Physiological and biochemical responses of <Emphasis Type="Italic">in vitro Fusarium oxysporum</Emphasis> f.sp. <Emphasis Type="Italic">niveum</Emphasis> to benzoic acid |
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| Authors: | H -S Wu Y Wang C -Y Zhang M Gu Y -X Liu G Chen J -H Wang Z Tang Z -S Mao Q -R Shen |
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| Institution: | (1) College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210 095, China;(2) Jiangsu Key Laboratory for Solid Organic Waste Utilization, Nanjing, 210 095, China;(3) Nanjing University of Information Science and Technology, Nanjing, 210 044, China |
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| Abstract: | The allelopathic potential of an artificially applied allelochemical, benzoic acid, on in vitro Fusarium oxysporum f.sp. niveum (a soil-borne pathogen causing watermelon wilt) was evaluated. Benzoic acid strongly inhibited its growth, sporulation and
conidia germination, whereas it stimulated virulence factors of this pathogen. The biomass was reduced by 83–96 % and the
conidia germinating rate and conidia production rate were decreased by 100 % at a concentration of >200 mg/L. However, phytopathogenic
enzyme activities and mycotoxin production were stimulated with an increase of 10.2–1250 % for enzyme activities and 610–2630
% for mycotoxin yield. |
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