Publications

transgenic pigeonpea events expressing cry1ac and cry2aa exhibit resistance to helicoverpa armigera.	independent transgenic pigeonpea events were developed using two cry genes. transgenic cry2aa-pigeonpea was established for the first time. selected transgenic events demonstrated 100% mortality of helicoverpa armigera in successive generations. lepidopteran insect helicoverpa armigera is the major yield constraint of food legume pigeonpea. the present study was aimed to develop h. armigera-resistant transgenic pigeonpea, selected on the basis of transgene expression and phenotyping. agrobacteri ...	2017	28352969
[characterization and cloning of the cry2a gene from indigenous isolates of bacillus thuringiensis].	discovery of novel cry genes of bacillus thuringiensis (bt) with higher toxicity is important for the development of transgenic bt crops resistant to target pests. two new indigenous isolates of bt were characterized for their colony type, crystal inclusion and toxicity with helicoverpa armigera hubner and spodoptera litura linn. screening of cry2a genes from the two new isolates of bt, t30 and t48, by pcr with cry2a family primers showed the presence of cry2a genes only in the isolate t30. furt ...	2017	26299858
next-generation transgenic cotton: pyramiding rnai and bt counters insect resistance.	transgenic crops producing insecticidal proteins from the bacterium bacillus thuringiensis (bt) are extensively cultivated worldwide. to counter rapidly increasing pest resistance to crops that produce single bt toxins, transgenic plant 'pyramids' producing two or more bt toxins that kill the same pest have been widely adopted. however, cross-resistance and antagonism between bt toxins limit the sustainability of this approach. here we describe development and testing of the first pyramids of co ...	2017	28199783
comparative host selection responses of specialist (helicoverpa assulta) and generalist (helicoverpa armigera) moths in complex plant environments.	we tested the behavioral responses of ovipositing females and natal larvae of two sibling species, a generalist helicoverpa armigera (hübner) and a specialist helicoverpa assulta (guenée), to odor sources emitted from different combinations of six plant species (tobacco, nicotiana tabacum; hot pepper, capsicum annuum; tomato, solanum esculentum; cotton, gossypium hirsutum; peanut, arachis hypogaea; maize, zea mays). under the conditions of plant materials versus corresponding controls, both stag ...	2017	28182679
mass rearing and augmentative biological control evaluation of rhynocoris fuscipes (hemiptera: reduviidae) against multiple pests of cotton.	rhynocoris fuscipes (fab.) (hemiptera: reduviidae) is a generalist predator of cotton pests and is commonly found inhabiting cotton-growing regions in southern india. with the goal of integrating this predator in standard management practices used against cotton pests on a commercial scale, (1) we developed a protocol for adult group rearing of this predator inside micro-environmental cages (mecs), and (2) we evaluated the biocontrol potential of mass-produced predators against cotton pests unde ...	2017	28127861
chemical profile and defensive function of the latex of euphorbia peplus.	plant latex is an endogenous fluid secreted from highly specialized laticifer cells and has been suggested to act as a plant defense system. the chemical profile of the latex of euphorbia peplus was investigated. a total of 13 terpenoids including two previously unknown diterpenoids, (2s,3s,4r,5r,6r,8r,l1r,13s,14s,15r, 16r)-5,8,15-triacetoxy-3-benzoyloxy-11,16-dihydroxy-9-oxopepluane and (2r,3r, 4s,5r,7s,8s,9s,l3s,14s,15r*)-2,5,8,9,14-pentaacetoxy-3-benzoyloxy-15-hydroxy-7-is ...	2017	28062071
various bioactivity and relationship of structure-activity of matrine analogues.	for the first time, the botanic source natural product matrine was reported to have more potent inhibitory activity against tobacco mosaic virus (tmv) than the commercial virucide ribavirin. on the basis of the structural diversity modification strategy, a series of matrine derivatives was synthesized and systematically evaluated for their antiviral activity against tmv, fungicidal activity, and insecticidal activity. as a result, compounds 3 (inhibitory rate 67.3%, 69.5%, 63.7%, 63.0% at 500 μg ...	2017	28248103
mitochondrial dna and trade data support multiple origins of helicoverpa armigera (lepidoptera, noctuidae) in brazil.	the old world bollworm helicoverpa armigera is now established in brazil but efforts to identify incursion origin(s) and pathway(s) have met with limited success due to the patchiness of available data. using international agricultural/horticultural commodity trade data and mitochondrial dna (mtdna) cytochrome oxidase i (coi) and cytochrome b (cyt b) gene markers, we inferred the origins and incursion pathways into brazil. we detected 20 mtdna haplotypes from six brazilian states, eight of which ...	2017	28350004