บทคัดย่องานวิจัย

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Advances in the development of host resistance in corn to aflatoxin contamination by Aspergillus flavus

BROWN, R.L., CHEN, Z.Y., CLEVELAND, T.E. and RUSSIN, J.S.

Phytopathology 89: 113-117.

1991

บทคัดย่อ

Advances in the development of host resistance in corn to aflatoxin contamination by Aspergillus flavus.

The pre-eminent strategy for elimination of aflatoxin in maize is to development preharvest host resistance to development preharvest host resistance to aflatoxin accumulation. This strategy has gained even greater prominence due to recent discoveries of natural resistance in corn that can be exploited in plant breeding strategies. The ability to identify resistent corn genotypes has been enhanced by the development of a laboratory kernal screening assay and by a strain of Aspergillus flavus genetically engineered to produce beta-glucuronidase, an enzyme whose activity can be monitored to assess the degree of fungal infection in kernels. Investigations of resistant maize genotypes have associated kernel pericarp wax characteritics with resistance, identified kernel proteins associated with resistance to and inhibition of fungal growth or aflatoxin biosynthesis, and identified chromosome regions associated with resistance to Aspergillus ear rot and aflatoxin production.