Isolation and identification of cultivated bacteria associated with soybeans and their biocontrol activity against Phytophthora sojae

One hundred bacteria, isolated from rhizospheric soil and rhizoplane of healthy soybean plants, were assayed for antifungal activity against six Phytophthora sojae isolates

Arbia Arfaoui; Lorne R. Adam; Abdellah Bezzahou; Fouad Daayf

2018

Scholarcy highlights

  • One hundred bacteria, isolated from rhizospheric soil and rhizoplane of healthy soybean plants, were assayed for antifungal activity against six Phytophthora sojae isolates
  • Nine of the tested bacteria inhibited the hyphal growth of P. sojae in vitro
  • Results showed that application of bacterial strain S11 as seed coating reduced the disease severity by 57.1% and increased the root and shoot weight by and 140 and 108% respectively, in comparison to the diseased control
  • A positive correlation was recorded between the in vitro and in planta effects of the selected bacteria. This is promising for further application as select environmentally safe biological control agents in the protection of soybean against root rot diseases

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