Dale M. Norris

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Contrary to constitutive resistance, inducible resistance to Mexican bean beetle (MBB) (Epilachna varivestis) herbivory in PI 227687 soybean leaves was positively correlated with total phenolic content and temporally unique, increasedl-phenylalanine ammonia-lyase (PAL) andl-tyrosine ammonia-lyase (TAL) activities. Initial expression of the induced(More)
Visual laser ablation of the prostate was performed on 108 patients (ages 44 to 84 years) as an outpatient procedure from May 1992 to October 1992. Preoperatively, the patients underwent digital rectal examinations, determination of prostate specific antigen levels and transrectal ultrasound guided biopsies when necessary to rule out the presence of(More)
Abilities of isolate AF-W1 of Fusarium solani to degrade the side chain and the ring structure of synthetic dehydrogenative polymerizates, aromatic acids, or lignin in sound wood were investigated under several conditions of growth substrate or basal medium and pH. Significant transformations of lignins occurred in 50 days in both unextracted and extracted(More)
Electroantennograms were recorded from an herbivore,Pseudoplusia includens (Walker) (Lepidoptera: Noctuidae), and a parasitoid,Microplitis demolitor (Wilkinson) (Hymenoptera: Braconidae), exposed to 5-through 12-carbon aliphatic compounds of several chemical classes. The response of the herbivore was higher for the 6- and/or 7-carbon hydrocarbons, alcohols,(More)
The hypocotyl of different soybean genotypes was tested for its inducible phytoalexin (i.e. glyceollin or coumestrol) accumulation and its inducible soybean looper resistance in response to chemical elicitation. A very highly insect-resistant soybean genotype (PI 227687) produced significantly more phytoalexins than a relatively insect-susceptible one(More)
The antioxidant vitamin E, α-tocopherol, was tested as a candidate elicitor of alterable antiherbivory in soybean plants against cabbage looper larvae. Although a nonspecific antioxidant, vitamin E proved elicitory to the involved sulfhydryl-dependent receptor-energy transducer protein in soybean plasma membrane. Effects of α-tocopherol were dependent on(More)
The compound eye of female (diploid) Xyleborus ferrugineus beetles was examined with scanning and transmission electron microscopy. The eye is emarginate, and externally consists of roughly 70–100 facets. Each ommatidium is composed of a thickly biconvex lenslet with about 50 electron dense and rare layers. The lens facet overlies a crystalline cone of the(More)
Treatment of Davis soybeans (Glycine max (L.) Merrill) with a proven stress elicitor, iodoacetic acid, which binds specifically with sulfhydryl groups, induced a defensive phytochemistry, which included increased concentrations of aromatic compounds. High-performance liquid chromatography resolved groups of peaks, including one that contains the major(More)