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Fusarium verticillioides from sugarcane, vegetative compatibility groups and pathogenicity

Author

Listed:
  • Abbas Mohammadi

    (Department of Plant Pathology, Faculty of Agriculture, Birjand University, Birjand, Iran)

  • Reza Farrokhi Nejad

    (Department of Plant Pathology, Faculty of Agriculture, Shahid Chamran University, Ahwaz, Iran)

  • Nasrin Noras Mofrad

    (Faculty of Agriculture, Islamic Azad University Birjand Branch, Birjand, Iran$2)

Abstract

Sugarcane plant samples affected by the disease pokkah boeng were collected from the major sugarcane producing areas in Iran. Fifty isolates of Fusarium verticillioides were recovered from diseased sugarcanes. Results of pathogenicity tests revealed that all isolates were pathogenic to sugarcane. Four hundred and eighty-five nitrate non-utilising mutants were generated from F. verticillioides isolates. Media used for nit mutant generation included potato dextrose agar, minimal medium and Czapeck agar amended with 1.8%, 2%, 2.5%, and 3% potassium chlorate. Nit mutants were divided into three phenotypic (nit1, nit3, and nitM) classes based on their growth on different nitrogen sources in the culture media. Among the isolates tested, 280, 115 and 90 nit1, nit3, and nit M were generated, respectively. Nit mutants were used to force the heterokaryon formation to determine the distribution of VCGs and their relation to pathogenicity and geographic origin. Forty-eight VCGs of F. verticillioides were isolated from sugarcane. Forty-six of the VCGs were represented by a single isolate, whereas the remaining two comprised two isolates. None of the VCGs was common.

Suggested Citation

  • Abbas Mohammadi & Reza Farrokhi Nejad & Nasrin Noras Mofrad, 2012. "Fusarium verticillioides from sugarcane, vegetative compatibility groups and pathogenicity," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 48(2), pages 80-84.
    • Handle: RePEc:caa:jnlpps:v:48:y:2012:i:2:id:49-2011-pps
    DOI: 10.17221/49/2011-PPS
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    Keywords

    pokkah boeng; Fusarium; mutant; nit;
    All these keywords.

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