Počet záznamů: 1  

Stress-induced memory alters growth of clonal offspring of white clover (Trifolium repens)

  1. 1.
    0464286 - BU-J 2017 RIV US eng J - Článek v odborném periodiku
    González, Alejandra Pilar Rendina - Chrtek, Jindřich - Dobrev, Petre - Dumalasová, Veronika - Fehrer, Judith - Mráz, Patrik - Latzel, Vít
    Stress-induced memory alters growth of clonal offspring of white clover (Trifolium repens).
    American Journal of Botany. Roč. 103, č. 9 (2016), s. 1567-1574. ISSN 0002-9122
    Grant CEP: GA ČR(CZ) GA14-06802S
    Institucionální podpora: RVO:67985939 ; RVO:61389030
    Klíčová slova: asexual reproduction * DNA methylation * epigenetic variation
    Kód oboru RIV: EF - Botanika; EF - Botanika (UEB-Q)
    Impakt faktor: 3.050, rok: 2016

    The phenotype of an individual can be modifi ed by the environment experienced by its predecessors, a phenomenon called transgenerational or maternal effects. These effects are studied mostly across sexual generations and are thought to be mediated also by epigenetic variation. However, we do not know how important transgenerational effects are across asexual generations of clonal plants. We investigated the role of different drought intensities and durations experienced by parental plants of Trifolium repens on the growth of offspring ramets after transplantation of clonal cuttings to control conditions. We also treated half of the plants with 5-azacytidine, which is a demethylating agent, to test the potential role of DNA methylation on transgenerational effects. Transgenerational effects were manifested as increased biomass of offspring ramets if parental plants experienced medium drought applied for a short period and decreased biomass of offspring ramets if parental plants experienced intense drought for a short period. These transgenerational effects were not observed for offspring of parents from the same treatments if these were treated with 5-azacytidine, whose application signifi cantly decreased the amount of 5-methyl-2´-deoxycytidine in plants. Transgenerational effects might play an important role in the clonal plant Trifolium repens and are probably mediated by epigenetic variation. The growth and behavior of clonal plants might be affected not only by the ambient environment but also by environments that are no longer present at the time of clonal reproduction. This phenomenon can have yet unacknowledged ecological and evolutionary implications for clonal plants.
    Trvalý link: http://hdl.handle.net/11104/0265297