Transgenerational Induction of Resistance to Phytophthora cinnamomi in Holm Oak

摘要: The maternal environment of a tree species can influence the development and resistance its offspring. Transgenerational induction is well known in plants but occurrence forest has been less reported. Quercus ilex L. (holm oak) widespread Mediterranean threatened by invasive Phytophthora cinnamomi Rands pathogen. P. on offspring infected Q. mother trees not studied. This study compared performance tolerance to seedlings from non-infected cinnamomi-infected trees. Acorns were collected five forests. After isolations conducted rhizosphere several trees, each forest, three selected as cinnamomi-infected. Forty acorns per weighed sown under greenhouse conditions, when aged ~9 months they challenged with cinnamomi. Plant mortality was higher than (26.2% vs. 21.1%, respectively). Consistently, survival probabilities those particularly reduced growth. Although healthy heavier time death inoculated influenced seed weight. positively related belowground mass, an increased proportion fine secondary roots. We report transgenerational-induced triggered unknown mechanism independent acorn mass. Information about persistence transgenerational effects these plant fitness crucial improve management regeneration this declining species.