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The ecology of Bactrocera tryoni (Diptera: Tephritidae): what do we know to assist pest management?
It is concluded that there are major gaps in the knowledge required to implement most noninsecticide-based management approaches, and priority areas for future research include host–plant interactions, protein and cue-lure foraging and use, spatial dynamics, development of new monitoring tools and better integration of fruit flies into general horticultural IPM systems.
Expression of snowdrop lectin (GNA) in transgenic rice plants confers resistance to rice brown planthopper.
- K. V. Rao, K. Rathore, J. Gatehouse
- Biology, MedicineThe Plant journal : for cell and molecular…
- 1 August 1998
Insect bioassays and feeding studies showed that GNA expressed in the transgenic rice plants decreased survival and overall fecundity of the insects, retarded insect development, and had a deterrent effect on BPH feeding.
Immunohistochemical and developmental studies to elucidate the mechanism of action of the snowdrop lectin on the rice brown planthopper, Nilaparvata lugens (Stal).
Expression of snowdrop lectin in transgenic tobacco plants results in added protection against aphids
A transgenic tobacco line which expresses high levels of GNA has been shown to have enhanced resistance to M. persicae in leaf disc and whole plant bioassays, demonstrating the potential for extending transgenic plant technology to the control of sap-sucking insect pests.
Antimetabolic effects of plant lectins and plant and fungal enzymes on the nymphal stages of two important rice pests, Nilaparvata lugens and Nephotettix cinciteps
Insect feeding trials were carried out to determine the effects of incorporating a range of plant derived proteins into artificial diets fed to leafhopper and planthopper pests of rice, and a number of inert proteins, lectins, protein inhibitors and enzymes showed relatively little or no effect towards both insects.
Use of the rice sucrose synthase-1 promoter to direct phloem-specific expression of β-glucuronidase and snowdrop lectin genes in transgenic tobacco plants
The promoter region from the rice sucrose synthase-1 gene (RSs1) was fused with coding sequences for β-glucuronidase (GUS) and snowdrop (Galanthus nivalis) lectin (GNA). Tobacco plants were…
Antifeedant effects of plant lectins and an enzyme on the adult stage of the rice brown planthopper, Nilaparvata lugens
Of the proteins tested GNA was the most effective antifeedant, reducing honeydew droplet production by 96%, although after 24 h there was some recovery in the Honeydew excretion levels and thus the insects appeared to tolerate the presence of the antifeingant with time, and the lectin Pisum sativum agglutinin (PSA), previously demonstrated to be non‐toxic, showed no antifeeds.
Yield decline of sweet potato in the humid lowlands of Papua New Guinea
Antimetabolic effects of plant lectins towards nymphal stages of the planthoppers Tarophagous proserpina and Nilaparvata lugens
- K. Powell
- 1 April 2001
Psophocarpus tetragonolobus agglutinin (PTA) showed significant antimetabolic effects towards third instar nymphs of rice brown planthopper (Nilaparvata lugens Stål).
Approaches to insect resistance using transgenic plants
Data from bioassays of insects using artificial diets, and with transgenic plants, suggest that the in vitro assay of relative inhibitor effectiveness is consistent with the effects of different inhibitors on insect development and survival in vivo.