体外培养的尖孢镰刀菌西瓜专化型对苯甲酸的生理生化响应
Physiological and biochemical responses of in vitro Fusarium oxysporum f.sp. niveum to benzoic acid.
作者信息
Wu H-S, Wang Y, Zhang C-Y, Gu M, Liu Y-X, Chen G, Wang J-H, Tang Z, Mao Z-S, Shen Q-R
机构信息
College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210 095, China.
出版信息
Folia Microbiol (Praha). 2009;54(2):115-22. doi: 10.1007/s12223-009-0017-6. Epub 2009 May 6.
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.
评估了人工施加的化感物质苯甲酸对体外尖孢镰刀菌西瓜专化型（一种引起西瓜枯萎病的土传病原菌）的化感潜力。苯甲酸强烈抑制其生长、孢子形成和分生孢子萌发，而它却刺激了这种病原菌的致病因子。在浓度>200mg/L时，生物量减少了83%-96%，分生孢子萌发率和分生孢子产生率下降了100%。然而，植物致病酶活性和霉菌毒素产量却受到刺激，酶活性增加了10.2%-1250%，霉菌毒素产量增加了610%-2630%。
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