In field, we compared the changes in the density of d. Deschampsia antarctica, the antarctic hair grass, is one of two flowering plants native to. Deschampsia antarctica is known to form a substantial buried seed population mcgraw and. An extract from the plant deschampsia antarctica protects fibroblasts from senescence induced by hydrogen peroxide. In this study, we found that the chi from the antarctic plant deschampsia antarctica dachi1 is of type i based on sequence homology but can use type ii chi substrates. In particular, the process defines selected bioreactor conditions whereby morphologically high quality plants are obtained at high rates. Download fulltext pdf a tricin derivative from deschampsia antarctica desv. Plants profile for deschampsia danthonioides annual hairgrass. The primary purpose of the present work was to determine cold resistance mechanisms in these two antarctic plants. Us9426950b2 production of deschampsia antartica in. Deschampsia antarctica, the antarctic hair grass, is one of two flowering plants native to antarctica, the other being colobanthus quitensis antarctic pearlwort they mainly occur on the south orkney islands, the south shetland islands, and along the western antarctic peninsula. Samples were collected from antarctica and maintained in vitro culture during 2 years.
Cariophyllaceae are the only two vascular plants that have colonized the maritime antarctic. Mechanisms of antarctic vascular plant adaptation to. The invention relates to a thermophotobioreactor and to a method for the culture and mass micropropagation of deschampsia antarctica in vitro. Reproduction of antarctic flowering plants antarctic. The species deschampsia antarctica da is one of the only two native vascular species that live in antarctica. The record derives from wcsp data supplied on 20120323 which reports it as an accepted name record 407539 with original publication details. Pdf deschampsia antarctica poaceae the only native grass. To clarify the taxonomic position, phylogeographic origin, genetic heterogeneity, and population dynamics of d. Morphological and ultrastructural changes of organelles in. Pdf deschampsia antarctica is the only grass naturally occurring in antarctica, and it is also indigenous to southern south america. Only two vascular plants, deschampsia antarctica desv. Advances of native and nonnative antarctic species to in. Waterlogging induced oxidative stress and the mortality of.
The antarctic plant deschampsia antarctica da is able to survive in extreme conditions thanks to its special mechanism of protection against environmental aggressions. Us20344528a1 thermophotobioreactor and method for the. Files are available under licenses specified on their description page. Molecular cytogenetic analysis of deschampsia antarctica desv.
Deschampsia antarctica edafence, eda, a natural aqueous extract, has shown keratinocyte and fibroblast cell protection effects against ultraviolet radiation and dioxin toxicity. Plants profile for deschampsia danthonioides annual. Photosynthetic temperature response of the antarctic. Habitat and leaf cytogenetic characteristics of deschampsia. Lb1530 an aqueous extract of deschampsia antarctica eda. Characterization and structural determination of coldadapted monodehydroascorbate reductase, mdhar, from the antarctic hairgrass deschampsia antarctica by ae kyung park 1,2, ilsup kim 3, hackwon do 1,4, hyun kim 1, woong choi 1, seungwoo jo 5, seung chul shin 1, jun hyuck lee 1,6, hosung yoon 3,5,7 and hanwoo kim 1,6. Expression and characterization of a recombinant psychrophilic cuzn superoxide dismutase from deschampsia antarctica. A serum containing deschampsia antartica extract, ferulic acid and vitamin c has antipollutant effects on skin exposed to high tropospheric ozone levels. Bladene er linjeformede og helrandede med indrullet rand. Molecular evolution and variability of its1its2 in. Pdf deschampsia antarctica poaceae the only native. Effect of in vitro cold acclimation of deschampsia antarctica. Native species of the antarctic deschampsia antarctica and colobanthus quitensis exist at the limits of survival of vascular plants. Plants that inhabit antarctica have raised scientific interest due to their resilience to climate change, abiotic tolerance mechanisms and potential biological applications.
Extract of deschampsia antarctica eda prevents dermal cell. Formation, structure, and representation in moss polsters of pollen grains of colobanthus quitensis kunth bartl. Poaceae update for itis, in cooperation with natureserve, and based on the catalogue of new world grasses database and other sources. Deschampsia antarctica antarctic hair grass is one of two flowering plants native to antarctica, the other being colobanthus quitensis antarctic pearlwort they mainly occur on the south orkney islands, the south shetland islands and along the western antarctic peninsula. In this regard, we studied the protective capacity of eda against the deleterious effects of artificial blue light irradiation in human dermal fibroblasts hdf. Only two flowering plants are found on the entire continent, which occur on the western antarctic peninsular the antarctic hair grass, deschampsia antarctica pictured and the antarctic pearlwort colobanthus quitensis. This vascular plant grows in favourable locations along the west coast of the antarctic peninsula john et al.
