Evidence for an expanded host range of Fusarium oxysporum f.sp raphani

The pathogenicity of four isolates of Fusarium oxysporum obtained from infected cultivated rocket (Eruca vesicaria) and wild (sand) rocket (Diplotaxis tenuifolia) was tested on the following cruciferous hosts: stock, radish, wild and cultivated rockets, and various species in the cabbage tribe: cabbage (Brassica oleracea var. sabauda), cauliflower (Brassica oleracea var. botrytis), Brussels sprouts (Brassica oleracea var. gemmifera), broccoli (Brassica oleracea var. italica), turnip (Brassica rapa var. rapa). The results indicated that isolates of F oxysporum from cultivated and wild rocket belong to the forma specialis raphani. The isolates from rocket were pathogenic on cabbage, Brussels sprouts, broccoli, turnip, radish and stock; isolates of E oxysporum conglutinans from cabbage and radish, and the isolate of F oxysporum f.sp. raphani from rape obtained from the ATCC collection, were pathogenic on both cultivated and wild rocket.