Popis: |
SUMMARY: Microelectrophoresis has shown surface lipid to be present on conidia of Alternaria tenuis, Botrytis fabae and Neurospora crassa and on sporangiospores of Rhizopus stolonifer. Surface lipid is absent from conidia of Erysiphe cichoracearum, E. graminis, Nectria galligena, Penicillium expansum and Verticillium albo-atrum and sporangiospores of Mucor rouxii. The compositions of the fatty acid and hydrocarbon fractions of the surface and wall lipids from the same organisms are different. The fatty acids are mainly straight-chain and even carbon-numbered. Palmitic and stearic acids predominate. Polyunsaturated acids were absent. Surface hydrocarbons consist almost entirely of n-alkanes but wall fractions are more complex. An equal distribution of odd and even carbon-numbered alkanes occurs in both the surface and wall lipid fractions. |