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Wyszukujesz frazę "Kamińska, M." wg kryterium: Autor

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    Wyświetlanie 1-7 z 7
    Tytuł:
    The structure of the spur nectary in Dendrobium finisterrae Schltr. (Dendrobiinae, Orchidaceae)
    Budowa nektarnika ostrogowego u Dendrobium finisterrae Schltr. (Dendrobiinae, Orchidaceae)
    Autorzy:
    Kaminska, M.
    Stpiczynska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/26744.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    structure
    spur anatomy
    nectary
    Dendrobium finisterrae
    Dendrobiinae
    Orchidaceae
    flower
    micromorphology
    nectar
    pollination
    Opis:
    To date, the structure of the nectary spur of Dendrobium finisterrae has not been studied in detail, and the present paper compares the structural organization of the floral nectary in this species with the spurs of other taxa. The nectary spur of D. finisterrae was examined by means of light microscopy (LM), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). It is composed of a single layer of secretory epidermis and several layers of small and compactly arranged subepidermal secretory cells. The secretory cells have thick cellulosic cell walls with primary pits. The secretory tissue is supplied by vascular bundles that run beneath in ground parenchyma and are additionally surrounded by strands of sclerenchymatous fibers. The flowers of the investigated species displayed morphological features characteristic of bee-pollinated taxa, as they are zygomorphic, creamy-green coloured with evident nectar guides. They also emit a weak but nice scent. However, they possess some characters attributed to bird-pollinated flowers such as a short, massive nectary spur and collenchymatous secretory tissue that closely resembles the one found in the nectaries of certain species that are thought to be bird-pollinated. This similarity in anatomical organization of the nectary, regardless of geographical distribution and phylogeny, strongly indicates convergence and appears to be related to pollinator-driven selection.
    Źródło:
    Acta Agrobotanica; 2011, 64, 1
    0065-0951
    2300-357X
    Pojawia się w:
    Acta Agrobotanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Changes of ultrastructure and cytoplasmic free calcium in Gladiolus x hybridus Van Houtte roots infected by aster yellows phytoplasma
    Autorzy:
    Rudzinska-Langwald, A
    Kaminska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/58600.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    phytoplasma
    calcium deposit
    plant disease
    Gladiolus x hybridus
    change
    botany
    phloem structure
    aster yellows phytoplasma
    ultrastructure
    root
    Opis:
    Roots of Gladiolus x hybridus Van Houtte plants infected with aster yellows phytoplasma were examined. The infected plants had a reduced root system in comparison to control plants. Their roots were thinner and the stele organisation was changed. Phytoplasmas were present in sieve tubes, companion cells and phloem parenchyma cells of the infected plant roots. Free calcium ions were localized in the cells of infected plants. Cells of the stele of infected roots, especially these infected with phytoplasmas, showed an increase of calcium antimonite deposits in theirs protoplasts. Also the number of calcium antimonite deposits increased in sieve tubes of infected roots. The deposits were present on plasma membrane, around the sieve tube plate and also in the lumen of the sieve tube. The increase of free calcium ions in sieve tubes did not cause the occlusion of sieve tube pores. Companion cells and some parenchyma cells with phytoplasmas did not react to phytoplasma infection with an increase of Ca2+ ions in protoplast. The parenchyma cells showing signs of degeneration reacted with high increase of calcium ions. The Ca2+ ions were present mainly in cytoplasm of infected parenchyma cells. There were calcium antimonite deposits in infected plant roots xylem elements and in intracellular spaces of cortex parenchyma. Such deposits were not present in control plants.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2003, 72, 4
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparative structure of the osmophores in the flower of Stanhopea graveolens Lindley and Cycnoches chlorochilon Klotzsch (Orchidaceae)
    Porównanie budowy osmoforów w kwiatach Stanhopea graveolens Lindley i Cycnoches chlorochilon Klotzsch (Orchidaceae)
    Autorzy:
    Anton, S.
