and photoinhibitory white light by means of PAM
fluorometry, and high-performance liquid chromatography.
Generally, the Cosmarium strains displayed the photosynthetic
performance and pigment composition corresponding to that of
high-light adapted plants and algae. Yet, all the Cosmarium strains
demonstrated physiological responses that were consistent with
the light intensity prevailing at their source location as concluded
from chlorophyll fluorescence and changes of pigment composition,
confirming that these responses are genetically preserved.
Addition of inhibitors of chloroplast-encoded protein synthesis
(chloramphenicol and streptomycin) and violaxanthin de-epoxidase
(dithiothreitol) indicated that the Cosmarium strains developed
“sun- or shade-plant” protection strategies, in accordance with
the climate at their sampling sites. Strikingly, the typical arctic
taxon, C. crenatum var. boldtianum, displayed the incomplete
violaxanthin cycle yielding an accumulation of antheraxanthin
during high light stress, which is considered as an adaptation to
occasional high irradiances in the polar zone due to the albedo.
Antheraxanthin actively participated in the heat dissipation from
PSII centres in C. crenatum, as concluded from a significant positive
correlation between non-photochemical quenching and the quantity
of antheraxanthin. The species- and strain-specific ecophysiological
adaptations discussed in this study may enable desmids to cope with",
publisher = "Lancaster: The Society for Experimental Biology",
journal = "Abstract Book: SEB Gothenburg 2017: Scientific Smärgåsbord; 2017 Jul 3-6; Gothenburg, Sweden",
title = "Species- and strain-specific strategies of microalgal strains (desmids, genus Cosmarium, Zygnematophyceae, Streptophyta) as protection against excessive photosynthetically active radiation",
pages = "59",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_6789"
}

Stamenković, M., Bischof, K.,& Hanelt, D.. (2017). Species- and strain-specific strategies of microalgal strains (desmids, genus Cosmarium, Zygnematophyceae, Streptophyta) as protection against excessive photosynthetically active radiation. in Abstract Book: SEB Gothenburg 2017: Scientific Smärgåsbord; 2017 Jul 3-6; Gothenburg, Sweden
Lancaster: The Society for Experimental Biology., 59.
https://hdl.handle.net/21.15107/rcub_ibiss_6789

Stamenković M, Bischof K, Hanelt D. Species- and strain-specific strategies of microalgal strains (desmids, genus Cosmarium, Zygnematophyceae, Streptophyta) as protection against excessive photosynthetically active radiation. in Abstract Book: SEB Gothenburg 2017: Scientific Smärgåsbord; 2017 Jul 3-6; Gothenburg, Sweden. 2017;:59.
https://hdl.handle.net/21.15107/rcub_ibiss_6789 .

Stamenković, Marija, Bischof, Kai, Hanelt, Dieter, "Species- and strain-specific strategies of microalgal strains (desmids, genus Cosmarium, Zygnematophyceae, Streptophyta) as protection against excessive photosynthetically active radiation" in Abstract Book: SEB Gothenburg 2017: Scientific Smärgåsbord; 2017 Jul 3-6; Gothenburg, Sweden (2017):59,
https://hdl.handle.net/21.15107/rcub_ibiss_6789 .

TY  - CONF
AU  - Hanelt, Dieter
AU  - Stamenković, Marija
PY  - 2017
UR  - https://www.tandfonline.com/doi/abs/10.2216/0031-8884-56.sp4.1
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/6786
PB  - International Phycological Society
C3  - Abstracts of papers to be presented at the 11th International Phycological Congress; 2017 Aug 13-19; Szczecin, Poland
T1  - UV radiation effects on algal community structure along a latitudinal gradient
DO  - 10.2216/0031-8884-56.sp4.1
SP  - 74
ER  - 

@conference{
author = "Hanelt, Dieter and Stamenković, Marija",
year = "2017",
publisher = "International Phycological Society",
journal = "Abstracts of papers to be presented at the 11th International Phycological Congress; 2017 Aug 13-19; Szczecin, Poland",
title = "UV radiation effects on algal community structure along a latitudinal gradient",
doi = "10.2216/0031-8884-56.sp4.1",
pages = "74"
}

Hanelt, D.,& Stamenković, M.. (2017). UV radiation effects on algal community structure along a latitudinal gradient. in Abstracts of papers to be presented at the 11th International Phycological Congress; 2017 Aug 13-19; Szczecin, Poland
International Phycological Society., 74.
https://doi.org/10.2216/0031-8884-56.sp4.1

Hanelt D, Stamenković M. UV radiation effects on algal community structure along a latitudinal gradient. in Abstracts of papers to be presented at the 11th International Phycological Congress; 2017 Aug 13-19; Szczecin, Poland. 2017;:74.
doi:10.2216/0031-8884-56.sp4.1 .

Hanelt, Dieter, Stamenković, Marija, "UV radiation effects on algal community structure along a latitudinal gradient" in Abstracts of papers to be presented at the 11th International Phycological Congress; 2017 Aug 13-19; Szczecin, Poland (2017):74,
https://doi.org/10.2216/0031-8884-56.sp4.1 . .