Susceptibility to insecticides and activities of glutathione <i>S</i>‐transferase and esterase in populations of <i>Lygus lineolaris</i> (Hemiptera: Miridae) in Mississippi

Fleming, Daniel Ε.; Krishnan, Natraj; Catchot, Angus L.; Musser, Fred R.

doi:10.1002/ps.4193

Cited by 22 publications

(44 citation statements)

References 38 publications

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“…Conversely, in Apis cerana cerana, a more obvious response can be observed, with an increase in the expression of carboxylesterase after UV radiation (Ma et al, 2018). Carboxylesterases seem to be particularly sensitive to pollutants or radiation in insects, molluscs and rodents with responses that are very specific because they are not associated to a modulation of tissue protein content (Auda et al, 1987;Badiou-Bénéteau et al, 2012a;Carvalho et al, 2013a;Fleming et al, 2016;Franco et al, 2016). Such a sensitivity to environmental stressors is not surprising because these enzymes are involved in numerous metabolic processes, hormone metabolism, reproduction and development, neural development or cell signaling (Hosokawa et al, 2007;Jackson et al, 2013;Khalil et al, 2006;Li et al, 2016;Vose et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

Physiological effects of gamma irradiation in the honeybee, Apis mellifera

Gagnaire

Bonnet²,

Tchamitchian³

et al. 2019

Ecotoxicology and Environmental Safety

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Terrestrial ecosystems are exposed to various kinds of pollutants, including radionuclides. The honeybee, Apis mellifera, is commonly used in ecotoxicology as a model species for evaluating the effects of pollutants. In the present study, honeybees were irradiated right after birth for 14 days with gamma rays at dose rates ranging between 4.38x10-3 and 588 mGy/d. Biological tissues (head, intestine and abdomen) were sampled at D3, D10 and D14. Ten different physiological markers involved in nervous (acetylcholinesterase (AChE)), antioxidative (catalase (CAT), superoxide dismutase (SOD), glutathione peroxidase (GPx) and glutathione-S-transferase (GST)), immune system (phenoloxidase (PO)) and metabolism (carboxylesterases (CaEs) and alkaline phosphatase (ALP)) were measured. Univariate analyses were conducted to determine whether each individual biomarker response was positively or negatively correlated with the dose rate. Then, multivariate analyses were applied to investigate the relationships between all the biomarker responses. Although no mortality occurred during the experiment, several biomarkers varied significantly in relation to the dose rate. Globally, the biomarkers of antioxidant and immune systems decreased as the dose rate increased. Reversible effects on the indicator of the neural system were found. Concerning indicators of metabolism (carboxylesterases), variations occurred but no clear pattern was found. Taken altogether, these results help better understand the effects of ionizing radiation on bees by identifying relevant physiological markers of effects. These results could improve the assessment of the environmental risk due to ionizing radiation in terrestrial ecosystems.

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Section: Discussionmentioning

confidence: 99%

Physiological effects of gamma irradiation in the honeybee, Apis mellifera

Gagnaire

Bonnet²,

Tchamitchian³

et al. 2019

Ecotoxicology and Environmental Safety

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“…Increased use of insecticide sprays for the targeted control of tarnished plant bug ( Lygus lineolaris (Palisot de Beauvois)) in the Midsouth has been widely discussed and highlighted by numerous authors over the last two decades [ 1 , 2 ]. The current number of sprays made for tarnished plant bug is increasing and is somewhat reminiscent of scheduled “calendar day” approaches to pest management from the 1950s and 1960s that led to adverse effects of over-reliance on chemical control, resulting environmental problems, outbreaks of secondary pests, and a pesticide treadmill that evolved around cycles of new insecticide chemistry [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

“…Researchers at the USDA ARS’ Southern Insect Management Research Unit have produced a wealth of information on tarnished plant bug response to insecticides in laboratory assays [ 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 ], and examinations of resistance mechanisms associated with the variable response of tarnished plant bugs to insecticides [ 23 , 24 , 25 , 26 , 27 , 28 ]. Research at both the University of Arkansas [ 29 ] and Mississippi State University [ 1 ] has also addressed similar research topics. Notable published research on the field control of tarnished plant bugs with foliar applied insecticides include Scott et al [ 30 ] and Reed, Jackson, and Harris [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

