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Gewählte Publikation:

Puschenreiter, M; Türktaş, M; Sommer, P; Wieshammer, G; Laaha, G; Wenzel, WW; Hauser, MT; .
(2010): Differentiation of metallicolous and non-metallicolous Salix caprea populations based on phenotypic characteristics and nuclear microsatellite (SSR) markers.
Plant Cell Environ. 2010; 33(10):1641-1655 FullText FullText_BOKU

Abstract:
The Salicaceae family comprises a large number of high-biomass species with remarkable genetic variability and adaptation to ecological niches. Salix caprea survives in heavy metal contaminated areas, translocates and accumulates Zn/Cd in leaves. To reveal potential selective effects of long-term heavy metal contaminations on the genetic structure and Zn/Cd accumulation capacity, 170 S. caprea isolates of four metal-contaminated and three non-contaminated middle European sites were analysed with microsatellite markers using Wright's F statistics. The differentiation of populations North of the Alps are more pronounced compared to the Southern ones. By grouping the isolates based on their contamination status, a weak but significant differentiation was calculated between Northern metallicolous and non-metallicolous populations. To quantify if the contamination and genetic status of the populations correlate with Zn/Cd tolerance and the accumulation capacity, the S. caprea isolates were exposed to elevated Cd/Zn concentrations in perlite-based cultures. Consistent with the genetic data nested anova analyses for the physiological traits find a significant difference in the Cd accumulation capacity between the Northern and Southern populations. Our data suggest that natural populations are a profitable source to uncover genetic mechanisms of heavy metal accumulation and biomass production, traits that are essential for improving phytoextraction strategies.
Autor*innen der BOKU Wien:
Hauser Marie-Theres
Laaha Gregor
Puschenreiter Markus
Wenzel Walter
Find related publications in this database (using NML MeSH Indexing)
Air Pollutants;Alleles;Biodegradation, Environmental;Biomass;Cadmium/metabolism*;DNA, Plant;Europe;Genetic Variation/drug effects;Genetics, Population;Microsatellite Repeats*;Plant Leaves;Populus/drug effects;Populus/genetics;Populus/metabolism;Salix/drug effects;Salix/genetics*;Salix/metabolism*;Sequence Analysis, DNA;Soil Pollutants;Zinc/metabolism*;

Find related publications in this database (Keywords)
cadmium
cross-genera transferability
genetic diversity
microsatellite
Salix caprea
soil contamination
zinc


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