User profiles for Thomas W. Sappington

Thomas W. Sappington

USDA-ARS, Corn Insects & Crop Genetics, and Iowa State University
Verified email at ars.usda.gov
Cited by 7213

Molecular characteristics of insect vitellogenins and vitellogenin receptors

TW Sappington, AS Raikhel - Insect biochemistry and molecular biology, 1998 - Elsevier
The recent cloning and sequencing of several insect vitellogenins (Vg), the major yolk protein
precursor of most oviparous animals, and the mosquito Vg receptor (VgR) has brought the …

Adaptation and invasiveness of western corn rootworm: intensifying research on a worsening pest

ME Gray, TW Sappington, NJ Miller… - Annual review of …, 2009 - annualreviews.org
The western corn rootworm, Diabrotica virgifera virgifera LeConte, is an established insect
pest of maize (Zea mays L.) in North America. The rotation of maize with another crop, …

Western corn rootworm (Diabrotica virgifera virgifera LeConte) population dynamics

LJ Meinke, TW Sappington, DW Onstad… - Agricultural and …, 2009 - Wiley Online Library
The western corn rootworm Diabrotica virgifera virgifera LeConte is a major insect pest of field
maize, Zea mays L. Larvae can cause substantial injury by feeding on maize roots. Larval …

Increased survival of western corn rootworm on transgenic corn within three generations of on-plant greenhouse selection

…, NJ Miller, TW Sappington… - Proceedings of the …, 2008 - National Acad Sciences
To delay evolution of insect resistance to transgenic crops producing Bacillus thuringiensis (Bt)
toxins, nearby “refuges” of host plants not producing Bt toxins are required in many …

Extensive sequence conservation among insect, nematode, and vertebrate vitellogenins reveals ancient common ancestry

JS Chen, TW Sappington, AS Raikhel - Journal of Molecular Evolution, 1997 - Springer
The eggs of most oviparous animals are provisioned with a class of protein called vitellogenin
(Vg) which is stored as the major component of yolk. Until recently, deduced amino acid …

Regulation of Migration in Mythimna separata (Walker) in China: A Review Integrating Environmental, Physiological, Hormonal, Genetic, and Molecular Factors

…, L Luo, L Zhang, TW Sappington… - Environmental …, 2011 - academic.oup.com
Each year the Mythimna separate (Walker), undertakes a seasonal, long-distance, multigeneration
roundtrip migration between southern and northern China. Despite its regularity, the …

Comparative performance of single nucleotide polymorphism and microsatellite markers for population genetic analysis

…, NJ Miller, KS Kim, TW Sappington… - Journal of …, 2009 - academic.oup.com
Microsatellite loci are standard genetic markers for population genetic analysis, whereas
single nucleotide polymorphisms (SNPs) are more recent tools that require assessment of …

Haplotype Profile Comparisons Between Spodoptera frugiperda (Lepidoptera: Noctuidae) Populations From Mexico With Those From Puerto Rico, South America …

…, JK Westbrook, TW Sappington… - Journal of economic …, 2015 - academic.oup.com
Fall armyworm [Spodoptera frugiperda (JE Smith)] is a major economic pest throughout the
Western Hemisphere of maize, cotton, sorghum, and a variety of agricultural grasses and …

Molecular characterization of the mosquito vitellogenin receptor reveals unexpected high homology to the Drosophila yolk protein receptor.

TW Sappington, VA Kokoza… - Proceedings of the …, 1996 - National Acad Sciences
The mosquito (Aedes aegypti) vitellogenin receptor (AaVgR) is a large membrane-bound
protein (214 kDa when linearized) that mediates internalization of vitellogenin, the major yolk-…

Early Detection and Mitigation of Resistance to Bt Maize by Western Corn Rootworm (Coleoptera: Chrysomelidae)

…, AJ Gassmann, TW Sappington… - Journal of economic …, 2016 - academic.oup.com
Transgenic Bt maize that produces less than a high-dose has been widely adopted and
presents considerable insect resistance management (IRM) challenges. Western corn rootworm, …