Inverse Correlation of Ability to Produce Aflatoxin and Aspergillus Colonization of Maize Seed

نویسندگان

  • Kenneth C. Ehrlich
  • Qijian Wei
  • Robert L. Brown
  • Deepak Bhatnagar
چکیده

Seeds of aflatoxin-resistant and aflatoxin-susceptible maize lines were inoculated with conidia of aflatoxin-producing Aspergillus flavus or A. parasiticus isolates or isogenic non-producing mutants. Conidia were recovered from resistant maize seed after seven days in significantly lower amounts for aflatoxin-producing A. flavus and A. parasiticus strains than for isogenic mutants incapable of aflatoxin production. This result helps to explain why, in currently used biocontrol strategies for aflatoxin elimination, non-aflatoxigenic isolates are able to out-compete aflatoxin-producing isolates for invasion of the seed.

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تاریخ انتشار 2011