Autor: Poronnik, Oksana - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Anatomical variations of Deschampsia antarctica É. Desv.plants from distant Antarctic regions, in vitro culture, and in relations to Deschampsia caespitosa (L.) P. Beauv.
Autorzy:: Nuzhyna, Nataliia
Parnikoza, Ivan
Poronnik, Oksana
Kozeretska, Iryna
Kunakh, Viktor
Powiązania:: https://bibliotekanauki.pl/articles/2041842.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Antarctic
Deschampsia antarctica
leaf anatomy
Deschampsia caespitosa
Źródło:: Polish Polar Research; 2019, 40, 4; 361-383
0138-0338
2081-8262
Pojawia się w:: Polish Polar Research
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Chromatographic and mass spectrometric analysis of secondary metabolites of Deschampsia antarctica from Galindez Island, Argentine Islands
Autorzy:: Ivannikov, Roman
Anishchenko, Viktor
Kuzema, Pavlo
Stavinskaya, Oksana
Laguta, Iryna
Poronnik, Oksana
Parnikoza, Ivan
Powiązania:: https://bibliotekanauki.pl/articles/16538469.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: West Antarctic
antarctic hairgrass
polyphenolic antioxidants
flavonoids
luteolin derivatives
Opis:: The aim of this work was to study the polyphenolic composition of Deschampsia antarctica È. Desv. plants grown at natural conditions on different locations on the Galindez Island, Argentine Islands, the maritime Antarctic. The plants were collected during the summer season of the 26th Ukrainian Antarctic Expedition (2020–2022). The extracts of 21 plants were obtained and the composition of the extracts was analyzed by means of high-performance liquid chromatography and matrix-assisted laser desorption/ionization mass spectrometry. The antioxidant properties of the extracts were characterized using the DPPH (2,2-diphenyl-1-picrylhydrazyl) test. The extracts were found to contain large amount of polyphenolic compounds, with flavonoids and phenolic acids, as well as their derivatives, being the most common classes of the phenols. Using the HPLC data the content of various phenols in the plants was systematic studied. It has been found that in all plants the most abundant phenols are flavonoids/flavonoid derivatives (on average about 75% of total mass of phenols). Among the flavonoids, luteolin derivatives predominate (86–94% of the total mass of flavonoids), and, among luteolin derivatives, the main compounds are orientin, orientin 2"- O-β-arabinopyranoside and isoswertiajaponin 2"- O-β-arabinopyranoside (67–83% of the total mass of luteolin derivatives). It has been also found that all the extracts possess the high activity in inhibition of DPPH radicals and that the antioxidant activity of the extracts correlates with total content of phenols in the samples. Thus, Deschampsia antarctica É. Desv. plants are a valuable source of natural phenolic antioxidants, and the most common antioxidants in the extracts are orientin, orientin 2"- O-β-arabinopyranoside and isoswertiajaponin 2"- O-β-arabinopyranoside.
Źródło:: Polish Polar Research; 2022, 43, 4; 341-362
0138-0338
2081-8262
Pojawia się w:: Polish Polar Research
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

Tytuł:: Development, integrative study and research prospects of Deschampsia antarctica collection
Autorzy:: Kunakh, Viktor
Twardovska, Maryana
Andreev, Igor
Drobyk, Nadia
Navrotska, Daria
Nuzhyna, Nataliia
Poronnik, Oksana
Konvalyuk, Iryna
Myryuta, Ganna
Ivannikov, Roman
Parnikoza, Ivan
Powiązania:: https://bibliotekanauki.pl/articles/16648071.pdf
Data publikacji:: 2023
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: Antarctic
in vitro plants
karyotype
genetic variability
nuclear DNA content
biologically active substances
Opis:: This review presents the results of multi-year efforts for the development and integral investigation of the collection of Deschampsia antarctica É. Desv. plants originated from the maritime Antarctic. To create the collection, we have optimized the procedures and conditions for germination of seeds and generation of aseptic plants in vitro together with their subsequent clonal propagation, long-term in vitro culture, and acclimatization of plants to pot culture, and finally produced fertile plants able to set viable seeds. The collection of plants cultivated in vitro and in pots is consisted of clones of 22 different genotypes originated from eight island populations from the Argentine Islands – Kyiv Peninsula region. Some of these clones have been successfully cultured for more than ten years and were found to be genetically stable over this period. The collection was shown to be heterogeneous in a number of variables. The morphological and anatomical characteristics of the plants, as well as the data of karyological, molecular cytogenetic, molecular genetics, and biochemical analysis are presented. The created collection of D. antarctica plants can provide a valuable plant material with well-studied characteristics grown under controlled conditions to perform experimental research on the mechanisms for plant adaptation and resistance to various abiotic factors of Antarctic environment. Furthermore, development of the collection and its comprehensive characterization form the basis for further biotechnological developments focused on the use of this Antarctic plant as a source of biologically active substances, which can potentially be used for therapeutic and prophylactic purposes.
Źródło:: Polish Polar Research; 2023, 44, 1; 41-68
0138-0338
2081-8262
Pojawia się w:: Polish Polar Research
Dostawca treści:: Biblioteka Nauki