Effect of Spumol K on cell wall of Aspergillus niger strains characterized by different tolerance to toxic compounds of beet molasses.
Cell walls in the mycelium of Aspergillus niger strains sensitive or resistant to toxic molasses compounds growing in the presence of Spumol K were the object of the present studies. Although the inhibitory effect of Spumol K on the cell wall was noticed in studied mycelia the sensitive strains reacted more strongly. In sensitive strains in Spumol K presence lower content of cell wall was accomplished by higher amount of proteins but lower of lipids as well as structural polymers i.e. of glucans and chitin in this wall. A weaker synthesis of chitin and lower level of cell wall enzymes, especially chitinase, were observed in these strains. The described changes seem to be responsible for the growth inhibition and mycelium sinking in sensitive strains of A. niger.
Gabara
B
B
Department of Plant Cytology and Cytochemistry, University of Lódź, Poland.
Zakowska
Z
Z
D000934:Antifoaming Agents / Q000633:toxicity*; D001234:Aspergillus niger / Q000187:drug effects* / Q000254:growth & development / Q000378:metabolism; D002473:Cell Wall / Q000187:drug effects*; D002686:Chitin / Q000378:metabolism; D002688:Chitinases / Q000378:metabolism; D005656:Fungal Proteins / Q000378:metabolism; D005936:Glucans / Q000378:metabolism; D050356:Lipid Metabolism; D008965:Molasses / Q000633:toxicity*
D000934:Antifoaming Agents; D005656:Fungal Proteins; D005936:Glucans; D002686:Chitin; D002688:Chitinases