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Key message Beech in original forest soil are colonized by higher ectomycorrhizal diversity and show better performance than those in γ-irradiated soil but no provenances-related differences. Abstract Knowledge on the effects of the intra-specific diversity of beech and inter-specific diversity of ectomycorrhizal fungal species (EMF) on the performance and nitrogen (N) uptake of beech (Fagus sylvatica...
Key message European beech presents intraspecific variations in drought resistance strategies that are mediated by the amount of precipitation in the habitat. Abstract Climate change predictions forecast extended drought periods, which are expected to pose an enhanced risk to forest trees. Here, we investigated the drought response and fitness traits in European beech (Fagus sylvatica L.) in response...
Black cottonwood (BC, Populus trichocarpa) and hybrid aspen (HA, P. tremula × tremuloides) differ in their ecology of being adapted to wet and drier conditions as riparian and early successional forest species, respectively. We tested the hypothesis that these ecological differences were reflected in higher nitrogen (N) use efficiency in HA than in BC and that HA would allocate more resources belowground...
Wood anatomy of five dipterocarp species endemic to the Philippines was studied with the goal to explore functional wood traits of ecological significance. Stem wood of 6-year-old trees grown under similar environmental conditions in a plantation (Leyte, Philippines) was used. Wood densities decreased in the following order Hopea plagata > Dipterocarpus kerrii > Parashorea malaanoman > Shorea almon ...
In a 16-day study, the effect of increasing soil NaCl on leaf photosynthesis, chlorophyll a fluorescence, chloroplast ion compartmentation, variations of SOD (superoxide dismutase) and POD (peroxidase) isoenzymes and the relevance to salt resistance were investigated in seedlings of Populus euphratica Oliv. (P. euphratica) (salt-resistant) and rooted cuttings of P. “popularis 35–44” (P. popularis)...
Populus × euramericana, P. alba, and P. nigra clones were exposed to ambient or elevated (about 550 ppm) CO2 concentrations under field conditions (FACE) in central Italy. After three growing seasons, the plantation was coppiced. FACE was continued and in addition, one-half of each experimental plot was fertilised with nitrogen. Growth and anatomical wood properties were analysed in secondary sprouts...
Abstract. Wild-type hybrid poplar (Populus tremula P. alba) plants and transgenic lines over-expressing glutathione reductase (GR) either in the cytosol (ca. 5-fold) or in the chloroplast (150- to 200-fold) or glutathione synthetase (GSS) in the cytosol (ca. 200-fold) were exposed for 3days to ambient air or air containing 300 nl l1 ozone for 7h day1. The contents and oxidation state of antioxidants...
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