Structure cristalline et moleculaire de la phomenone, phytotoxine produite par le champignon .

The structure and absolute configuration of PR toxin

“…Moreover the absolute configuration corresponds to the eremophilane type. Such a configuration has already been found for a fungi metabolite of this type (Riche, Pascard-Billy, Devys, Gaudemer, Barbier & Bousquet, 1974). Fig.…”

An enzyme immunoassay of phaseolinone and its application in estimation of the amount of toxin in Macrophomina phaseolina-infected seeds

“…Biogenetic precursors of phaseolinone with close structural similarity may cross-react with phaseolinone. We have isolated from M. phaseolina one such putative precursor, phomenone, isolated earlier from Phoma e-xigua (13). However, these biosynthetic precursors are expected to be less polar than phaseolinone.…”

Phytotoxins and Plant Pathogenesis

“…Phytotoxins belonging to this group are phaseol inone from Maerophomina phaseolina (Dhar et aL, 1982) and Dreehslera gigantea ; gigantenone and petasol from D. gigantea (Kenfield et aL, 1989c;Sugawara et aL, 1993); phomenone from Phoma exigua (Riche et aL, 1974), P. destruetiva (Bottalico et aL, 1982), and D. gigantea ; and bipolaroxin from Bipolaris eynodontis (Sugawara et aL, 1985). Eremophilanes -Gigantenone, petasol, phomenone, phaseolinone, and bipolaroxin Eremophilanes are bicyclic sesquiterpenoids.…”