    Kaminska, M.
    Stpiczynska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/27877.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Opis:
    The structure of the osmophores in Stanhopea graveolens and Cycnoches chlorochilon was studied by means of light microscopy (LM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The scent glands are located in the basal part of the labellum. The surface of the osmophores is wrinkled or rugose, which increases the area of fragrance emission. On the surface of the epidermis, remnants of secretion are noticeable in S. graveolens, but these are absent in C. chlorochilon. The osmophore tissue is composed of secretory epidermal cells and several layers of subepidermal parenchyma, and it is supplied by vascular bundles that run in ground parenchyma. The secretory cells have large nuclei, a dense cytoplasm with numerous ER profiles, lipid droplets, and plastids with a substantial amount of starch, which are probably involved in the synthesis of volatile substances. In the cell walls of the osmophore cells, numerous pits with plasmodesmata occur that are likely to take part in symplastic transport of the scent compounds. The structure of the osmophores is similar in both investigated species. Both S. graveolens and C. chlorochilon are pollinated by euglossine bees, and such similarity results from adaptation to effective scent emission and attraction of pollinators.
    W niniejszej pracy badano strukturę osmoforów w kwiatach Stanhopea graveolens Lindley oraz Cycnoches chlorochilon Klotzsch wykorzystując mikroskopię świetlną (LM), skaningową elektronową (SEM) oraz transmisyjną elektronową (TEM). Gruczoły wydzielające zapach zlokalizowane są u podstawy warżki. Powierzchnia osmoforów jest pomarszczona lub brodawkowata, co ułatwia emisję substancji zapachowych. W SEM na powierzchni epidermy u S. graveolens widoczne są pozostałości wydzieliny, natomiast u C. chlorochilon pomimo tego, że wydzielina pokrywa warżkę świeżych kwiatów, to w SEM nie jest widoczna. Tkanka osmoforowa jest utworzona z komórek wydzielniczych epidermy oraz kilku warstw subepidermalnych komórek miękiszowych i jest zaopatrywana przez wiązki przewodzące zlokalizowane w miękiszu zasadniczym. Komórki wydzielnicze mają duże jądro, gęstą cytoplazmę, ER, krople lipidowe oraz plastydy z ziarnami skrobi. W ścianach komórek osmoforów znajdują się liczne jamki z plazmodesmami, które przypuszczalnie biorą udział w symplastycznym transporcie związków zapachowych. Osmofory badanych gatunków mają bardzo podobną budowę anatomiczną. Zarówno S. graveolens jak i C. chlorochilon są zapylane przez pszczoły Euglossine, natomiast podobieństwa w strukturze ich osmoforów wynikają z przystosowania do efektywnego wydzielania zapachu, a tym samym skutecznego zwabiania zapylaczy.
    Źródło:
    Acta Agrobotanica; 2012, 65, 2
    0065-0951
    2300-357X
    Pojawia się w:
    Acta Agrobotanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Phytoplasma detection in rose shoots propagated in vitro
    Autorzy:
    Kaminska, M
    Podwyszynska, M.
    Sliwa, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/58844.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    phytoplasma
    micropropagation
    rose
    antibiotic
    virus-like disease
    rose plant
    in vitro
    detection
    shoot
    Opis:
    The results of PCR examination indicated that during two years of tissue culture at standard conditions, on the medium with BAP 1 mg l-1 and continuous temperature of 20oC, phytoplasma could be detected in diseased plants of rose cv Sacha and Jazz. In the second year of micropropagation phytoplasma detection rate in tissues of infected roses increased and was relatively higher than in the first one. To test whether phytoplasmas are sensitive to temperature and light intensity, phytoplasma-affected micropropagated rose plants were grown on medium with BAP 1.0 or 0.5 mg l-1 and at the temperature of 4, 15, 20 or 25oC in darkness or in the light. PCR analysis indicated that phytoplasma detection was not effected by these conditions during 4 weeks of culturing. However, phytoplasma was not detectable in rose plants after 8 weeks culturing on the same medium without transplanting. Micropropagated rose shoots maintained on medium with Gentamycin or Baytril at the concentration of 25.0 or 50.0 mg l-1 had reduced growth and were chlorotic. However, no direct effect of applied antibiotics on phytoplasma detection was evidenced.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2005, 74, 3
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Structure of the cuniculus nectary in Brassavola flagellaris Barb. Rodr. (Laeliinae Benth., Orchidaceae)
    Budowa nektarnika typu cuniculus u Brassavola flagellaris Barb. Rodr. (Laeliinae Benth., Orchidaceae)
    Autorzy:
    Stpiczynska, M.
