Growth of in vitro Fusarium oxysporum f. sp. niveum in chemically defined media amended with gallic acid

• HONG-SHENG WU ^[1] ; YANG WANG ^[1] ; CHAO-YONG ZHANG ^[1] ; WEI BAO ^[1] ; NING LING ^[1] ; DONG-YANG LIU ^[1] ; QI-RONG SHEN ^[1]
  1. [1] Nanjing Agricultural University

     Nanjing Agricultural University

     China

     
• Localización: Biological Research, ISSN-e 0717-6287, ISSN 0716-9760, Vol. 42, Nº. 3, 2009, págs. 297-304
• Idioma: inglés
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• Resumen

  • Gallic acid was artificially added to the media to grow Fusarium oxysporum f.sp.niveum to investigate its effect on the pathogenic fungus. Results indicate that gallic acid inhibited the growth of F. oxysporum f.sp.niveum. The colony diameter, the conidia germinating rate and the conidia yield were reduced by 5.7-22.9%%, 35.8-55.6% and 38.9-62.2% respectively. However, the virulence factors by the fungus were stimulated. The activity of pectinase, proteinase and cellulase increased by 12.3-627.8%, 11.8-41.2% and 0.5-325.0% respectively, while the activity of amylase increased slightly. The results suggest that gallic acid repressed growth but facilitated the relative pathogenicity of invading pathogens.