Life Sciences Commons^™

Cloning, Expression, Sequence Analysis And Homology Modeling Of The Prolyl Endoprotease From Eurygaster Integriceps Puton, Ravi Chandra Yandamuri, Ranjeeta Gautam, Charles Darkoh, Vanitha Dareddy, Mustapha El-Bouhssini, Beatrice A. Clack

Faculty Publications

Eurygaster integriceps Puton, commonly known as sunn pest, is a major pest of wheat in Northern Africa, the Middle East and Eastern Europe. This insect injects a prolyl endoprotease into the wheat, destroying the gluten. The purpose of this study was to clone the full length cDNA of the sunn pest prolyl endoprotease (spPEP) for expression in E. coli and to compare the amino acid sequence of the enzyme to other known PEPs in both phylogeny and potential tertiary structure. Sequence analysis shows that the 5ꞌ UTR contains several putative transcription factor binding sites for transcription factors known to be …

Characteristics Of Bark Beetle Infestations In East Texas During A Period Of Low Southern Pine Beetle Activity, David L. Kulhavy

Faculty Publications

The species composition nf southern pine bark beetle infestations was examined in east Texas in 1979, A total of 545 infestations were located in thirteen 18,000 acresurvey blocks. Ips spp, were observed in 98.9 of ihe infestations, with black turpentine beetles, Dendrnclonus lerebrans Olivier, present in 42.4 % ofthe infestations. Southern pine beetles, D. fronlulis Zimmemiann. were only observed in 11 infestations (2.0%), and were less abundant than other bark beetle species in these infestations. Almost 80% of the infestations were associated with a recognizable pre-disposing factor (lightning, fire, etc.). Most Infestations were small (less than six trees), though infestations …

Effects Of Fertilizer And Herbicide Application On Nantucket Pine Tip Moth Infestation (Lep., Tortricidae), David L. Kulhavy

Faculty Publications

A study of fertilizer and herbicide e}ects on Nantucket pine tip moth (NPTM), Rhyacionia frustrana (Comstock) infestations was conducted in loblolly pine (Pinus taeda L) plantations in Nacogdoches Co. Texas from 0877 to 0878. Both fertilizer and herbicide applications had effects on NPTM infestation level, pupal weight and host tree oleoresin production. Nitrogen fertilization increased infestation levels, whereas, phosphorus applications tends to decrease infestation rate. Herbicide treatment had a negative effect on NPTM infestations possibly because of decreased moisture stress and increased tree vigour. This is in contrast to general observations of increased NPTM infestations associated with reducing competing …

Susceptibility Of Red-Cockaded Woodpecker Colony Areas To Southern Pine Beetle Infestation In East Texas, James H. Mitchell, David L. Kulhavy

Faculty Publications

Seven red-cockaded woodpecker (Picoides borealis) colonies and stands within a one-quarter mile radius were hazard-rated for susceptibility to the southern pine beetle (Dendroctonus Frontalis Zimm.). Individual colonies generally were ranked low to moderate hazard using the Texas Hazard system and moderate hazard using the National Forest Risk system. Within one quarter mile of the colonies, 28% of the stands were low hazard, 25% moderate, 0.3% high and 7.5% extreme with Texas Hazard. Four percent were low hazard, 52% moderate, and 6% high with National Forest Risk. Moderate to extreme hazard stands within one-quarter mile of the …

Potential For Biological Control Of Dendroctonus And Ips Bark Beetles, David Kulhavy, Mitchel C. Miller

Faculty Publications

"The evolution of olfactory communication in bade beetles brought with it the parallel or coevolution of kairomonal systems in the natural enemy complexes. Entomophagous insects developed olfactory receptors and behavioral patterns responsive to insect and host-produced volatiles in the ecosystems of bark beetles. The phenomenon has both positive and negative implications for efforts to employ natural enemies in pest management."

Stand Risk Rating For The Southern Pine Beetle: Integrating Pest Management With Forest Management, Gordon L. Autry

Faculty Publications

Stand risk rating for the southern pine beetle.

Dendroctonus frontalis Zimm., is a first step toward dealing with a serious but sporadic insect problem. Two approaches, one utilizing readily available resource data, the other employing data obtained from aerial photographs, illustrate application of current knowledge to meet the protection needs of resource management-the primary role of integrated pest management. During a 36-month period in Louisiana, high-risk stands accounted for 13.4 infestations per 1,000 acres, four times the rate of low-risk stands; in Texas high-risk stands accounted for 9 .9 infestations per 1 ,000 acres during 1973-1978, almost five times the …

Systemic Insecticides Effective Against Poplar Tentmaker In Cottonwood Plantations, Jack E. Coster

Faculty Publications

No abstract provided.