In this study, heat treatment was carried out in a relatively low temperature (230 ̊C). Mass loss kinetics was studied using equipment, specially conceived to measure sample’s mass during the thermal treatment. Laboratory experiments were performed for heating rates of 1 ̊C min-1. Mathematical model for kinetics of pyrolysis process was used and validated. During the pyrolysis of dry wood samples...

A 3-decalinoyltetramic acid, for which the trivial name hymenosetin is proposed, was isolated from crude extracts of a virulent strain of the ash dieback pathogen, Hymenoscyphus pseudoalbidus (="Chalara fraxinea"). This compound was produced only under certain culture conditions in submerged cultures of the fungus. Its planar structure was determined by NMR spectroscopy and by mass spectrometry...

Question: Are populations of two sawfly species adapted to individual host trees? Hypothesis: The adaptive deme formation hypothesis suggests that selection may lead to populations (demes) adapted to host individuals. Organisms: Larvae of the black sawfly Tomostethus nigritus and the privet sawfly Macrophya punctumalbum (Hymenoptera: Tenthredinidae) living on ash (Fraxinus excelsior). Methods: ...

The waterlogging tolerance and the physiological responses to this stress were tested in seedlings of Fraxinus angustifolia, an ash tree inhabiting riparian forests, and two provenances of the closely related Fraxinus excelsior, one derived from a riparian forest (FER) and one from a mountainous region (FEM). Besides visible damage, physiological parameters reflecting adaptations of plants to w...

The species diversity of culturable endophytic fungi was studied in the leaves and twigs symptomatic asymptomatic Fraxinus excelsior trees. Endophytic mycobiota dominated by Ascomycota species, with Pleosporales (44.17%) Diaporthales (23.79%) endophytes being most frequently observed tree samples. number isolates richness varied depending on sampling date (May October) tissue location. Of 54 id...