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Dry-air drying at room temperature - a practical pre-treatment method of tree leaves for quantitative analyses of phenolics?

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BACKGROUND In ecological experiments, storage of plant material is often needed between harvesting and laboratory analyses when the number of samples is too large for immediate, fresh analyses. Thus, accuracy and comparability of the results call for pre-treatment methods where the chemical

Screening analyses of pinosylvin stilbenes, resin acids and lignans in Norwegian conifers.

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The content and distribution of stilbenes and resin acids in Scots pine (Pinus sylvestris) and spruce (Picea abies), sampled in central Norway, have been examined. The contents of pinosylvin stilbenes in pine heartwood/living knots were 0.2-2/2-8 %(w/w). No stilbenes could be detected in spruce

Polychlorinated biphenyl (PCB)-degrading bacteria associated with trees in a PCB-contaminated site.

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The abundance, identities, and degradation abilities of indigenous polychlorinated biphenyl (PCB)-degrading bacteria associated with five species of mature trees growing naturally in a contaminated site were investigated to identify plants that enhance the microbial PCB degradation potential in

Rhizosphere dynamics during phytoremediation of olive mill wastewater.

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The potential of phytoremediation as a treatment option for olive mill wastewater (OMW) was tested on five perennial tree species. Cupressus sempervirens and Quercus ilex proved tolerant to six-month OMW treatment followed by six-month water irrigation, whereas Salix sp. and Laurus nobilis and,

Accumulation of sulfur and heavy metals in soil and tree leaves sampled from the surroundings of Tuncbilek Thermal Power Plant.

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In this study, the quantities of sulfur and heavy metals, resulting from the Tuncbilek Thermal Power Plant (TPP) in Turkey, have been assessed in tree leaves and soil samples within a 10 km radius of the plant. Leaves of Salix alba L., Populus tremula L., Robinia pseudoacacia L., Quercus infectoria

The impact of uranium mine contamination of soils on plant litter decomposition.

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As part of a tier 3 risk assessment performed for a uranium mining area, the ability of soils with different degrees of metal contamination to degrade organic matter was assessed using litter bags filled with leaves of Quercus robur, Pinus pinaster, Salix atrocinerea, or a mixture of the three

Air-pollutant dispersal patterns and vegetation damage in the vicinity of three aluminium smelters in Norway.

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Dispersal patterns for fluoride and damage to vegetation was studied near three aluminium smelters in Norway. Leaf samples from three broad-leaved species (Betula pubescens Ehrh., Salix caprea L. and Sorbus aucuparia L.) were collected and leaf injury and the plants overall vitality were evaluated

The mechanism of pollination drop withdrawal in Ginkgo biloba L.

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BACKGROUND The pollination drop (PD) is a characteristic feature of many wind-pollinated gymnosperms. Although accumulating evidence shows that the PD plays a critical role in the pollination process, the mechanism of PD withdrawal is still unclear. Here, we carefully observed the PD withdrawal

Root penetration through sealing layers at mine deposit sites.

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To prevent acid mine drainage arising from oxygen and water penetration of sulphide-rich mine tailings, the tailings are covered with layers of dry sealing material. Plant roots have a great ability to penetrate dense materials, and if the roots are able to penetrate the sealing layer of a tailings

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