Effect of atmospheric sulphur dioxide on the phylloplane mycoflora of conifer needles : Air Pollution and Forest Decline. 14th International Meeting for Specialists in Air Pollution Effects on Forest Ecosystems

1989

S. 457-459

12 Lit. Ang., En, Zfsg. En

Unselbständiges Werk

200034786

Tagungsberichte / IUFRO 1989, S. 457-459

The dominant mycoflora populations on the needle surfaces of conifers included Aureobasidium pullulans, Sclerophoma pithiophyla, Epicoccum nigrum and Cladosporium spp.. In open air fumigation with sulphur dioxide (SO2), the total fungal populations were markedly reduced by mean concentrations of 10 and 20 ppb. In vitro experiments suggest that the tolerance of phylloplane fungi to SO2 varies with species. Of a range of phylloplane fungi, A. pullulans, Botrytis cinera and S. pithiophyla grew best at low pH (2,5 - 3,0). The possible implications of these results are discussed.