Zobrazeno 1 - 9 of 9 pro vyhledávání: '"Alla Orekhova"'
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Akademický článek
Inhibition of Primary Photosynthesis in Desiccating Antarctic Lichens Differing in Their Photobionts, Thallus Morphology, and Spectral Properties
Autor: Miloš Barták, Josef Hájek, Alla Orekhova, Johana Villagra, Catalina Marín, Götz Palfner, Angélica Casanova-Katny
Publikováno v: Microorganisms, Vol 9, Iss 4, p 818 (2021)
Five macrolichens of different thallus morphology from Antarctica (King George Island) were used for this ecophysiological study. The effect of thallus desiccation on primary photosynthetic processes was examined. We investigated the lichens’ respo
Externí odkaz: https://doaj.org/article/abccf01ad14e4eda9cbd40f6fd99aae5
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2
Responses of primary photosynthetic processes to repetitive rehydration differ in two representatives of Svalbard moss flora
Autor: Alla Orekhova, Josef Hájek
Publikováno v: Czech Polar Reports. 12:103-114
Global warming in polar regions brings a risk of more frequent and long-lasting dry periods due to warmer and windier climate during polar summers. Mosses are well adapted to desiccation-rehydration events and they have evolved remarkable constitutiv
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6a1bb899025de38cdd3333bdf938537b
https://doi.org/10.5817/cpr2022-1-8
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3
Light regimen-induced variability of photosynthetic pigments and UV-B absorbing compounds in Luzula sylvatica from Arcto-Alpine tundra
Autor: Alla Orekhova, Josef Hájek, Michaela Bednaříková, Jakub Nezval, Michal Oravec, Gabriella Nora Maria Giudici, Vladimír Špunda, Miloš Barták, Radek Pech, Jan Tříska
Publikováno v: Czech Polar Reports. 10:263-280
The aim of this study was to evaluate the effects of different in situ light regimen on ecophysiological parameters of Luzula sylvatica leaves. Plants of L. sylvatica grown under natural sunny and shade conditions in arcto-alpine tundra were analyzed
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b9b25df2db3afc265db76d7f6d3b5f04
https://doi.org/10.5817/cpr2020-2-20
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4
Biometrical analysis and thallus morphology characteristics of Placopsis antarctica from King George Island, Antarctica ( Short Communication )
Autor: Alla Orekhova, Johanna Weiss
Publikováno v: Czech Polar Reports. 10:161-168
Placopsis antarctica is an ornithocoprophilous lichen that has been for a long time confused with P. contortuplicata I. M. Lamb. In our study, we focused on morphological characteristics of P. antarctica thalli. We report biometrical data on dominant
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ac3a1679d6303a43accc8d41d36c3264
https://doi.org/10.5817/cpr2020-2-13
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6
The effect of shock freezing on physiological properties and consequent growth of Antarctic filamentous (Stigeoclonium sp.) and coccal alga (Diplosphaera chodatii) on agar plates
Autor: Miloš Barták, Aleyna Özkar, Alla Orekhova, Josef Elster
Publikováno v: Czech Polar Reports. 9:37-48
In this study, we investigated the effects of shock freezing on physiological properties and consequent growth of in the Antarctic alga Stigeoclonium sp. and comparative coccal alga Diplosphaera chodatii on agar plates. Culture of algae grown in liqu
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f8edbba0649e3cac56ffdcd0a9ed17ac
https://doi.org/10.5817/cpr2019-1-4
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7
Inhibition of Primary Photosynthesis in Desiccating Antarctic Lichens Differing in Their Photobionts, Thallus Morphology, and Spectral Properties
Autor: Angélica Casanova-Katny, Götz Palfner, Alla Orekhova, Miloš Barták, Josef Hájek, Johana Villagra, Catalina Marin
Publikováno v: Microorganisms
Volume 9
Issue 4
Microorganisms, Vol 9, Iss 818, p 818 (2021)
Five macrolichens of different thallus morphology from Antarctica (King George Island) were used for this ecophysiological study. The effect of thallus desiccation on primary photosynthetic processes was examined. We investigated the lichens’ respo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15f578cfe3d3dc1ced84746511f6a29d
http://europepmc.org/articles/PMC8070113
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8
Resistance of Antarctic moss Sanionia uncinata to photoinhibition: chlorophyll fluorescence analysis of samples from the western and eastern coasts of the Antarctic Peninsula
Autor: Alla Orekhova, Angélica Casanova-Katny, Josef Hájek, Miloš Barták
Publikováno v: Plant biology (Stuttgart, Germany)References. 23(4)
Interspecific differences in the sensitivity of Antarctic moss Sanionia uncinata from the King George Island (KGI) and James Ross Island (JRI) to photoinhibititory treatment were studied in laboratory conditions by chlorophyll fluorescence techniques
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::348ea767a2d91016d054583b86ece26d
https://pubmed.ncbi.nlm.nih.gov/33866664
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9
The effect of upper cortex absence on spectral reflectance indices in Antarctic lichens during thallus dehydration
Autor: Miloš Barták, Michaela Marečková, Alla Orekhova, Jana Hazdrová
Publikováno v: Czech Polar Reports. 8:107-118
In maritime Antarctica, lichens and mosses represent dominant autotrophs forming community structure of vegetation oases. In our study, we selected 4 most common lichen species (Xanthoria elegans, Rhizoplaca melanophthalma, Leptogium puberulum, Physc
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1065c3a00485bc28f5e327e3c2002002
https://doi.org/10.5817/cpr2018-1-8
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