| Abstract: | From mutants of the fungusVerticillium tricorpus Isaac., having various genetic blocks in the biosynthesis of melanin, we have isolated and identified scytalone, flaviolin, 3,3 -biflavinolin, 2-hydroxyjuglone, vermelone, and 1,8-dihydroxynaphthalene, which, in combination with the results of complementation analysis, has enabled the main stages of the biosynthesis of melanin inV. tricorpus to be established. The results on the inhibition of the biosynthesis of melanin by tricyclazole in natural isolates ofV. tricorpus indicates that the initital stages of the biosynthesis of melanin inV. tricorpus up to the formation of 1,3,8-trihydroxynaphthalene are identical with those ofVerticillium dahliae.V. I. Lenin State University, Tashkent. Division of General Genetics of the Cotton Plant, Academy of Sciences of the TadzhSSR, Dushanbe. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 486–492, July–August, 1985. |
