Abstract
Imidacloprid (IMI) is a commonly used pesticide against aphids and accumulates in plant parts, maximum in leaves. Present study was conducted to check the efficiency of seed pre-soaking with 24-epibrassinolide (24-EBL) for reduction of this pesticide in the leaves of Brassica juncea L. plants raised from 24-EBL pre-soaked seeds and grown in soils supplemented with IMI. Leaves were analyzed for IMI residues using gas chromatography-mass spectrometry (GC-MS). Activities of guaiacol peroxidase (POD), glutathione reductase (GR), and glutathione S-transferase (GST), and glutathione (GSH) content were determined by spectrophotometry. Soil containing 350 mg IMI/kilogram soil resulted in 88.66 μg/g fresh weight (FW) of IMI residue in the leaves, which was maximum decrease to 35.31 μg/g FW (60.17 %), when seeds were pre-soaked in 100 nM 24-EBL. In this treatment (350 mg IMI/kilogram soil + 100 nM 24-EBL), GSH content, GR, POD, and GST activities were increased by 42.30, 34.5, 20.5, and 13.4 %, respectively, as compared to plants grown in soils amended with 350 mg IMI/kilogram soil.
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Abbreviations
- 24-EBL:
-
24-Epibrassinolide
- ANN:
-
Artificial neural network
- AOAC:
-
Association of Official Agricultural Chemists
- BRs:
-
Brassinosteroids
- CBZ:
-
Carbendazim
- cDNB:
-
Chloro-dinitrobenzene
- CHT:
-
Chlorothalonil
- CMT:
-
Cypermethrin
- CPF:
-
Chlorpyrifos
- DTNB:
-
Dithionitrobenzoic acid
- EDTA:
-
Ethylenediaminetetraacetic acid
- FW:
-
Fresh weight
- GC-MS:
-
Gas chromatography-mass spectrometry
- GR:
-
Glutathione reductase
- GSH:
-
Glutathione
- GST:
-
Glutathione S-transferase
- IMI:
-
Imidacloprid
- LC-MS:
-
Liquid chromatography-mass spectrometry
- MLR:
-
Multiple linear regression
- MRP:
-
Multidrug resistance-associated protein
- NADPH:
-
Nicotinamide adenine dinucleotide phosphate
- POD:
-
Guaiacol peroxidase
- PSA:
-
Primary secondary amine
- QuEChERS:
-
Quick, easy, cheap, effective, rugged, and safe
- RBOH1:
-
Respiratory burst oxidase homologue 1
- ROS:
-
Reactive oxygen species
- UGT:
-
UDP-glycosyltransferase
- UN:
-
United Nations
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Acknowledgments
The Department of Science and Technology (DST), Government of India is duly acknowledged for providing INSPIRE fellowship to A. Sharma for carrying out the research work. The instrumentation facilities under the UGC-UPE program are acknowledged.
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Sharma, A., Bhardwaj, R., Kumar, V. et al. GC-MS studies reveal stimulated pesticide detoxification by brassinolide application in Brassica juncea L. plants. Environ Sci Pollut Res 23, 14518–14525 (2016). https://doi.org/10.1007/s11356-016-6650-0
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DOI: https://doi.org/10.1007/s11356-016-6650-0