Results 41 to 50 of about 14,487 (214)
Background Organophosphorus pesticides (OP’s) are heavily constituted in agriculture, gardens, home and veterinary and although it is useful, there are concerns about the environment, safety and health of human and animals. In this study, we investigated
Edina da Luz Abreu +9 more
doaj +1 more source
Malathion resistance in Spanish field populations of Ceratitis capitata is associated with a point mutation (R allele) and a heterogeneous duplication (RS haplotype) of the Ccace2 gene. The R allele imposes a higher fitness cost than the RS haplotype under laboratory and field conditions. An evolutionary model supports the stability of the RS haplotype
Rabeh Arouri +6 more
wiley +1 more source
Carbofuran, Malathion and 2,4-D Degradation by Bacterial Activity
The indiscriminate use of pesticides in agricultural practice in recent years has generated various environmental problems, since these compounds tend to bioaccumulate through trophic chains presenting considerable levels of toxicity and conditioning ...
Primo Sanchez-Morales +5 more
core +1 more source
Abstract A nonaqueous copper colorimetric procedure has been developed for the assay of technical and formulated products of malathion. The stability of the copper O,O-dimethyl phosphorodithioate complex has been substantially improved by the use of nonpolar solvents and by lowering the hydrogen ion activity of the system.
R S, Wayne +3 more
openaire +2 more sources
Identifying resistance‐conferring cytochrome P450s requires integrating weed characterization, gene discovery and functional validation. No single approach is sufficient to distinguish causal resistance genes from herbicide‐metabolizing enzymes. Abstract Cytochrome P450 monooxygenases (P450s) play a pivotal role in metabolic herbicide resistance, yet ...
Satoshi Iwakami, Takuya Yamaguchi
wiley +1 more source
Avaliação dos efeitos tóxicos induzidos por malation e malaoxon e a possível proteção por oximas [PDF]
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Biológicas, Programa de Pós-Graduação em Bioquímica, Florianópolis, 2013O malation é um composto tóxico pertencente à classe dos pesticidas organofosforados (OF) que tem como ...
Santos, Alessandra Antunes dos
core
The toxicity of organophosphorus insecticides is considered a major global health problem, and the target of the toxic action of these compounds in humans and pests is the same.
Ahmed Massoud +8 more
doaj +1 more source
ABSTRACT This study assessed the ecotoxicological effects of treated sewage on the freshwater planarian Girardia tigrina, integrating biochemical, energetic, and behavioral biomarkers. Planarians were exposed for 48 h to different concentrations of treated sewage (12.5%, 25%, 50%, and 100%) and compared to controls using commercial water and water from
Renata M. P. Freitas +3 more
wiley +1 more source
A 5000-fold increase in the specificity of a bacterial phosphotriesterase for malathion through combinatorial active site mutagenesis. [PDF]
Phosphotriesterases (PTEs) have been isolated from a range of bacterial species, including Agrobcaterium radiobacter (PTEAr), and are efficient enzymes with broad substrate ranges.
Tatheer Naqvi +6 more
doaj +1 more source
Impact of Environmental Microparticles on Insect Olfaction
ABSTRACT Terrestrial insects underpin key ecosystem services, including pollination, herbivory regulation, decomposition, nutrient cycling, and disease control. These functions depend on chemical communication that guides insects to food, mates, hosts, shelters, and oviposition sites while helping them avoid threats.
Steve B. S. Baleba +9 more
wiley +1 more source

