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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Transgenerational effects of plant biotic interactions
 PUY GUTIÉRREZ, Javier
This thesis focuses on the transgenerational effects triggered by plant biotic interactions and explores their relevance on ecological and evolutionary processes. The following sections document novel results that show their important consequences on different aspects. Primarily, we established the necessary methodology to be able to explore these questions and to disentangle the mechanisms originating the transgenerational plasticity by validating a demethylation method. Then, we checked whether the biotic interactions alter the phenotype via within-generation and transgenerational plasticity, examining the magnitude and direction of the response on each specific "response traits". Lastly, the potential role of transgenerational plasticity for adaptation, species coexistence, creating biodiversity and population and ecosystem functioning is tested.
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Improved demethylation in ecological epigenetic experiments: Testing a simple and harmless foliar demethylation application
 DVOŘÁKOVÁ, Hana
Spray application of 5azacytidine on established plant seedlings was tested for its demethylating efficiency. It represents a novel method for plant experimental demethylation with a potentially lower negative impact on plant development compared to the traditional application of the demethylating agent through germination of seeds in its solution. Further, the 5azacytidine spray application was used in practice to erase the epigenetic memory in offspring of Taraxacum brevicorniculatum plants from different competitive conditions. The impact of parental competition on the juvenile phenotype was estimated by measuring growth related traits, while the experimental demethylation allowed for evaluating the significance of DNA methylation marks in bioticaly induced transgenerational effects in T. brevirorniculatum.
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