Alternaria brassicicola

Fig. 9.4 Chemical structures of the selective phytotojdns 11 and 12 produced by mustard virulent isolates of Alternaria brassicicola and A. brassicae, respectively. Phytotoxins 11 and 12 are produced in a chemically defined medium...

Pedras MSC, Chumala PB, Jin W, Islam MS, Hauck DW (2009) The phytopathogenic fungus Alternaria brassicicola phytotoxin production and phytoalexin elicitation. Phytochemistry 70 394-402... 

C,H,604, Mr 212.25, oil, [a]g -35.8° (CH,OH). A phytotoxin from cultures of Alternaria brassicicola and Nimbya scirpicola. D. effects the conversion of tumor cells (fibroblasts) transformed by ras-oncogenes back to normal cells. D. changes the structure of the cytoskeleton. 

EFFECTS OF HEXACONAZOLE ON THE PLASMA MEMBRANES OF ALTERNARIA BRASSICICOLA... 

The Alternaria black spot fungi A. brassicae and A. brassicicola produce host-selective toxins as well. While A. brassicicola produces brassicicolin A (11) as the major host-selective phytotoxin [28], A. brassicae produces destruxin B (12) (Fig. 9.4) [29]. Consistent with the virulence of these phytopathogens, both brassicicolin A (11) and destruxin B (12) appeared to be more phytotoxic to the susceptible cruciferous species B.juncea than to the tolerant B. napus. 

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