Development of a Quick Knockdown Test for Diagnosing Resistance to Phosphine in Sitophilus oryzae (Coleoptera: Curculionidae), a Major Pest of Stor…
Authors of this article are:
Nayak MK, Kaur R, Jagadeesan R, Pavic H, Phillips TW, Daglish GJ.
A summary of the article is shown below:
A key component in the management of resistance to fumigant phosphine in stored products pests is their early detection and implementation of control strategies. Currently, resistance testing involves exposing adults to a specific discriminating concentration over a fixed time period (20-48 h). Although it is widely adopted, this test takes significant time for assay preparation (up to 4 wk) as well as diagnosis (1-2 wk). To address these lacunae, we have established a ‘quick knockdown test’ using a key grain insect pest, rice weevil, Sitophilus oryzae (L.). Susceptible, weakly and strongly phosphine-resistant reference strains were exposed to a threshold concentration of phosphine over short exposure periods (min to h). The time to knockdown (KT) responses to phosphine were characterized at 2 (1,440 ppm) and 5 mg/liter (3,600 ppm). The time to 99.9% KT (KT99.9) at 2 mg/liter was 12.52 min for the susceptible adults, compared with 167.9 and 1,510 min in the case of weakly and strongly resistant phenotypes, respectively. As anticipated, increasing the concentration of phosphine to 5 mg/liter halved the KT99.9 (81.57 min) to separate weakly and strongly resistant populations than it was required at 2 mg/liter. We validated the KT99.9 value for the 5 mg/liter against field-derived populations of S. oryzae. The results were aligned with the existing Food and Agriculture Organization approach, confirming that the proposed ‘quick test’ is a reliable tool to rapidly diagnose resistance in this species.© The Author(s) 2019. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.
Check out the article’s website on Pubmed for more information:
This article is a good source of information and a good way to become familiar with topics such as: discriminating dose;fumigation bioassay;rapid assay;strong resistance.
New Chemicals from MOLECULAR DEPOT
-
- Sale!
- Chemicals, Interference, Lipids
Triglyceride Mix for Interference Testing
- Original price was: $495.00.$295.00Current price is: $295.00.
- Add to cart
-
- Sale!
- Chemicals
Microparticle Stabilizer Solution
- Original price was: $595.00.$295.00Current price is: $295.00.
- Add to cart
-
- Sale!
- Buffers & Solutions, Chemicals
Enzyme Acceptor Stabilization Buffer
- Original price was: $495.00.$250.00Current price is: $250.00.
- Add to cart
-
- Sale!
- Buffers & Solutions, Chemicals
Enzyme Donor Stabilization Buffer
- Original price was: $495.00.$250.00Current price is: $250.00.
- Add to cart
-
- Sale!
- Chemicals, Conjugates
Progesterone Biotin Conjugate Solution
- Original price was: $650.00.$350.00Current price is: $350.00.
- Add to cart
-
- Sale!
- Buffers & Solutions, Chemicals
Microparticle Activation Buffer
- Original price was: $595.00.$295.00Current price is: $295.00.
- Add to cart
-
- Sale!
- Buffers & Solutions, Chemicals
Microparticle Washing Buffer
- Original price was: $595.00.$295.00Current price is: $295.00.
- Add to cart
-
- Sale!
- Buffers & Solutions, Chemicals
Microparticle Blocking Buffer
- Original price was: $650.00.$350.00Current price is: $350.00.
- Add to cart
-
- Sale!
- Buffers & Solutions, Chemicals
Microparticle Anti Aggregation Agent
- Original price was: $595.00.$295.00Current price is: $295.00.
- Add to cart
-
- Sale!
- Chemicals
CPRG (Chlorophenol red-β-D-galactopyranoside)
- Original price was: $850.00.$395.00Current price is: $395.00.
- Add to cart
New Proteins from MOLECULAR DEPOT
-
- Sale!
- Proteins, Conjugates
Tacrolimus BSA Conjugate Solution
- Original price was: $695.00.$495.00Current price is: $495.00.
- Add to cart
-
- Sale!
- Enzymes, Proteins
Cholesterol Oxidase from Streptomyces sp.
- Original price was: $595.00.$295.00Current price is: $295.00.
- Add to cart
-
- Sale!
- Proteins
Aprotinin from Bovine Lung (Lyophilized powder)
- Original price was: $450.00.$250.00Current price is: $250.00.
- Add to cart
-
- Sale!
