نتایج جستجو برای: insect resistance

تعداد نتایج: 411399  

2017
Hao-Xun Chang Glen L. Hartman

Management of insects that cause economic damage to yields of soybean mainly rely on insecticide applications. Sources of resistance in soybean plant introductions (PIs) to different insect pests have been reported, and some of these sources, like for the soybean aphid (SBA), have been used to develop resistant soybean cultivars. With the availability of SoySNP50K and the statistical power of g...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1999
D G Heckel L J Gahan Y B Liu B E Tabashnik

Transgenic plants producing environmentally benign Bacillus thuringiensis (Bt) toxins are deployed increasingly for insect control, but their efficacy will be short-lived if pests adapt quickly. The diamondback moth (Plutella xylostella), a worldwide pest of vegetables, is the first insect to evolve resistance to Bt toxins in open-field populations. A recessive autosomal gene confers resistance...

2007
H. C. Sharma M. K. Dhillon G. Pampapathy

Sorghum is one of the most important cereal crops in the semi-arid tropics. Several insect pests damage it. The possibility of identifying genotypes with multiple resistance to these pests and transferring the relevant genes into high-yielding varieties and hybrids has been considered as an attractive approach to reducing yield losses. A set of 12 cytoplasmic male-sterile and maintainer lines, ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1991
R H Ffrench-Constant D P Mortlock C D Shaffer R J MacIntyre R T Roush

Cyclodiene resistance represents 60% of the reported cases of insecticide resistance and is also present in vertebrates. Resistance is due to insensitivity of the cyclodiene/picrotoxinin binding site on the gamma-aminobutyric acid subtype A (GABAA) receptor-chloride ionophore complex. Following isolation of cyclodiene-resistant Drosophila mutants, we report the cloning of the locus conferring r...

ژورنال: پژوهش در پزشکی 2003
ناهید خلدی, , اکبر شیخانی, ,

Malaria is one of the most important protozoal infections that afflicts almost 100,000 people with 1% mortality rate in over 100 countries. Unfortunately, effective vaccines have not been developed and most of preventive modalities have focused on carriers, as well as prompt diagnosis and treatment. In Iran, the carrier insect in these provinces has shown resistance to routine pesticides. A. fl...

Journal: :Colloids and Surfaces A: Physicochemical and Engineering Aspects 2023

To conserve wool textiles from insect attack, they are frequently treated with emulsions of natural and synthetic pyrethroid in an aqueous medium. Although the treatment is highly effective, it produces toxic effluent. In this work, insect-resist fabrics were produced by treating them a diterpene (totarol), (permethrin) subcritical carbon dioxide (subc-CO2) The totarol failed to provide any act...

Journal: :Molecular & cellular proteomics : MCP 2003
Mehmet Candas Olga Loseva Brenda Oppert Pradeepa Kosaraju Lee A Bulla

Insect resistance to the Cry toxins of Bacillus thuringiensis (Bt) has been examined previously using a number of traditional biochemical and molecular techniques. In this study, we utilized a proteomic approach involving two-dimensional differential gel electrophoresis, mass spectrometry, and function-based activity profiling to examine changes in the gut proteins from the larvae of an Indianm...

2014
Felipe Redorat Fernando Fonseca Leonardo Macedo Isabela Lourenço Maria Fátima Grossi-de-Sá

Background The sugarcane giant borer, Telchin licus licus, is the major insect pest of crops in northern and northeastern regions of Brazil. This insect has a long life cycle, which lasts about 160-190 days and presenting four major life stages, egg, larvae, pupae and moth [1]. During larval stage, the insect penetrates the plant as soon as they hatch and starts feeding of the stalk, where it s...

2017
Yunting Lei Qing Liu Christian Hettenhausen Guoyan Cao Qing Tan Weiye Zhao Honghui Lin Jianqiang Wu

In nature, plants are often exposed to multiple stress factors at the same time. Yet, little is known about how plants modulate their physiology to counteract simultaneous abiotic and biotic stresses, such as soil salinity and insect herbivory. In this study, insect performance bioassays, phytohormone measurements, quantification of transcripts, and protein determination were employed to study ...

Journal: :Insect biochemistry and molecular biology 2002
Olga Loseva Mohamed Ibrahim Mehmet Candas C Noah Koller Leah S Bauer Lee A Bulla

Widespread commercial use of Bacillus thuringiensis Cry toxins to control pest insects has increased the likelihood for development of insect resistance to this entomopathogen. In this study, we investigated protease activity profiles and toxin-binding capacities in the midgut of a strain of Colorado potato beetle (CPB) that has developed resistance to the Cry3Aa toxin of B. thuringiensis subsp...

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