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| Titel |
Evaluation of aluminum and silicon accumulation on species of genus Amanita depending on soil characteristics |
| VerfasserIn |
Juan Antonio Campos Gallego, Rosario García Moreno |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250037960
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| Zusammenfassung |
| Ectomycorrhizal fungi, as different species of the Genus Amanita, have the potential to attack
the mineral particles of soil, especially clay, and actively mobilize and translocate plant
nutrients, as well as toxic elements, from minerals. At field conditions, the mineral
composition of the bed rock and texture could determine which elements are going to be
released to the environment and the relative amounts of each specific substance. In this sense,
the study of the relationship of ectomycorrizal fungi and soils is of great importance
since the uptake of substances could determine potential toxicity on soil biota. In
order to evaluate the potential relationship between substrate and fungi, the authors
studied aluminum and silicon content found in seven different species of mycorrhizal
fungi of the Genus Amanita. The sampling areas were located in the forest area of
the region of Ciudad Real, Centre Region of Spain. All sampling locations had in
common a quartzite acid substrate but with differences in texture and shale content. As
regards the relationship of fungi with inorganic substrate, the relative presence of
the clay is of great importance since they are easily altered by the acid attack of
fungi. The results indicated large fluctuations in content of aluminum and silicon
among the different species of Amanita and sampling locations. The mean values of
concentrations in the studied fungi species ranged between 0.243 g kg 1and 2.240 g kg
1for aluminum and between 0.550 g kg 1 and 6.493 g kg 1for silicon. The highest
values for the accumulation of aluminium were found for Amanita citrina, while
Amanita phalloides showed the highest concentration in silicon. Both species were
collected in the area of Saceruela, which possess the highest sand content and the
predominant mineral content is quartzite. The results showed that the content of silicon and
aluminum found in different Amanita species was highly significant correlated to
the texture and silicon content of soil, as well as physiological specificity among
species. |
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