Structure of the host-specific pathotoxins produced by Helminthosporium maydis, race T

✍ Scribed by Y. Kono; S. Takeuchi; A. Kawarada; J.M. Daly; H.W. Knoche

• Book ID: 104225509
• Publisher: Elsevier Science
• Year: 1980
• Tongue: French
• Weight: 254 KB
• Volume: 21
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(00)92768-0

✦ Synopsis

Polyketo-polyalcohol structures of the host-specific pathotoxins (Band l-and Band 2-toxins) from Helminthosporium maydis, race T were elucidated by NMR analysis and chemical degradations. The phytopathogenic fungus Helminthosporium maydis, race T, produces a complex of chemically analogous host-specific pathotoxins that have specific blighting effect on leaves of sensitive corn. We have earlier isolated four toxins from this origin, examined their physicochemical properties and proposed a tentative polyketo-polyalcohol structure for one of 1) them, Band l-toxin, which is the principal component of the toxin complex . However, the precise positions of the oxygen groups on the long-chain carbon skeleton have not been established.