- Proteins, Enzymes
Beta-galactosidase Enzyme Donor
- Original price was: $795.00.$450.00Current price is: $450.00.
- Add to cart
-
- Sale!
- Proteins, Enzymes
Beta-galactosidase Enzyme Acceptor
- Original price was: $795.00.$375.00Current price is: $375.00.
- Add to cart
-
- Sale!
- Enzymes, Proteins
Xanthine Oxidase Grade II (Lyophilized Powder)
- Original price was: $695.00.$395.00Current price is: $395.00.
- Add to cart
-
- Sale!
- Proteins, Enzymes
Ascorbate Oxidase (Lyophilized Powder)
- Original price was: $350.00.$250.00Current price is: $250.00.
- Add to cart
-
- Sale!
- Proteins
Silk Fibroin (Bombyx Mori Silkworm)
- Original price was: $595.00.$295.00Current price is: $295.00.
- Add to cart
-
- Sale!
- Proteins
Fibrinogen from Bovine Plasma Lyophilized
- Original price was: $595.00.$295.00Current price is: $295.00.
- Add to cart
-
- Sale!
- Proteins, Enzymes
Horseradish Peroxidase Biotinylated
- Original price was: $595.00.$295.00Current price is: $295.00.
- Add to cart
New Antibodies from MOLECULAR DEPOT
-
- Sale!
- Antibodies
Antibody to Thyroxine T4 Monoclonal
- Original price was: $995.00.$495.00Current price is: $495.00.
- Add to cart
-
- Antibodies
SAA Antibody Monoclonal Anti-Serum Amyloid A
- $350.00 – $1,550.00
- Select options
-
- Antibodies
Valproic Acid Antibody (Mouse Monoclonal)
- $250.00 – $1,095.00
- Select options
-
- Antibodies
Phenytoin Antibody (Mouse Monoclonal)
- $350.00 – $1,450.00
- Select options
-
- Sale!
- Antibodies
Anti Sheep IgG (H+L) Rabbit Polyclonal
- $250.00 – $1,495.00
- Select options
-
- Sale!
- Antibodies
Anti Human IgM Antibody Polyclonal
- Original price was: $595.00.$295.00Current price is: $295.00.
- Add to cart
-
- Sale!
- Antibodies
Myoglobin Antibody (Human Affinity Purified)
- Original price was: $650.00.$350.00Current price is: $350.00.
- Add to cart
-
- Sale!
- Antibodies, Interference
Rheumatoid Factor Interference Blocker
- Original price was: $595.00.$395.00Current price is: $395.00.
- Add to cart
-
- Sale!
- Antibodies, Interference
HAMA Blocking Reagent (Affinity Purified)
- Original price was: $895.00.$450.00Current price is: $450.00.
- Add to cart
New Research Kits from MOLECULAR DEPOT
-
- Sale!
- Interference, Research Kits
Interference Test Kit
- Original price was: $595.00.$395.00Current price is: $395.00.
- Add to cart
-
- Sale!
- Research Kits
Alpha Complementation Kit Beta-galactosidase
- Original price was: $1,395.00.$695.00Current price is: $695.00.
- Add to cart
-
- Sale!
- Research Kits
Crystallization Screen for Protein-DNA Complexes
- Original price was: $1,295.00.$650.00Current price is: $650.00.
- Add to cart
-
- Sale!
- Molecular Biology, Research Kits
NativeFolder Bacterial Culture Medium
- $350.00 – $19,500.00
- Select options
-
- Sale!
- Research Kits
CycloScreen: Cyclodextrins Kit for Screening
- Original price was: $595.00.$295.00Current price is: $295.00.
- Add to cart
-
- Sale!
- Research Kits
NativePro Bradford Protein Assay Kit (Automated)
- Original price was: $995.00.$495.00Current price is: $495.00.
- Add to cart
-
- Sale!
- Interference, Research Kits
Rheumatoid Factor Interference Kit
- Original price was: $1,495.00.$695.00Current price is: $695.00.
- Add to cart
-
- Sale!
- Interference, Research Kits
Interference Test Kit EXTRA
- Original price was: $795.00.$495.00Current price is: $495.00.
- Add to cart
-
- Sale!
- Interference, Research Kits
HAMA Interference Kit
- Original price was: $895.00.$595.00Current price is: $595.00.
- Add to cart
-
- Sale!
- Buffers & Solutions, ELISA, Research Kits
ELISA Microplate Production Kit
- Original price was: $795.00.$495.00Current price is: $495.00.
- Add to cart