ESA Annual Meetings Online Program

Role of ethylene in the defense response of buffalograss to chinch bug feeding

Monday, November 12, 2012: 8:15 AM
Cumberland (Holiday Inn Knoxville Downtown)
Crystal M. Ramm , Entomology, University of Nebraska, Lincoln, NE
Lisa Baird , Biology, University of San Diego, San Diego, CA
Tiffany M. Heng-Moss , Department of Entomology, University of Nebraska, Lincoln, NE
Fred Baxendale , Department of Entomology, University of Nebraska, Lincoln, NE
Paul Twigg , Biology, University of Nebraska, Kearney, Kearney, NE
Keenan L. Amundsen , Department of Agronomy and Horticulture, University of Nebraska, Lincoln, NE
Previous research has documented differential expression of oxidative enzymes, such as peroxidase, in the defense response of buffalograss to chinch bug feeding. Peroxidase activity and gene expression is promoted by ethylene in certain plant systems. The focus of this research was to document changes in specific peroxidases in response to chinch bug feeding and determine the effects of blocking the ethylene receptors on peroxidase transcriptonal abundance.  Preliminary results indicate that there are differences in the transcriptional abundance levels for the peroxidases evaluated between resistant and susceptible genotypes, control and plants treated with 1-methylcycloprene (ethylene receptor blocker), and in response to chinch bug feeding.
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