scholarly journals Nowe stanowisko Pulsatilla patens (Ranunculaceae) w Warszawie

Author(s):  
Kateryna Fyałkowska
Keyword(s):  
2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Grażyna Łaska ◽  
Magdalena Maciejewska-Turska ◽  
Elwira Sieniawska ◽  
Łukasz Świątek ◽  
David S. Pasco ◽  
...  

AbstractThe purpose of this study was to determine if a methanolic extract of the Pulsatilla patens (L.) Mill. can inhibit the progression of cancer through the modulation of cancer-related metabolic signaling pathways. We analyzed a panel of 13 inducible luciferase reporter gene vectors which expression is driven by enhancer elements that bind to specific transcription factors for the evaluation of the activity of cancer signaling pathways. The root extract of P. patens exhibited strong inhibition of several signaling pathways in HeLa cells, a cervical cancer cell line, and was found to be the most potent in inhibiting the activation of Stat3, Smad, AP-1, NF-κB, MYC, Ets, Wnt and Hdghog, at a concentration of 40 µg/mL. The methanolic extracts of P. patens enhanced apoptotic death, deregulated cellular proliferation, differentiation, and progression towards the neoplastic phenotype by altering key signaling molecules required for cell cycle progression. This is the first study to report the influence of Pulsatilla species on cancer signaling pathways. Further, our detailed phytochemical analysis of the methanolic extracts of the P. patens allowed to deduce that compounds, which strongly suppressed the growth and proliferation of HeLa cancer cells were mainly triterpenoid saponins accompanied by phenolic acids.


2016 ◽  
Vol 5 (3) ◽  
pp. 48-53
Author(s):  
Larisa Valerievna Sidyakina ◽  
Vladimir Mikhailovich Vasjukov ◽  
Sergey Vladimirovich Saksonov

The Mogutova Mountain - domal erosive ostanets in the north of the Zhigulyovsk hill, lies in national park Samara Luka. Communities petrophytic steppes are formed on calcareous exposures of steep slopes of the western, southern and east expositions of the mountain Mogutova. Petrophytic-steppe communities on a slope of east exposition are described - petrophytic-forbs-feather grass steppe ( Stipa capillata + Stipa pennata + Herbae stepposae ), on a slope of west exposition - petrophytic-sunrose-feather grass steppe ( Stipa pennata + Helianthemum nummularium ), on a slope of south exposition - petrophytic-thyme-sedge-feather grass steppe ( Stipa pulcherrima + Carex pediformis + Thymus zheguliensis ). In the studied communities three narrow-local of endemic species of the Zhigulyovsk hill grows: Euphorbia zhiguliensis, Gypsophila juzepczukii, Thymus zheguliensis and three of subendemic species grows: Festuca wolgensis s.str. , Tanacetum sclerophyllum (endemics of Central Volga area), Koeleria sclerophylla (endemic of Central Volga area and South Ural); the relict element of flora is presented by three species: Alyssum lenense, Clausia aprica, Helianthemum nummularium . Five species are included in the Red book of the Russian Federation: Astragalus zingeri, Euphorbia zhiguliensis, Koeleria sclerophylla, Stipa pennata, Thymus zheguliensis ; sixteen species are included in the Red book of the Samara region: Adonanthe vernalis, Alyssum lenense, Astragalus zingeri, Clausia aprica, Cotoneaster laxiflorus, Euphorbia zhiguliensis, Festuca wolgensis, Gypsophila juzepczukii, Helianthemum nummularium, Koeleria sclerophylla, Onosma volgensis, Pulsatilla patens, Scabiosa isetensis, Stipa pennata, Tanacetum sclerophyllum, Thymus zheguliensis. The most widespread plants of petrophytic steppes of the Mogutova Mountain: Astragalus zingeri, Carex pediformis, Echinops ruthenicus, Galium hexanarium, Gypsophila juzepczukii, Helictotrichon desertorum, Jurinea ledebourii, Onosma volgensis, Psephellus carbonatus, Stipa pennata, Tanacetum sclerophyllum, Thesium ramosum, Thymus zheguliensis .


2005 ◽  
Vol 83 (6) ◽  
pp. 688-693 ◽  
Author(s):  
Rein Kalamees ◽  
Kersti Püssa ◽  
Ilkka Vanha-Majamaa ◽  
Kristjan Zobel

Successful management of disturbance-related endangered plant species requires thorough knowledge concerning their recruitment ecology. Pulsatilla patens (L.) Mill. is found in northern European forests that in the past have been subjected to a periodic wildfire regime and, thus, is supposedly adapted to corresponding changes in forest light conditions and thickness of the moss and litter layers. We tested whether this is true in a field experiment where seeds of P. patens were sown in experimentally burned and control boreal Scots pine forest sites of different successional age (clear-cut, 30 years old, 45 years old). The germination and early establishment of P. patens was enhanced in the experimentally burned conditions and was more successful in younger successional stages. On the other hand, in sites with a tree layer, the germination of P. patens was better in relatively darker areas, suggesting that the negative effect of successional age is probably not a result of changing light conditions, but rather a result of thicker moss and litter layers in the later successional stages.Key words: boreal forest, germination, forest fire, litter layer, Pulsatilla patens, seed sowing.


Author(s):  
В. А. Смагин ◽  
О. Е. Стёпочкина ◽  
А. Ю. Доронина ◽  
Г. Я. Дорошина ◽  
Е.Ю. Кузьмина ◽  
...  

