Dictyostelium purpureum

The cellular slime mold Dictyostelium purpureum K1001 contains AB0022A (2255), a novel antibacterial dibenzofuran, the structure of which was confirmed by total synthesis (2038). The lichen Lecanora cinereocarnea has yielded several new dibenzofurans, including three chlorinated analogues (2256-2258) (2039), and Lecanora iseana contains 2259 and 2260 (2040). The first naturally occurring polybrominated dibenzofuran, corallinafuran (2261), is present in a crustose coralline red alga that also contains corallinaether (1913) cited earlier (1769). 

Phycomyces is by no means the only organism that can regulate its own growth with volatile substances. Bonner and Dodd (1962) have reported that Polysphondilium pallidum,Dictyostelium discoideum,D. mucoroides,D. purpureum have the capacity to avoid obstacles. A series of experiments has clearly shown that this orientating effect is due to a gas made by the organism. Attempts to identify this gas have been unsuccessful. 

Extracts from cohesive cells of four species of cellular slime mould Dictyostelium mucoroides, D. purpureum, D. rosarium, and Polysphondylium violaceum) agglutinated erythrocytes in a manner akin to D. discoideum. The lectin from Polysphondylium pallidum has been purified to homogeneity by adsorption onto formalinized erythrocytes it has a subunit of molecular weight 2.4 X 10 and appears to differ from the lectins isolated from other slime moulds. ... 

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