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Título: | Environmental Maternal Effects Mediate the Resistance of Maritime Pine to Biotic Stress |
Autor: | Vivas, María; Zas Arregui, Rafael CSIC ORCID; Sampedro Pérez, Luis CSIC ORCID; Solla, Alejandro | Palabras clave: | Epigenetics Genetically modified plants Necrosis Phylogenetic analysis Pines Plant-herbivore interactions Seedlings Seeds |
Fecha de publicación: | 26-jul-2013 | Editor: | Public Library of Science | Citación: | PLoS ONE 8(7):1-8 (2013) | Resumen: | The resistance to abiotic stress is increasingly recognised as being impacted by maternal effects, given that environmental conditions experienced by parent (mother) trees affect stress tolerance in offspring. We hypothesised that abiotic environmental maternal effects may also mediate the resistance of trees to biotic stress. The influence of maternal environment and maternal genotype and the interaction of these two factors on early resistance of Pinus pinaster half-sibs to the Fusarium circinatum pathogen was studied using 10 mother genotypes clonally replicated in two contrasting environments. Necrosis length of infected seedlings was 16% shorter in seedlings grown from favourable maternal environment seeds than in seedlings grown from unfavourable maternal environment seeds. Damage caused by F. circinatum was mediated by maternal environment and maternal genotype, but not by seed mass. Mechanisms unrelated to seed provisioning, perhaps of epigenetic nature, were probably involved in the transgenerational plasticity of P. pinaster, mediating its resistance to biotic stress. Our findings suggest that the transgenerational resistance of pines due to an abiotic stress may interact with the defensive response of pines to a biotic stress. | Versión del editor: | http://dx.doi.org/10.1371/journal.pone.0070148 | URI: | http://hdl.handle.net/10261/98580 | DOI: | 10.1371/journal.pone.0070148 | ISSN: | 1932-6203 | E-ISSN: | 1932-6203 |
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