A leaf spot disease was observed attacking some Magnolia aff. candollei plants grown in a private garden in the city of Rio de Janeiro, RJ, Brazil. Such leaf spots coalesced and led to extensive blight of foliage. A fungus was clearly associated to the disease symptoms and was identified as Botryosphaeria ribis. Its anamorph, Fusicoccum ribis, was also present, although less abundant than the t...

Our search for new metabolites biosynthetically related to fusicoccin with potent plant growth-stimulating activity from the culture filtrate of Fusicoccum amygdali F6 resulted in the isolation of a new derivative of fusicoccin J, as well as fusicoccin J and 16-O-demethyl 3-epifusicoccin J. Its structure was analyzed by 600 MHz NMR spectrometry and identified as 16-O-demethyl fusicoccin J. The ...

A 12-yr study of fungi associated with Cannabis has revealed that many taxa cited in the Cannabis literature are based on misdeterminations or synonyms of species with wide host ranges (McPartland, 1992, 1994b, 1995b). New species have been discovered – Phomopsis ganjae (McPartland, 1983), Schiffnerula cannabis (McPartland&Hughes, 1994a), Fusicoccum marconii, Leptodothiorella marconii (McPartla...

Our search for new polar f"siceccins biosynthetically related to fusicoccin A from the culture filtrate of isolate Niigata 2-A of a peach Fusicoccum canker fungus resutted in the iso]atiofi of new fusicoccins named fusicocci"s P and Q, and 3-epifusicoccins H and Q, together with 3'-deacetylf"sicoccin A and 16-Odemethyl-3-epifusicoccin J. The structures of fusicoccins P and Q, and of 3-epifuslco...

The main goal of this work was to detect whether Cytospora chrysosperma and Fusicoccum eucalypti are present as endophytes of symptomless hypocotyls, cotyledons, flowers, capsules, peduncles of flowers in order to interpret an earlier finding of their presence in seeds, seedling stems and twigs of E. globulus. Segments from these organs as well as from bark and the xylem from flower peduncles w...