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Proteomics to identify resistance factors in corn-a review

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Abstract

The host resistance strategy for eliminating aflatoxins from corn has been advanced by the discovery of natural resistance traits such as proteins. This progress was aided by the development of a rapid laboratory-based kernel screening assay (KSA) used to separate resistant from susceptible seed, and for investigating kernel resistance.A. flavus GUS transformants have also been used, in conjunction with the KSA, to assess the amount of fungal growth in kernels and compare it with aflatoxin accumulation. Several proteins associated with resistance (RAPs) have been identified using 1 D PAGE. However, proteomics is now being used to further the discovery of RAPs. This methodology has led to the identification of stress-related RAPs as well as other antifungals. Characterization studies being conducted, including RNAi gene silencing experiments, may confirm roles for RAPs in host resistance.

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Authors and Affiliations

  1. Southern Regional Research Center, United States Department of Agriculture, Agricultural Research Service, 70179, New Orleans, Louisiana

    R. L. Brown & T. E. Cleveland

  2. USDA-ARS, Department of Plant Pathology and Crop Physiology, Louisiana State University, 302 Life Sciences, 70803, Baton Rouge, LA, USA

    Z. Chen

  3. International Institute of Tropical Agriculature, Ibadan, Nigeria

    A. Menkir

Authors
  1. R. L. Brown
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  2. Z. Chen
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  3. A. Menkir
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  4. T. E. Cleveland
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Corresponding author

Correspondence to R. L. Brown.

Additional information

Financial support USDA-CSREES-NRICGP, USDA-FAS-Scientific Cooperation Program, USAID-ARS Collaboration JSAID Lickage (HTA), USDA ARS Aflatoxin Working Group

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Brown, R.L., Chen, Z., Menkir, A. et al. Proteomics to identify resistance factors in corn-a review. Mycotox Res 22, 22–26 (2006). https://doi.org/10.1007/BF02954553

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