Longitudinal Measurements of Tarnished Plant Bug (Hemiptera: Miridae) Susceptibility to Insecticides in Arkansas, Louisiana, and Mississippi: Associations with Insecticide Use and Insect Control Recommendations

Parys

Luttrell

Snodgrass

et al. 2017

Insects

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Concentration-response assays were conducted from 2008 through 2015 to measure the susceptibility of field populations of Lygus lineolaris (Palisot de Beauvois) from the Delta regions of Arkansas, Louisiana, and Mississippi to acephate, imidacloprid, thiamethoxam, permethrin, and sulfoxaflor. A total of 229 field populations were examined for susceptibility to acephate, 145 for susceptibility to imidacloprid, and 208 for susceptibility to thiamethoxam. Permethrin assays were conducted in 2014 and 2015 to measure levels of pyrethroid resistance in 44 field populations, and sulfoxaflor assays were conducted against 24 field populations in 2015. Resistance to acephate and permethrin is as high or higher than that previously reported, although some populations, especially those exposed to permethrin, appear to be susceptible. Variable assay responses were measured for populations exposed to imidacloprid and thiamethoxam. Average response metrics suggest that populations are generally susceptible to the neonicotinoids, but a few populations from cotton fields experiencing control problems exhibited elevated LC50s. Efforts to associate variability in LC50s with recorded use of insecticides and estimated cotton insect losses and control costs suggest that intensive use of insecticides over several decades may have elevated general detoxifying enzymes in L. lineolaris and some field populations may be exhibiting resistance to multiple classes of insecticide. These results suggest that efforts should be made to manage these pests more efficiently with a reduced use of insecticides and alternative controls.

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“…Both species are characterized by multiple generations per season with each generation consisting of five nymphal instars. In recent years, L. lineolaris has become the dominant pest species of cotton in the mid‐south and has transitioned from historically being an early‐season pest of cotton to a mid‐ to late‐season pest that requires increasing numbers of insecticide applications (Fleming et al ., ). L. hesperus is likewise a key pest of cotton in addition to strawberries and forage alfalfa (Schwartz & Foottit, ; Strand, ).…”

Section: Introductionmentioning

confidence: 97%

Molecular cloning and comparative analysis of transcripts encoding chemosensory proteins from two plant bugs, Lygus lineolaris and Lygus hesperus

2019

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Chemosensory proteins (CSPs) are soluble carrier proteins typically characterized by a six-helix bundle structure joined by two disulfide bridges and a conserved Cys spacing pattern (C1-X 6-8 -C2-X 16-21 -C3-X 2 -C4). CSPs are functionally diverse with reported roles in chemosensation, immunity, development, and resistance. To expand our molecular understanding of CSP function in plant bugs, we used recently developed transcriptomic resources for Lygus lineolaris and Lygus hesperus to identify 17 and 14 CSP-like sequences, respectively. The Lygus CSPs are orthologous and share significant sequence identity with previously annotated CSPs. Three of the CSPs are predicted to deviate from the typical CSP structure with either five or seven helical segments rather than six. The seven helix CSP is further differentiated by an atypical C3-X 3 -C4 Cys spacing motif. Reverse transcriptase PCR-based profiling of CSP transcript abundance in adult L. lineolaris tissues revealed broad expression for most of the CSPs with antenna specific expression limited to a subset of the CSPs. Comparative sequence analyses and homology modeling suggest that variations in the amino acids that comprise the Lygus CSP binding pockets affect the size and nature of the ligands accommodated.

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Susceptibility to insecticides and activities of glutathione S‐transferase and esterase in populations of Lygus lineolaris (Hemiptera: Miridae) in Mississippi

Cited by 22 publications

References 38 publications

Physiological effects of gamma irradiation in the honeybee, Apis mellifera

Physiological effects of gamma irradiation in the honeybee, Apis mellifera

Longitudinal Measurements of Tarnished Plant Bug (Hemiptera: Miridae) Susceptibility to Insecticides in Arkansas, Louisiana, and Mississippi: Associations with Insecticide Use and Insect Control Recommendations

Molecular cloning and comparative analysis of transcripts encoding chemosensory proteins from two plant bugs, Lygus lineolaris and Lygus hesperus

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