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United States Department of Agriculture

Agricultural Research Service

Research Project: AFLATOXIN CONTROL THROUGH TARGETING MECHANISMS GOVERNING AFLATOXIN BIOSYNTHESIS IN CORN AND COTTONSEED

Location: Food and Feed Safety Research

Title: The Use of Crop Proteomics and Fungal Genomics in Elucidating Fungus-Crop Interactions

Authors
item Cleveland, Thomas
item Yu, Jiujiang
item Chen, Z.-Y. - LSU BATON ROUGE
item Brown, Robert
item Cary, Jeffrey
item Rajasekaran, Kanniah
item Bhatnagar, Deepak
item Campbell, Bruce
item Nierman, William - TIGR
item Payne, Gary - NCSU

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: December 1, 2006
Publication Date: December 30, 2006
Citation: Cleveland, T.E., Yu, J., Chen, Z., Brown, R.L., Cary, J.W., Rajasekaran, K., Bhatnagar, D., Campbell, B.C., Nierman, W.C., Payne, G.A. 2006. The Use of Crop Proteomics and Fungal Genomics in Elucidating Fungus-Crop Interactions. In: Proceedings of the Myco-Globe Conference, September 26-30, 2006, Bari, Italy. p. 32.

Technical Abstract: Understanding the complex interrelationships of plant and fungal gene products during the host plant-Aspergillus flavus interaction is key in developing strategies to interrupt the aflatoxin contamination process. Fungal processes necessary for invasion of the plant and production of aflatoxin can be broken down into three categories: 1) cell wall degradation (cellulases, pectinases, amylases and proteinases), 2) fungal development (cell wall synthesis and conidiophore and conidial formation), and 3) aflatoxin biosynthesis and regulation. Fungal Expressed Sequence Tag (EST), microarray, and whole genome sequencing projects have led to a rapid expansion in the number of candidate genes governing the processes involved in invasion of the plant and aflatoxin contamination. Plant factors have been discovered through the use of proteomics and natural product chemistry that may influence fungal processes involved in invasion and aflatoxin contamination. These factors can also be divided into three categories: 1) seed proteins/inhibitors of fungal cell wall degrading enzymes, 2) seed/kernel natural products which may influence fungal growth and/or aflatoxin synthesis, and 3) plant stress responsive proteins. If the interaction between the plant and the fungus can be better understood through use of proteomics, genomics and natural product chemistry, particularly in how plant factors may influence fungal processes contributing to virulence and aflatoxin contamination, this information could accelerate development of breeding through marker selection and/or gene insertion technologies for enhancing host plant resistance.

Last Modified: 7/28/2014
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