Inhibits colorectal carcinoma growth and liver metastasis through the induction of a specific immune response. Photosynthetic temperature response of the antarctic vascular. Protective effect of the aqueous extract of deschampsia. The antarctic hair grass is one of the two native vascular plants growing in antarctica. Pdf anatomical variations of deschampsia antarctica e. Skin protective effects of an antipollution, antioxidant. A serum containing deschampsia antartica extract, ferulic.
Frontiers antioxidant responses induced by uvb radiation. Some of the da defensive properties have been reported in vivo in human cells, and an extract from the plant eda prevents uvinduced human photoaging. Colonization and demographic structure of deschampsia antarctica. In this work, we investigated whether an aqueous extract of the plant eda retains some of its defensive properties and is able to protect our skin against common external oxidants. This page was last edited on 3 september 2017, at 07. If the inline pdf is not rendering correctly, you can download the pdf file here. Pdf use of deschampsia antarctica for nest building by. The colonization capacity and demographic structure of populations of deschampsia antarctica and colobanthus quitensis were studied in different microhabitats between. We performed ecophysiological, biochemical, and metabolomic studies to investigate the responses of da to low temperature. Genetic variability in the antarctic hairgrass deschampsia antarctica desv. Deschampsia antarctica and colobanthus quitensis were studied in different. Growth and reproduction of antarctic vascular plants in. Pdf carbohydrates in colobanthus quitensis and deschampsia.
An openlabel, prospective study was conducted to assess the efficacy and tolerability of a topical antiaging regimen comprising highconcentration retinoids, deschampsia antarctica extract, and niacinamide in participants living in a heavily polluted level iii, world health organization city. Pdf colonization and demographic structure of deschampsia. An aqueous extract of deschampsia antarctica eda exerts clear protective effects on human skin cell against dioxins treatments. Foi descrita por etienneemile desvaux e publicado em flora chilena 6. Poaceae 2n 26 is one of the two vascular plants adapted to the harshest environment of the antarctic. Efficacy of an antiaging treatment against environmental. Deschampsia antarctica and colobanthus quitensis were studied in different microhabitats between 10 and 147 m a. Deschampsia antarctica, the antarctic hairgrass, is one of two vascular plant species which grow along the west coast of the antarctic penin sula. This invention discloses a process for the propagation and survival of deschampsia antarctica suitable for industrial scale production. To clarify the enzymatic mechanism of dachi1 at the molecular level, the crystal structures of unliganded dachi1 and isoliquiritigeninbound dachi1 were determined at 2. The mesophyll cells of four species of poaceae flowering plants growing in polar regions were studied deschampsia antarctica desv. Deschampsia antarctica is a plant that grows in antarctica and survives to extreme low temperature and high uv radiation, thus it is an ideal model to study novel antioxidants. Populations of antarctic hairgrass deschampsia antarctica bioone.
The present invention relates to methods of preparing aqueous extracts of d. Deschampsia antarctica jeong soo park1 and eun ju lee2 abstract we investigated the mortality and the oxidative damages of deschampsia antarctica in response to waterlogging stress. Poaceae rep resents one of the two vascular plants that have colonized the antarctic continent, which is usually. Deschampsia sometimes grow in boggy acidic formations, an example of which is the portlethen moss, scotland. Active components of the antineoplastic extract are also disclosed and a method to prevent proliferation of cancerous or tumorous cells with the extract or with components thereof is disclosed. Pdf a tricin derivative from deschampsia antarctica desv. Pdf the taxonomical position of deschampsia antarctica desv,the only native grass. Us20100310686a1 extracts of deschampsia antarctica desv. Populations of antarctic hairgrass deschampsia antarctica show.
The soil water content at site 2 was 6fold higher than that of site 1, and the density of d. Deschampsia antarctica is one of the two species of angiosperms that have colonized the maritime antarctic smith, 2003. In this regard, deschampsia antarctica da is an antarctic plant able to live under highsolar irradiation, highsalinity and highoxygen concentrations, low temperature, and extreme dryness. Deschampsia antarctica is the worlds most southern monocot, 10 11 and one of only two flowering plants of antarctica. The board of trustees of the royal botanic gardens, kew. Pollen of the antarctic plants colobanthus quitensis and. Antarctic moss carpets facilitate growth of deschampsia antarctica.
Provided by usda nrcs wetland science institute wsi. Us20110177178a1 extracts of deschampsia antarctica desv. A recent warming trend has increased germination, and thus. The skin is an organ in direct contact with various air pollutants. Dioxins are ubiquitous environmental contaminants that have attracted toxicological interest. Extract of deschampsia antarctica eda prevents dermal. Less than 1% of antarctica is available for colonisation by plants. Jul 30, 2019 we investigated the mortality and the oxidative damages of deschampsia antarctica in response to waterlogging stress. Pollen of the antarctic plants colobanthus quitensis and deschampsia antarctica and its representation in moss polsters. Background and aims the leaf anatomy and ultrastructure of deschampsia antarctica poaceae. Deschampsia antarctica poaceae, the only indigenous poaceae specie in antarctic, were found dead, parasitized by a fungi pathogen. We investigated the mortality and the oxidative damages of deschampsia antarctica in response to waterlogging stress. The photosynthetic temperature response of the antarctic vascular plants colobanthus quitensis and deschampsia antarctica was examined by measuring whole. Fundamental adaptations to abiotic environmental factors that qualitatively distinguish them from the other vascular plants of extreme regions, namely temperature, ultraviolet radiation hardiness, and their genetic plasticity in the.
