Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 6/17/2011
Publication Date: 6/19/2011
Citation: Busman, M. 2011. Field tests of the role of fumonisins in the Zea mays–Gibberella moniliformis interaction. Meeting Abstract. Interpretive Summary:
Technical Abstract: Zea mays often is colonized with the fungus Gibberella moniliformis, which produces fumonisin toxins. The role of fumonisins in ear colonization was studied by field inoculations of a fumonisin B1 (FB1)-insensitive maize backcross line. The FB1-insensitive maize backcross line was not more resistant than the FB1-sensitive parent to ear rot, indicating that an increase in FB1-insensitivity was not associated with an increase in disease resistance. The FB1-insensitive maize backcross line and the FB1-sensitive parent line did not differ in ability to allow ear rot, and the both lines allowed similar levels of toxin production by the fungal challenge tests. Together, these and previous results indicate that the role of fumonisins depends on complex environmental and genetic contexts in this host–pathogen interaction.