Substitutions in Spodoptera exigua topoisomerase I modulate its relaxation activity and camptothecin sensitivity.
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DOI: 10.1002/ps.4440
Abstract: BACKGROUND Topoisomerase I (Top I) is referred as the cellular target of the camptothecins (CPTs) which are now being explored as potential pesticides for insect control. Three amino acid substitutions, including L530P, A653T and S729T,… read more here.
Keywords: relaxation; sensitivity; topoisomerase; spodoptera exigua ... See more keywords
Population genetics unveils large-scale migration dynamics and population turn-over of Spodoptera exigua.
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DOI: 10.1002/ps.6670
Abstract: BACKGROUND Migration is a widespread phenomenon among many insect species, including herbivorous crop pests. At present, scant information exists on the long-range migration of the polyphagous armyworm, Spodoptera exigua and its underlying climatic determinants (i.e.,… read more here.
Keywords: migration dynamics; genetics; spodoptera exigua; population genetics ... See more keywords
Compatibility of mycorrhiza‐induced resistance with viral and bacterial entomopathogens in the control of Spodoptera exigua in tomato
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DOI: 10.1002/ps.7058
Abstract: Abstract BACKGROUND Arbuscular mycorrhizal fungi (AMF) are soil‐borne microorganisms that establish mutualistic associations with roots of most terrestrial plants. This symbiosis results in nutritional and defensive benefits to the host plant, usually conferring protection against… read more here.
Keywords: exigua; spodoptera exigua; control; tomato ... See more keywords
Insight into the regulation of the Nrf2 pathway in response to ascovirus infection in Spodoptera exigua.
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DOI: 10.1002/ps.7284
Abstract: BACKGROUND Ascoviruses are a kind of entomopathogenic microorganisms with high biological pest control potential, which is expected to contribute in natural control of lepidopteran pests. However, knowledge of the molecular mechanism underlying the biocidal activity… read more here.
Keywords: spodoptera exigua; ascovirus; ascovirus infection; nrf2 pathway ... See more keywords
Coupling Transcriptomics and Behaviour to Unveil the Olfactory System of Spodoptera exigua Larvae.
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DOI: 10.1007/s10886-020-01224-z
Abstract: Insect chemosensation is crucial for many aspects related to food seeking, enemy avoidance, and reproduction. Different families of receptors and binding proteins interact with chemical stimuli, including odorant receptors (ORs), ionotropic receptors (IRs), gustatory receptors… read more here.
Keywords: exigua larvae; spodoptera exigua; chemosensory related;
The insecticidal potential of Piper ribesioides (Piperales: Piperaceae) extracts and isolated allelochemicals and their impact on the detoxification enzymes of Spodoptera exigua (Lepidoptera: Noctuidae)
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DOI: 10.1007/s12600-021-00891-2
Abstract: The dried twigs of Piper ribesioides were used to prepare various extracts in different solvents. Each extract was evaluated for their toxicity against 2nd instar larvae of Spodoptera exigua. The highest acute toxicity was observed… read more here.
Keywords: cinnamic acid; detoxification enzymes; spodoptera exigua; ld50 larva ... See more keywords
Midgut de novo transcriptome analysis and gene expression profiling of Spodoptera exigua larvae exposed with sublethal concentrations of Cry1Ca protein
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DOI: 10.1007/s13205-020-2129-2
Abstract: Spodoptera exigua (Hübner) is a polyphagous pest on agricultural crops, whose control is based mainly on the application of chemical insecticides. Bacillus thuringiensis (Bt) is one of the most important biological agents that have been… read more here.
Keywords: cry1ca protein; exigua; concentrations cry1ca; spodoptera exigua ... See more keywords
Insecticidal activities and biochemical properties of Pinellia ternata extracts against the beet armyworm Spodoptera exigua
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DOI: 10.1016/j.aspen.2017.03.003
Abstract: Abstract The beet armyworm, Spodoptera exigua Hubner (Lepidoptera: Noctuidae), is a key pest of various agricultural crops in many countries throughout the world. The pest requires extensive use of pesticides and field-evolved resistances to conventional… read more here.
Keywords: exigua; pinellia ternata; armyworm spodoptera; spodoptera exigua ... See more keywords
Hemolin, an immunoglobulin-like peptide, opsonizes nonself targets for phagocytosis and encapsulation in Spodoptera exigua, a lepidopteran insect
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DOI: 10.1016/j.aspen.2019.08.002
Abstract: Abstract Hemolin is an immunoglobulin-like peptide that plays crucial role in microbial pathogen surveillance. However, its specific molecular actions in immune responses remain largely unclear. This study focused on the modulation of hemocyte phagocytosis of… read more here.
Keywords: immunoglobulin like; like peptide; hemolin immunoglobulin; spodoptera exigua ... See more keywords
Use of biocides to minimize microbial contamination in Spodoptera exigua multiple nucleopolyhedrovirus preparations
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DOI: 10.1016/j.biocontrol.2020.104408
Abstract: Abstract The presence of contaminant microbes in baculovirus-based insecticides is regulated by phytosanitary product registration authorities. We aimed to determine whether the abundance of microbes in suspensions of Spodoptera exigua multiple nucleopolyhedrovirus occlusion bodies (OBs)… read more here.
Keywords: benzalkonium chloride; exigua multiple; spodoptera exigua; colloidal silver ... See more keywords
Role of Bacillus thuringiensis Cry1A toxins domains in the binding to the ABCC2 receptor from Spodoptera exigua.
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DOI: 10.1016/j.ibmb.2018.07.006
Abstract: Cry proteins from Bacillus thuringiensis (Bt) have been used to control insect pests either as formulated sprays or as in Bt-crops. However, field-evolved resistance to Bt proteins is threatening the long-term use of Bt products.… read more here.
Keywords: cry1a; bacillus thuringiensis; domain; spodoptera exigua ... See more keywords