Based on the shape of its perithecia, with oblique neck, erumpent in the grass tissues, ascospore form and septation, the specie was identified as new to science. An extract from the plant deschampsia antarctica protects. Both species had negligible midday net photosynthetic rates p n on warm, usually sunny, days canopy air. Anatomical features and ultrastructure of deschampsia antarctica. A recent warming trend has increased germination, and thus number of seedlings and plants, also extending their. The only two native antarctic vascular plants, deschampsia antarctica desv. Deschampsia antarctica, antarctic hairgrass family poaceae, is the only natural grass. Deschampsia antarctica wikipedia, a enciclopedia livre.
They mainly occur on the south orkney islands, the south shetland islands, and along the western antarctic peninsula. Seed production was similar in each season assessed and at all three sites. Populations of the only two flowering plants native to the antarctic have recently increased in number and size possibly due to climate warming. Endophytic fungi associated with the antarctic grass deschampsia. A recent warming trend has increased germination, and thus number of seedlings and plants, also extending their range.
Pdf genetic variability in the antarctic hairgrass. We firstly conducted a comprehensive molecular cytogenetic analysis of d. Extract of deschampsia antarctica eda prevents dermal cell damage induced by uv radiation and 2,3,7,8tetrachlorodibenzopdioxin by alicia zamarron 1, esther morel 2, silvia rocio lucena 1,3, manuel mataix 1, azahara perezdavo 4, concepcion parrado 5 and salvador gonzalez 6. The invention comprises a discontinuous immersion reactor for biomass micropropagation, including means for incorporating chemical inducing agents salt, metals, organic compounds, etc. Growth and reproduction of antarctic vascular plants in response to warming and uv radiation reductions in the field. All structured data from the file and property namespaces is available under the creative commons cc0 license. Cold resistance in antarctic angiosperms bravo 2001.
Deschampsia antarctica 1 rasmussen cape, antarctic peninsula 65 140 s, 64 050 w gu181211 ant1 this study d. The structure of the anther and pollen grain was investigated in an antarctic plant deschampsia antarctica desv. Wo2009064480a1 new extracts of deschampsia antarctica desv. Deschampsia antarctica in world checklist of selected plant families. Although the species is a valuable model for study of environmental stress tolerance in plants, its karyotype is still poorly investigated. The present disclosure provides a novel antineoplastic extract obtained from deschampsia antarctica plant. Deschampsia antarctica name synonyms aira antarctica hook. Material was gathered in six localities that were highly diverse in terms of the nature of soillike substrata, presence of viral antigen determinants, and the average. Antioxidant responses induced by uvb radiation in deschampsia. Deschampsia antarctica, the antarctic hair grass, is one of two flowering plants native to antarctica, the other being colobanthus quitensis antarctic pearlwort.
Material was gathered in six localities that were highly diverse in terms of the nature of soillike substrata, presence. Constitutive expression of dacbf7, an antarctic vascular plant deschampsia antarctica cbf homolog, resulted in improved cold tolerance in transgenic rice plants. The colonization capacity and demographic structure of populations of. Dec 30, 2014 this page was last edited on 3 september 2017, at 07. A controlled singleblind, prospective clinical trial in women living in urbanized, high air pollution area during the summer season massimo milani 1, marco piacentini 1 and leonardo celleno 2 correspondence. Heterologous expression of a novel psychrophilic cuzn. Crystals free fulltext characterization and structural. Us20110177178a1 us12928,317 us92831710a us2011177178a1 us 20110177178 a1 us20110177178 a1 us 20110177178a1 us 92831710 a us92831710 a us 92831710a us 2011177178 a1 us2011177178 a1 us 2011177178a1 authority us united states prior art keywords extract compounds deschampsia extracts peaks prior art date 20071114 legal status the legal status is an. Deschampsia antarctica, one of only 2 flowering plants found.
Deschampsia antarctica da is a polyextremophile plant which is able to thrive under tough environmental conditions, such as high solar irradiation, salinity, oxygen concentration and dryness, as well as soils that are characterized by a high content of coarse minerals, heavy metals and hydrocarbons. Two native antarctic vascular plants, deschampsia antarctica and. Deschampsia antarctica, one of only 2 flowering plants. Use of deschampsia antarctica for nest building by the kelp gull in the argentine islands area maritime antarctica and its possible role in plant dispersal. Pdf this paper presents a comparative study on the anatomy of the antarctic hairgrass deschampsia antarctica e.
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