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THE RELATION BETWEEN FUSARIUM SOLANI THE CAUSAL OF CITRUS ROOT ROT TOXINS AND ITS PATHOGENICITY. | ||
| The Iraqi Journal of Agricultural Science | ||
| Article 1, Volume 40, Issue 3, 2009, Pages 63-77 | ||
| Authors | ||
| WADEJA M. KUTHAIR; KAMIL S. JUBER | ||
| Abstract | ||
| This experiment intended determination of the role of Fusarium solani in its virulence. The results showed that spores suspention of the pathogenic isolates induced significant increment in disease severity , isolate DF 7 was the superior (100%) while other tested isolates were 25%-91.7% as compared to control treatment 0%. Heated and unheated culture filterates of two F.solani isolates showed toxigenic effects on sour orange (Citrus aurantium L(. seedling and the toxicity was found to be the concentration and isolate dependence (25%,50%,75% and 100%). The culture filtrate of the isolate Df 7 heated and unheated treatments were more toxic when used at 100% concenration. Thin Layer Chromatography technique for F.solani culture filtrate showed the separation of several compounds in many different colors (purple ,yellow , light and orange) and Rf valus and according to certain puplications we suggested that the purple color represented anhydrofusarubin toxin, the red color represented fusarnbin toxin. However both toxins are from naphthazarin group. The separated toxin exhibited radish root growth inhibition, the mean percentage of root inhibition in the treatments of separated compounds ranged 43.51%-67.51% while it was 0% in the control treatment and caused disease severity on 30 day old sour orange seedlings, the mean percentage of disease severity in their treatments was 46.57%-67.39% compared with 0% in the control treatment. | ||
| Main Subjects | ||
| University of Anbar | ||
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