EFFECTS OF ALUMINUM ON MINERAL-CONTENT OF MYCORRHIZAL FUNGI IN-VITRO

The influence of Al3+ on the mineral content of mycorrhizal fungi was studied in vitro. Amanita muscaria (L. ex Fr.) Pers. ex Hooker whose growth is reduced and Lactarius piperatus (L.,. ex Fr.) S.F. Gray whose growth is stimulated by Al3+ where chosen for the experiments. 0, 0.1, 1, and 10mM Al3+ were added as Al-2(SO4)(3) . 18H(2)O to modified M-40 medium. Al3+ drastically affected the mineral contents of the mycelia of both fungi: the Al, Ca, and Na contents increased while P, Mg, and K decreased with the increasing Al3+ concentrations in the media. On the other hand, some important differences between the two mycelia were detected. In the mycelia of Lacterius piperatus grown on the control media, there was about twice as much Ca content and a three times lower P content than in the Amanita muscaria mycelia. The Al3+ content in the mycelia of Lactarius piperatus grown on 10mM Al3+ was six times higher than in Amanita muscaria at the same concentration.