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Susceptibility to insecticides and activities of glutathione S-transferase and esterase in populations of Lygus lineolaris (Hemiptera: Miridae) in Mississippi.
Pest Manag Sci. 2016 Aug; 72(8):1595-603.PM

Abstract

BACKGROUND

Lygus lineolaris (Palisot de Beauvois) is a serious pest of cotton (Gossypium hirsutum L.) in Mississippi, particularly in the Delta region. This may be due to decreased insecticide susceptibility in that region. Research has revealed populations of L. lineolaris in the Delta region with high levels of insecticide resistance; however, comparisons with populations in the remainder of the state are limited.

RESULTS

Experiments were undertaken to compare the LC50 values and activities of detoxification enzymes of L. lineolaris populations. The results of these studies indicated that the LC50 values were not different between the Delta and Hills regions, but differences were significant between populations within and across regions. Results of the detoxifying enzyme activity assays revealed significantly higher esterase activity in the Delta region when compared with the Hills. Glutathione S-transferase activity was not different between regions, but differences within and across regions were significant.

CONCLUSION

The results indicated that glass-vial assays to determine and compare LC50 values may be less accurate than enzymatic assays for detecting insecticide susceptibility differences. Higher esterase activity is likely a contributing factor to the difficulties with managing L. lineolaris in the Mississippi Delta region. © 2015 Society of Chemical Industry.

Authors+Show Affiliations

Department of Biochemistry, Molecular Biology, Entomology and Plant Pathology, Mississippi State University, MS, USA.Department of Biochemistry, Molecular Biology, Entomology and Plant Pathology, Mississippi State University, MS, USA.Department of Biochemistry, Molecular Biology, Entomology and Plant Pathology, Mississippi State University, MS, USA.Department of Biochemistry, Molecular Biology, Entomology and Plant Pathology, Mississippi State University, MS, USA.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

26598042

Citation

Fleming, Daniel E., et al. "Susceptibility to Insecticides and Activities of Glutathione S-transferase and Esterase in Populations of Lygus Lineolaris (Hemiptera: Miridae) in Mississippi." Pest Management Science, vol. 72, no. 8, 2016, pp. 1595-603.
Fleming DE, Krishnan N, Catchot AL, et al. Susceptibility to insecticides and activities of glutathione S-transferase and esterase in populations of Lygus lineolaris (Hemiptera: Miridae) in Mississippi. Pest Manag Sci. 2016;72(8):1595-603.
Fleming, D. E., Krishnan, N., Catchot, A. L., & Musser, F. R. (2016). Susceptibility to insecticides and activities of glutathione S-transferase and esterase in populations of Lygus lineolaris (Hemiptera: Miridae) in Mississippi. Pest Management Science, 72(8), 1595-603. https://doi.org/10.1002/ps.4193
Fleming DE, et al. Susceptibility to Insecticides and Activities of Glutathione S-transferase and Esterase in Populations of Lygus Lineolaris (Hemiptera: Miridae) in Mississippi. Pest Manag Sci. 2016;72(8):1595-603. PubMed PMID: 26598042.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Susceptibility to insecticides and activities of glutathione S-transferase and esterase in populations of Lygus lineolaris (Hemiptera: Miridae) in Mississippi. AU - Fleming,Daniel E, AU - Krishnan,Natraj, AU - Catchot,Angus L, AU - Musser,Fred R, Y1 - 2015/12/29/ PY - 2015/09/11/received PY - 2015/10/30/revised PY - 2015/11/24/accepted PY - 2015/11/25/entrez PY - 2015/11/26/pubmed PY - 2017/6/14/medline KW - Lygus lineolaris KW - cotton KW - esterase KW - glutathione S-transferase KW - insecticide resistance SP - 1595 EP - 603 JF - Pest management science JO - Pest Manag Sci VL - 72 IS - 8 N2 - BACKGROUND: Lygus lineolaris (Palisot de Beauvois) is a serious pest of cotton (Gossypium hirsutum L.) in Mississippi, particularly in the Delta region. This may be due to decreased insecticide susceptibility in that region. Research has revealed populations of L. lineolaris in the Delta region with high levels of insecticide resistance; however, comparisons with populations in the remainder of the state are limited. RESULTS: Experiments were undertaken to compare the LC50 values and activities of detoxification enzymes of L. lineolaris populations. The results of these studies indicated that the LC50 values were not different between the Delta and Hills regions, but differences were significant between populations within and across regions. Results of the detoxifying enzyme activity assays revealed significantly higher esterase activity in the Delta region when compared with the Hills. Glutathione S-transferase activity was not different between regions, but differences within and across regions were significant. CONCLUSION: The results indicated that glass-vial assays to determine and compare LC50 values may be less accurate than enzymatic assays for detecting insecticide susceptibility differences. Higher esterase activity is likely a contributing factor to the difficulties with managing L. lineolaris in the Mississippi Delta region. © 2015 Society of Chemical Industry. SN - 1526-4998 UR - https://www.unboundmedicine.com/medline/citation/26598042/Susceptibility_to_insecticides_and_activities_of_glutathione_S_transferase_and_esterase_in_populations_of_Lygus_lineolaris__Hemiptera:_Miridae__in_Mississippi_ DB - PRIME DP - Unbound Medicine ER -