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Wyszukujesz frazę "parenchyma cell" wg kryterium: Temat

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    Tytuł:
    Strefa twardzieli w drewnie i proces jej powstawania
    Heartwood zone and its formation process
    Autorzy:
    Bieniasz, A.
    Tulik, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/979188.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    parenchyma cells
    programmed cell death
    sapwood
    tyloses
    aspiration
    ecstracts
    heartwood formation
    Opis:
    This paper reviews the literature on heartwood and its formation process. The factors involved in the process of heartwood formation are described, with particular attention paid to molecular, intercellular, organismal and environmental ones. The spatial distribution of heartwood along longitudinal and radial axes of the stem as well as biochemical changes in the heartwood and durability of this zone are also presented. Based on the literature data, it turns out that the heart−wood formation is neither clearly studied, nor fully understood. It seems that this part of wood can not only play a significant role from the point of view of tree biomechanics, but also is of great importance in their immune responses. In the era of observed dying processes of forest−forming trees, knowledge about the role of heartwood in these responses seems desirable.
    Źródło:
    Sylwan; 2020, 164, 06; 474-481
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rola śmierci komórek drewna w sukcesie ewolucyjnym roślin drzewiastych
    Contribution of wood cells death to evolutionary success of woody plants
    Autorzy:
    Tulik, M.
    Myśkow, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/989838.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    rosliny drzewiaste
    drewno
    komorki roslinne
    smierc komorki
    morfotypy
    apoptoza
    autoliza
    elementy trachealne
    parenchyma
    wlokno drzewne
    cewki
    tkanka miekiszowa
    autolysis
    cell death
    pcd
    ray parenchyma
    tracheary elements
    fibers
    wood differentiation
    Opis:
    The paper describes the different types of cell death during the process of wood cell formation and terminological variety found in the literature concerned. The cell death referred to as programmed cell death (PCD), is genetically controlled and fundamental for the correct function of the whole organism of woody plants. The wood is mainly composed of the tracheary elements fulfil as conductors of water, fibers that provide the mechanical support and parenchyma cells playing an important role in the storage of water and reserve materials. The PCD of these elements constitutes the final stage of their differentiation and it is proceeded by: (i) cambial cell divisions, (ii) the enlargement of the cambial derivatives. The successive phase concerns (iii) deposition of secondary cell walls and its lignification. After that, the cell commences to digest protoplast, what means that each cell participates in the process of its own demise actively. However, the time and the sequence of the appearance of these phases are distinct among the woody cells. In the case of the tracheary elements the digestion of the protoplast occurs immediately after the tonoplast breakdown. Therefore, these cells are short−lived elements of wood. The life span of the fibers and the parenchyma cells is longer (from month for fibers and years in case of parenchyma cells). For the latter cells the positional information (distance from the cambium) and vicinity with short−lived tracheary elements are considered to be important for undergoing the process of death.
    Źródło:
    Sylwan; 2015, 159, 05; 392-402
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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