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  - 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 . .