Scientific publications

The diversity and morphological and anatomical structure of P. sylvestris ectomycorrhizae under air-borne industrial pollution of soils with lead compounds was studied. Gross lead content being 3–4-fold higher than the MPC, no suppression of the micorrhization process was observed. The concentration of the metal was found to have effect on the density of certain forms of ectomycorrhizae and their anatomical parameters. Where gross lead content in the upper soil layer was equal to 3 MPC, there was an increase in the density of the tuberous form, while at 4x MPC the simple form gained in density. The density of the other forms of micorrhizae varied depending on the depth of formation,while the heave metal concentration only added to this eff ect. As the metal storage rose to 4x MPC, the proportion of root tips increased by 5 %. As the pollutant accumulated in top 20 cm of the soil profi le, the number of root tips of type B declined. The formation of plectenchymal root tips was inhibited (by 18 %) and the amount of pseudoparenchymal root tips slightly increased (6 %).