Number of the records: 1  

Differences in Anatomical Structure and Lignin Content of Roots of pedunculate Oak and Wild Cherry-Tree Plantlets During Acclimation

  1. 1.
    0104356 - UEB-Q 20043020 RIV CZ eng J - Journal Article
    Soukup, A. - Malá, J. - Hrubcová, Marie - Kálal, J. - Votrubová, O. - Cvikrová, Milena
    Differences in Anatomical Structure and Lignin Content of Roots of pedunculate Oak and Wild Cherry-Tree Plantlets During Acclimation.
    [Rozdíly v anatomické struktuře a obsahu ligninu v kořenech dubu letního a třešně ptačí v průběhu aklimatizace.]
    Biologia Plantarum. Roč. 48, č. 4 (2004), s. 481-489. ISSN 0006-3134. E-ISSN 1573-8264
    R&D Projects: GA ČR GA206/04/0999
    Grant - others:Grantová agentura Karlovy University(CZ) 145/2003/B-Bio/PrF
    Institutional research plan: CEZ:AV0Z5038910
    Keywords : exodermis * in vitro * lignin
    Subject RIV: GF - Plant Pathology, Vermin, Weed, Plant Protection
    Impact factor: 0.744, year: 2004

    The lignin contents and anatomical structure of roots of wild cherry (Prunus avium L.) and pedunculate oak (Quercus robur L.) plantlets were compared to explain differences in response during transfer from in vitro to ex vitro conditions. Lignification of cell walls increased significantly in both oak and cherry roots during the period of acclimation and finally lignin content of root tissues of in vitro propagated plantlets reached the levels not significantly different from seedlings grown in soil. Later on when secondary tissues appeared, lignified secondary xylem constituted most of the tissues of both species. The most conspicuous interspecific difference in root structure was the presence of phi-thickenings in cortical layers just outer to endodermis in cherry roots cultivated ex vitro. Formation of phi-thickenings was avoided in vitro and their presence thus seems to be under environmental control. Suberised well established exodermis was present in roots of oak but not detected in those of cherry. Very early development of exodermis in oak roots, preceding suberisation of endodermis, was recorded in vitro but not in well aerated soil. While multilayered and well-developed cork occurred in oak, only thin walled and less suberised secondary dermal tissues were found in cherry.

    V průběhu procesu aklimatizace byl zjištěný výrazný nárůst obsahu ligninu v buněčných stěnách kořene dubu letního a třešně ptačí. Nebyly zjištěny výrazné rozdíly v obsahu ligninu mezi semenáčky obou druhů pěstovaných in vitro a rostoucích v půdě. Nápadný mezidruhový rozdíl ve struktuře kořene představovaly ztluštěniny vně endodermis vyskytující se pouze u třešně ptačí kultivované ex vitro.Na rozdíl od třešně byla zjištěna výrazná suberizace exodermis v kořenech dubu letního.
    Permanent Link:

Number of the records: 1  

  This site uses cookies to make them easier to browse. Learn more about how we use cookies.