The intensive use of agrochemicals has played an important role in increasing agricultural production. One of the impacts of agrochemical use has been changes in population structure of soil microbiota. The aim of this work was to analyze the adaptive strategies that bacteria use to overcome oxidative stress caused by mesotrione, which inhibits 4-hydroxyphenylpyruvate dioxygenase. We also exami...

Multiple-herbicide-resistant (MHR) Canada fleabane [Conyza canadensis (L.) Cronq.] control has become a major concern for corn producers in Ontario. Postemergence (POST) herbicides are critical the of emerged MHR corn. A study that consisted five field experiments was conducted southwestern Ontario fields with confirmed to evaluate various herbicide mixtures applied POST Glyphosate + 2,4-D amin...

Mesotrione is one of the new herbicides that have emerged as an alternative after the ban of atrazine in the European Union. To our knowledge, any work using genetic or biochemical biomarkers was performed in any kind of fish evaluating the toxicity of this compound. The impact of acute (96 h) exposure to environmentally relevant mesotrione concentrations (1.8, 7, 30, 115 e 460 μg L-1) were eva...

In this study, a bacterial strain able to use sulcotrione, a β-triketone herbicide, as sole source of carbon and energy was isolated from soil samples previously treated with this herbicide. Phylogenetic study based on16S rRNA gene sequence showed that the isolate has 100 % of similarity with several Bradyrhizobium and was accordingly designated as Bradyrhizobium sp. SR1. Plasmid profiling reve...

Enhanced knowledge of pesticide transformation products formed in the environment could lead to both accurate estimates of the overall effects of these compounds on environmental ecosystems and human health and improved removal processes. These compounds can present completely different chemical and environmental behaviour from the starting active ingredient and have a more important impact. Th...

Mesotrione is among the most recently marketed herbicides belonging to triketone family and applied on maize crops. A Bacillus megaterium Mes11 strain isolated from an agricultural soil was able completely transform 1 mM of mesotrione, alone or in a mixture with nicosulfuron and/or S-metolachlor herbicides, 5 h. Its complete genome contains one circular chromosome (5,191,612 bp) nine plasmids (...

BACKGROUND A population of Amaranthus tuberculatus (var. rudis) was confirmed resistant to 4-hydroxyphenylpyruvate dioxygenase (HPPD)-inhibitor herbicides (mesotrione, tembotrione, and topramezone) in a seed corn/soybean rotation in Nebraska. Further investigation confirmed a non-target-site resistance mechanism in this population. The main objective of this study was to explore the role of cyt...

Weed management systems used by sweet corn growers, including the role of atrazine, are poorly characterized. Management records of 175 fields throughout the major sweet corn production areas of the Midwest were surveyed from 2005 to 2007. Seventy-four percent of sweet corn fields in the Midwest were grown in rotation with soybean or corn. Interrow cultivation was used on 48% of fields, and atr...

BACKGROUND Combining herbicides into a mixture is common approach used to overcome the potential for herbicide resistance in weeds. Many mixtures can be antagonistic and they are rarely synergistic. Here, 24 commercial herbicides, each representing different mode of action were create matrix all 276 unique combinations search new synergies agar using Arabidopsis thaliana. RESULTS Herbicides at ...

volta metric behavior of mesotrione using silver/amalgam electrode we examined in this paper.mesotrione belongs to the triketone group of herbicides. it is used against weeds in corn and operates byinhibition of 4-hydroxyphenyl piruvate in plants. there is little information about mesotrione as its presencein the market is short. for its wider application in the future, it is important to know ...