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Cultivar-Dependent Expression Of A Maize Lipoxygenase Responsive To Seed Infesting Fungi, Richard A. Wilson, Harold W. Gardner, Nancy P. Keller
Cultivar-Dependent Expression Of A Maize Lipoxygenase Responsive To Seed Infesting Fungi, Richard A. Wilson, Harold W. Gardner, Nancy P. Keller
Fungal Molecular Plant-Microbe Interactions
Maize kernels are highly susceptible to Aspergillus spp. infection and aflatoxin (AF) contamination. Fatty acid signaling molecules appear to mediate the plant–fungal interaction by affecting the growth, development, and AF production of the fungus. In particular, fatty acid derivatives of the plant lipoxygenase (LOX) pathway are implicated in the Aspergillus spp.-seed interaction. The 9(S)-hydroperoxide derivative of linoleic acid promotes transcription of AF genes, whereas the 13(S)-hydroperoxide derivative decreases AF gene expression and production; both are sporulation factors. Our goal was to identify LOX genes responsive to Aspergillus spp. colonization and determine their specificities, 9(S)- …