    Davies, K.L.
    Kaminska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/28346.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    structure
    cuniculus nectary
    nectary
    Brassavola flagellaris
    Laeliinae
    Orchidaceae
    secretion
    plant anatomy
    ultrastructure
    flower
    Opis:
    To date, the structure of the cuniculus nectary has not been studied in detail. Furthermore, the secretory mechanism of such nectaries has not been investigated. The present paper describes, for the first time, the structural organization and ultrastructure of the cuniculus nectary in the moth-pollinated orchid Brassavola flagellaris Barb. Rodr. This tubular structure is situated between the perianth tube and ovary and, in its possession of thick, cellulose cell walls, resembles the nectary of ornithophilous taxa. The presence of large secretory vesicles that fuse with the plasmalemma indicate that granulocrine nectar secretion occurs in this species. The lumen of the cuniculus is lined with unicellular hairs. However, the cuticle overlying the whole epidermal surface lining the lumen (both glabrous and pubescent regions) was coated with nectar residues and became distended and cracked, indicating that this entire tissue is probably involved in nectar secretion.
    Źródło:
    Acta Agrobotanica; 2010, 63, 1
    0065-0951
    2300-357X
    Pojawia się w:
    Acta Agrobotanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of freezing desiccation on cold hardiness, ROS, membrane lipid levels and antioxidant status in spruce seedlings
    Autorzy:
    Kaminska-Rozek, E
    Pukacki, P.M.
    Powiązania:
    https://bibliotekanauki.pl/articles/58255.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    desiccation stress
    antioxidant status
    freezing desiccation
    spruce
    desiccation
    phospholipid
    lipid level
    lipid
    membrane
    cold hardiness
    reactive oxygen species
    seedling
    Picea
    winter desiccation
    Opis:
    The symptoms of oxidative stress and antioxidative response were investigated on Norway spruce seedlings subjected to freezing desiccation conditions. Three-year-old seedlings were exposed to freezing desiccation at -3oC and -10oC for 45 days in two acclimation stages: autumn (October) and winter (January). The stress enhanced the production of reactive oxygen species (ROS): superoxide radical anion (O2.-), and hydrogen peroxide (H2O2). Concentrations of low molecular antioxidants: glutathione (GSH), ascorbic acid (AsA) and a-tocopherol declined at both low temperatures and acclimation stages. The activity of superoxide dismutase (SOD) increased with ROS production, while guaiacol peroxidase (POX) activity decreased. The freeze-induced desiccation of needles was significantly correlated with the cold hardiness (LT50), the level of low-molecular antioxidants, and POX activity, but not with SOD activity. Under extreme freezing desiccation conditions, these reactions continued, leading to the degradation of membrane phospholipids and a strong decrease in cold hardiness. The results show that membranes are the primary site of injury induced by ROS, produced under the influence of low temperature combined with dehydration. The acclimation response of Norway spruce needles to the oxidative stress generated by long-term cold and/or freezing desiccation is discussed.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2005, 74, 3
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Differential effects of spring reacclimation and deacclimation on cell membranes of Norway spruce seedlings
    Autorzy:
    Pukacki, P.M.
    Kaminska-Rozek, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/56935.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2013, 82, 1
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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