Studies on pirimicarb resistance mechanisms in Iranian populations of the peach-potato aphid, Myzus persicae

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概要

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• Mechanisms of resistance to pirimicarb were surveyed in Iranian populations of the peach-potato aphid, Myzus persicae. Insecticide bioassays were carried out using topical application on three different populations collected from Karaj and Rasht in the Northern provinces. Results of the bioassays indicated that Rasht and Karaj-S populations were susceptible to pirimicarb. A population collected from the college greenhouse (Karaj-R) was resistant to pirimicarb. LD_<50> (>100ng/insect) of pirimicarb was not calculated for the Karaj-R population due to limited solubility of this insecticide. The activity and PAGE patterns of esterase in resistant (Karaj-R) and susceptible populations showed that one mechanism of resistance to pirimicarb was esterase-based resistance. Esterase activity of the Karaj-R population was 3.25-fold higher than the susceptible population (Karaj-S), and one of the two esterase bands with higher activity in the Karaj-R population showed strong susceptibility to pirimicarb. The acetylcholinesterase (AChE) of the Karaj-R population had lower affinity to artificial substrates, acetylthiocholine, propionylthiocholine and butyrylthiocholine, than Rasht and Karaj-S populations. The I_<50> of pirimicarb for Karaj-R, Karaj-S and Rasht populations was 1.89×10^<-5>M, 1.37×l0^<-8>M and 1.37×10^<-8>M, respectively. These results suggest that AChE of the Karaj-R population is in-sensitive to pirimicarb. Ratios of AChE insensitivity of the Karaj-R population to the Karaj-S population were 1,384.6, 11.8 and 2.7 for pirimicarb, monocrotophos and aldicarb, respectively; however, the ratios were 0.32, 0.15 and 0.10 for carbofuran, propoxure and MTMC, respectively, showing negatively correlated sensitivity to pirimicarb-insensitive AChE.

• 日本応用動物昆虫学会の論文
• 2008-02-25

著者

• Kono Y

  Mitsubishi Heavy Industries Ltd. Kobe Shipyard & Machinery Works

• Kono Y

  Graduate School Of Life And Environmental Sciences University Of Tsukuba

• Kono Yoshiaki

  Graduate School Of Life And Environmental Sciences University Of Tsukuba

• MIZUNO Hiroshi

  Graduate School of Life and Environmental Sciences, University of Tsukuba

• OH Suenghyup

  Graduate School of Life and Environmental Sciences, University of Tsukuba

• MOHAMMAD Ghadamyari

  Department of Plant Protection, College of Agriculture, Guilan University

• TALEBI Kh.

  Department of Plant Protection, Faculty of Agriculture, University of Teheran

• Talebi Kh.

  Department Of Plant Protection Faculty Of Agriculture University Of Teheran

• Oh Suenghyup

  Graduate School Of Life And Environmental Sciences University Of Tsukuba

• Mizuno Hiroshi

  Graduate School Of Life And Environmental Sciences University Of Tsukuba

• Mohammad Ghadamyari

  Department Of Plant Protection College Of Agriculture Guilan University

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