Leptosphaerulina trifolii

Many compounds with phytoalexin activity are also implicated in allelopathy between plants (Rice, 1984). For example, isoflavonoids are important phytoalexins (Ingham, 1982 Paxton, 1981 Dakora and Phillips, 1996) and allelochemicals (Tamura et al. 1967 1969) from the Leguminosae. Parbery et al. (1984) found that the isoflavonoids biochanin A, formononetin and genistein increased in subterranean clover by 62%, 123% and 75% respectively following infection by pepper spot (Leptosphaerulina trifolii). In comparison, Tamura et al. (1967 1969) isolated a succession of isoflavonoids (including biochanin A, formononetin and genistein) from the shoots of red clover (Trifolium pratense) that inhibited its own germination by 50% at concentrations of 50 ppm. 

Leach, C.M., An action spectrum for light induced sexual reproduction in the ascomycete fungus Leptosphaerulina trifolii, Mycologia, 64, 475,1972. 

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See also in sourсe #XX -- [ ]

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