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- W2123089212 abstract "Conifers are woody, long-lived, stationary organisms, with rather limited ranges of seed dispersal that could benefit from a previous adaptation of the progeny to the prevailing environmental conditions. The adaptational process is unlikely to be the result of genetic changes (chromosomal rearrangements, mutations, deletions, or insertions) across one generation, since mutation frequencies are very low. A more likely mechanism to enhance the progenies’ fitness is the so called epigenetic memory or maternal effect. In this study, we used qRT-PCR analysis of gene expression patterns of selected candidate genes to provide evidence of a maternal effect at a basal level and upon induction with methyl jasmonate (MeJA) in Pinus pinaster progenies. The maternal trees of three independent genotypes were left untreated as a control (CNT) or subjected to either mechanical wounding (MW) or methyl jasmonate (MJ) during seed development. The observed maternal effects in the progeny operate on different levels in various pathways and biological processes. Additionally, the maternal environment seems to qualitatively influence and/or regulate defence-related and unrelated responses across at least one generation. Progenies originating from trees treated with MeJA seemed to exhibit an inherited induced resistance. In contrast, progenies derived from trees exposed to mechanical wounding displayed a priming response in comparison to progenies of the CNT maternal environment. We also observed that the genotype seems to predetermine the degree of maternal effects, especially in genes involved in epigenetics. To our knowledge, this study is the first of its kind and provides valuable evidence of maternal effects in P. pinaster progenies." @default.
- W2123089212 created "2016-06-24" @default.
- W2123089212 creator A5075874526 @default.
- W2123089212 date "2014-09-25" @default.
- W2123089212 modified "2023-09-27" @default.
- W2123089212 title "Maternal environment modulates the defence response in P. pinaster progenies" @default.
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