ibclogo XVI International Botanical Congess


Abstract Number: 5549
Session = 20.10.7


ARBUSCULAR MYCORRHIZA AND COMPLEX STRESS INDUCED BY ACID RAIN AND HEAVY METALS


Miroslav Vosatka, Institute of Botany, Academy of Sciences, 252 43 Pr_honice, Czech Republic


A huge transboundary region including part of the Czech Republic, Germany and Poland called The black triangle" belong to the most polluted areas in the Europe. Heavy industry, coal mining and coal-fired power station have led to build-up of both air pollutants and deposits of wastes containing heavy metals, what consequently affects the ecosystems and causes significant changes in plant communities and populations of soil microorganisms. Field studies showed that the occurrence and distribution of arbuscular mycorrhizal fungi (AMF) are related to the spreading of expansive grasses in acid rain polluted forests and on the deposits of industrial wastes. The AMF isolates from polluted soils undergone a strong selection pressure induced by chronic and complex stress and they showed adaptation to harmful conditions. The functional aspects of AMF associations with grasses was verified in series of microcosms experiment indicating a possible role of AMF in coexistence of plants and in adaptation of plants to polluted soils in degraded ecosystems.


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