Приводятся результаты первичного исследования болотной системы Ямницкая Чисть, а также ближайших ее окрестностей, осуществленного авторами статьи в 2015 г. Ранее опубликованные сведения с описанием этой территории отсутствовали. Болотная система Ямницкая Чисть расположена на юго-востоке Ленинградской обл. (Бокситогорский р-н) в границах планируемой к созданию одноименной особо охраняемой природной территории (ООПТ) регионального значения, занимая основную ее площадь. Особенности болотной системы обусловлены положением на наклонной поверхности равнины, примыкающей с юга к Вепсовской возвышенности, а также, по-видимому, обширными торфяными пожарами в прошлом. Слагающие болотную систему разнотипные болотные массивы, среди которых встречаются редкие для Ленинградской обл. типы болот, имеют заметный уклон поверхности, что отражается на ландшафтной структуре и характере растительного покрова. Болотная система окружена лесами, эталонными для юго-востока Ленинградской обл. и представляющими весь спектр южнотаежных лесных ассоциаций. На территории болотной системы и в окружающих ее лесах обнаружены редкие виды сосудистых растений, мхов, лишайников и грибов - Betula humilis, Epipogium aphyllum, Pulsatilla patens, Sphagnum palustre, Pylaisia selwynii, Heterogemma laxa, Lobaria pulmonaria, Hericium coralloides и др.


1975 ◽  
Vol 94 (2) ◽  
pp. 476 ◽  
Author(s):  
Jane H. Bock ◽  
Steven J. Peterson

2001 ◽  
Vol 39 (1) ◽  
pp. 7-10 ◽  
Author(s):  
Wencai Ye ◽  
Nian-Ning Ji ◽  
Shouxun Zhao ◽  
Chun-Tao Che
Keyword(s):  

THE BULLETIN ◽  
2019 ◽  
Vol 4 (380) ◽  
pp. 83-92 ◽  
Author(s):  
G. J. Sultangazina ◽  
◽  
О. А. Kuprijanov ◽  
А. N. Kuprijanov ◽  
R. S. Beyshov ◽  
...  

2021 ◽  
Vol 1 (8) ◽  
pp. 18-29
Author(s):  
Lidiya Anishchenko ◽  

According to the results of the study of the flora of the natural monument of regional natural monument «Pe-trovskoe swamp» (Russia, Bryansk Region, Mglinsky district), carried out in 2018–2019, annotated lists of vas-cular plants and bryophytes were compiled. The flora of vascular plants includes 367 species from 80 families. The largest number of species is found in the families Asteraceae (40 species), Poaceae (34), Rosaceae (25), Fabaceae (19), Cyperaceae, Lamiaceae and Apiaceae (17), Caryophyllaceae (13), Ranunculaceae (15), Brassi-caceae and Scrophylariaceae (10). 5 of these species are listed in the regional Red Data Book (Krasnaia..., 2016): Diphasiastrum complanatum, Juniperus communis, Lathyrus pisiformis, Pulsatilla patens, Sanicula europaea. Alien species were recorded, including those spreading from cultivated coenoses in nearby settlements: Acer negundo, Amelanchier spicata, Echinocystis lobata, Helianthus tuberosus, Hemerocallis fulva, Hesperis pycnotricha, Levisticum officinalis, Oxalis stricta, Rudbeckia laciniata, Saponaria officinali, Sorbaria sorbifolia. Bryophytes belong to 107 species in 41 families. New localities of mosses listed in the regional Red Data Book were discovered: Homalia trichomanoides, Neckera pennata, Sphagnum jensenii. Indicator species of old-growth forests were noted: Anomodon longifolius, Homalia trichomanoides, Hypnum cupressiforme, Neckera pennata, Stereodon pallescens.


2018 ◽  
Vol 87 (1) ◽  
Author(s):  
Jason Hoeksema ◽  
Mélanie Roy ◽  
Grazyna Łaska ◽  
Aneta Sienkiewicz ◽  
Amber Horning ◽  
...  

The sharing of species of ectomycorrhizal fungi (EMF) among different co-occurring host plant species could allow the formation of common mycorrhizal networks, which can alter plant–plant interactions and succession. Such sharing of EMF among woody species is thought to be common in many forests, but very few herbaceous plants form EMF, so they are assumed to be excluded from EMF networks in forests. We studied the EMF on roots of a common coniferous tree, <em>Pinus sylvestris</em>, and a co-occurring rare herbaceous perennial plant, <em>Pulsatilla patens</em> (Ranunculaceae), in northeastern Poland. We examined roots from co-occuring <em>P. sylvestris</em> and <em>P. patens</em>, visually classified EMF into morphotypes, studied tissue sections of mycorrhizal structures using compound microscopy, and used DNA sequencing to identify the fungi. On both host plant species, we observed EMF colonization, with colonized root tips exhibiting a swollen appearance, as well as a variety of colors and textures of fungal mycelium covering and emanating from those swollen tips. Sectioning and microscopic examination of an EMF morphotype common on <em>P. patens</em> confirmed the presence of a mantle and Hartig net, indicating the likely presence of functional ectomycorrhizal structures. The two most frequent EMF were <em>Cenococcum geophilum</em> and <em>Piloderma olivaceum</em>, and the latter was found to associate with both host plant species. Several EMF found here only on <em>P. patens</em>, including <em>C. geophilum</em> and two <em>Russula</em> species, are known from previous studies to also associate with <em>P. sylvestris</em> and other tree species. The observation of shared EMF between a coniferous tree and an understory herb indicates the potential for common mycorrhizal networks to alter interactions between these two species and may also indicate a unique way in which the distribution and abundance of a rare herbaceous plant may be influenced by shared mutualisms with a common co-occurring woody plant.


Sign in / Sign up

Export Citation Format

Share Document