title: Ultrastructural and chemical distinction of melanins formed by Verticillium dahliae from (+)-scytalone, 1,8-dihydroxynaphthalene, catechol, and L-3,4-dihydroxyphenylalanine.
abstract: Microsclerotia of three melanin-deficient mutants of Verticillium dahliae formed malanin from (+)-scytalone, 1,8-dihydroxynaphthalene, catechol, and L-3,4-dihydroxyphenylalanine. The melanins formed from (+)-scytalone or 1,8-dihydroxynaphthalene resembled wild-type melanin chemically and ultrastructurally, whereas the melanins formed from catechol and L-3,4-dihydroxyphenlalanine were different. This suggests that scytalone and 1,8-dihydroxynaphthalene but no catechol or L-3,4-dihydroxyphenylalanine are natural intermediates of melanin biosynthesis in V. dahliae.
mesh_terms: D002396:Catechols / Q000378:metabolism*; D007980:Levodopa / Q000378:metabolism*; D008543:Melanins / Q000032:analysis / Q000096:biosynthesis*; D003904:Mitosporic Fungi / Q000378:metabolism* / Q000648:ultrastructure; D009154:Mutation; D009284:Naphthols / Q000378:metabolism*
chemical_list: D002396:Catechols; D008543:Melanins; D009284:Naphthols; C012547:scytolone; D007980:Levodopa