A5013762387- Insect Resistance and Genetics
- Entomopathogenic Microorganisms in Pest Control
- Insect-Plant Interactions and Control
- Insect and Pesticide Research
- CRISPR and Genetic Engineering
- Research in Cotton Cultivation
- Helminth infection and control
- Evolution and Genetic Dynamics
- Genetic diversity and population structure
- Parasite Biology and Host Interactions
- Plant and fungal interactions
- Genomics and Phylogenetic Studies
- Plant and animal studies
- Viral Infectious Diseases and Gene Expression in Insects
- Insect and Arachnid Ecology and Behavior
- Plant Pathogens and Fungal Diseases
- Insect Pest Control Strategies
Texas A&M University
2017-2025
Abstract Background The fall armyworm ( Spodoptera frugiperda (J.E. Smith)) is a highly polyphagous agricultural pest with long-distance migratory behavior threatening food security worldwide. This has host range of > 80 plant species, but two strains are recognized based on their association corn (C-strain) or rice and smaller grasses (R-strain). population genomics the United States (USA) remains poorly characterized to date despite its threat. Results In this study, structure genetic...
Abstract Background Molecular genetic approaches have become vital to understanding the evolutionary processes that act on insect pest populations. From mapping development of resistance monitoring and predicting movement, genomic tools can inform enhance management programs. Here, we used whole genome sequencing population genomics unravel novel patterns structure, linkage, selection across a notorious agricultural pest, fall armyworm. Results Our data strongly support existence two...
Abstract Pesticide resistance represents a major challenge to global food production. The spread of alleles is the primary explanation for observations reduced pesticide efficacy over time, but potential gene-by-environment interactions (plasticity) mediate susceptibility has largely been overlooked. Here we show that nutrition an environmental factor affects Bt toxins. Protein and carbohydrates are two key macronutrients insect herbivores, polyphagous pest Helicoverpa zea self-selects...
Introduction Biophysical approaches validated against haplotype and trap catch patterns have modeled the migratory trajectory of fall armyworms at a semi-continental scale, from their natal origins in Texas or Florida through much United States east Rocky Mountains. However, unexplained variation validation analysis was present, misalignments between simulated movement armyworm populations ratios several locations, especially northeastern US Canada, been reported. Methods Using an expanded...
Abstract All plants including cotton host a wide range of microorganisms as endophytes. There is growing appreciation the prevalence, ecological significance and management potential facultative fungal endophytes in protecting from pests, pathogens environmental stressors. Hemipteran sucking bugs have emerged major pests across U.S. belt, reducing yields directly by feeding on developing reproductive structures indirectly vectoring plant pathogens. We used no‐choice simultaneous choice...
Abstract Speciation is the process through which reproductive isolation develops between distinct populations. Because this takes time, speciation studies often necessarily examine populations within a species that are at various stages of divergence. The fall armyworm, Spodoptera frugiperda (J.E. Smith), comprised two strains (R = Rice & C Corn) serve as novel system to explore population divergence in sympatry. Here, we use ddRADSeq data show armyworm field largely genetically...
Abstract The nesting ecology of wild bumble bees is not well resolved, but information learned from discovered nests can be great conservation value. Data collected at on foraging patterns, caste‐specific behaviour and health (e.g., pathogens) are invaluable for understanding bee ecology, difficult to decipher solely observations away the nest. Post‐senescence nest excavation allows estimation colony size, caste numbers, documents pest incidence provides opportunities examine material...
The global reliance on Bacillus thuringiensis (Bt) proteins for controlling lepidopteran pests in cotton, corn, and soybean crops underscores the critical need to understand resistance mechanisms. Vip3Aa, one of most widely deployed currently effective Bt genetically modified crops, plays a pivotal role pest management. This study investigates molecular basis Vip3Aa Australian Helicoverpa armigera through genetic crosses, integrated genomic transcriptomic analyses. We identified previously...
Abstract The boll weevil, Anthonomus grandis Boheman (Coleoptera: Curculionidae), is an important pest of commercial cotton across the Americas. In United States, eradication this species complicated by re‐infestations areas where has been previously successful and existence morphologically similar variants that can confound identification efforts. To date, no study applied a high‐throughput sequencing approach to better understand population genetic structure weevil. Furthermore, only...
The fall armyworm, Spodoptera frugiperda, is a polyphagous global pest with preference for gramineous crops such as corn, sorghum and pasture grasses. This species comprised of two morphologically identical but genetically distinct host strains known the corn rice strains, which can complicate management approaches. Two molecular markers are commonly used to differentiate between however, discordance these lead inconclusive strain identification. Here, we double digest restriction site...
Abstract The global reliance on Bacillus thuringiensis (Bt) proteins for controlling lepidopteran pests in cotton, corn, and soybean crops underscores the critical need to understand resistance mechanisms. Vip3Aa, one of most widely deployed currently effective Bt genetically modified crops, plays a pivotal role pest management. This study identifies molecular basis Vip3Aa Australian Helicoverpa armigera through genetic crosses, integrated genomic transcriptomic analyses. We identified...
The fall armyworm,
Fall armyworm (FAW) is a global agricultural pest, causing substantial economic losses in corn and many other crops. Complicating efforts to control this pest its capacity for long distance flights, which has been described greatest detail the central eastern sections of United States. FAW infestations are also routinely found areas southern Arizona, lie beyond western limits mapped migratory pathways. Climate suitability analysis that affected Arizona locations cannot support permanent...
Abstract Spodoptera frugiperda is a major agricultural pest that has invaded China since January 2019. Given most of the individuals present in carried diagnostic rice-strain mtDNA (COI-RS), there was no efficient method to distinguish populations S. frugiperda. In this study, we identified and characterized two variant microsatellite alleles mitochondrial NAD6 gene retrieved from National Center for Biotechnology GenBank. We then sequenced partial genes containing region COI barcoding (used...
Abstract BACKGROUND The widespread adoption of genetically modified crops, including Bacillius thuringensis (Bt) crops that target chewing insects, has transformed agricultural pest management. This increased use Bt raised concerns about the onset resistance amongst pests. Recent studies have shown for some caterpillars, nutritional foraging (e.g. ratio proteins and carbohydrates consumed) can affect insect susceptibility to toxin Cry1Ac. However, on both tend rely laboratory colonies...
Despite the success of United States (US) Boll Weevil Eradication Program, boll weevil, Anthonomus grandis Boheman (Coleoptera: Curculionidae), remains a threat to cotton production in southern US and is arguably most important pest Central South America.Management this species complicated by existence morphologically similar variants re-infestations areas where eradication had been successful.To date, no study has applied high-throughput sequencing approach better understand population...
Abstract The fall armyworm ( Spodoptera frugiperda (J.E. Smith)) is a highly polyphagous agricultural pest with long-distance migratory behavior threatening food security worldwide. This has host range of >80 plant species, but two strains are recognized based on their association corn (C-strain) or rice and smaller grasses (R-strain). In this study, the population structure genetic diversity in 55 S. samples from Argentina, Brazil, Kenya, Puerto Rico United States (USA) were surveyed to...