In order to determine whether ClpXP-mediated proteolysis is a common mechanism used to regulate the chemotaxis machinery during the cell cycle of Caulobacter crescentus, we have characterized a soluble cytoplasmic chemoreceptor, McpB. The mcpB gene lies adjacent to the major chemotaxis operon, which encodes 12 chemotaxis proteins, including the membrane chemoreceptor McpA. Like McpA, McpB posse...

The degradation behaviour of 2,4-D and MCPA in four types of soil were determined from measurements of 14CO2 evolution over a period of 100 days. The total C-organic volatile compounds evaporated from the soils during the experimental period and the residual C in the soils at the end of the incubation period was also determined. The degree of mineralization was different for tested pesticides, ...

The work describes a study of the oxidation power of N-doped and undoped anatase TiO(2), as well as TiO(2) Degussa P25 suspensions for photocatalytic degradation of the herbicides RS-2-(4-chloro-o-tolyloxy)propionic acid (mecoprop) and 3,6-dichloro-pyridine-2-carboxylic acid (clopyralid) using visible and UV light. Undoped nanostructured TiO(2) powder in the form of anatase was prepared by a so...

4-chloro-2-methylphenoxy acetic acid (mcpa) is one of the most important pesticides which is extensively used to control weeds in arable farmland. exposure to this compound occurs in general population and persons who occupationally handle it. the aim of this present work was the preparation of mcpa imprinting polymer and its application as a selective sample preparation technique for trace det...

Abstract The intercalation of 2-methyl-4-chlorophenoxyacetic acid (MCPA) herbicide into the interlayer matrix calcium–aluminium layered double hydroxide (CaAl LDH) host has been successfully done via co-precipitation method to form CaAl-MCPA nanocomposite, proposing an eco-friendly alternative with adjusted delivery system for application. process is supported by powder X-ray diffraction analys...

Understanding the effects of climate change on weed growth and herbicide activity is important for optimizing applications effective control in future. Therefore, this study examined how affects Amaranthus patulus efficacy soil foliar herbicides at different temperatures. Although values A. differed between temperature, increased with increasing time after treatments. Under conditions which tem...

The production of activated carbons (ACs) from dirty plastic wastes derived the mechanical/biological treatment urban solid wastes, disposable plastics and used in agriculture is reported. use these precursors innovative contributes to circular economy by valorization that are usually disposed landfills. ACs were produced physical activation, with air or CO2, chemical KOH K2CO3. presented a BET...

Chlorophenoxy compounds, particularly 2,4-dichlorophenoxyacetic acid (2,4-D) and 4-chloro-2-methylphenoxy)acetic acid (MCPA), are amongst the most widely used herbicides in the United States for both agricultural and residential applications. Epidemiologic studies suggest that exposure to 2,4-D and MCPA may be associated with increased risk non-Hodgkins lymphoma (NHL), Hodgkin's disease (HD), l...

sulfonylurea herbicides mixtures with phenoxy herbicides can lead to effective control of broadleaved weeds. pot experiments were conducted to study the effect of foramsulfuron and nicosulfuron mixtures with 2,4-d plus mcpa on redroot pigweed and common lambsquarters in 2010 at the greenhouse of agricultural faculty of ferdowsi university of mashhad, iran. experiments were performed as a comple...