Allaoueddine Boudemagh

• Professor
• Professor at Université des frères Mentouri- Constantine1 Algérie. Faculté des sciences de la nature et de la vie

Citation: Rebai, H.; Sholkamy, E.N.; Abdelhamid, M.A.A.; Prakasam Thanka, P.; Aly Hassan, A.; Pack, S.P.; Ki, M.-R.; Boudemagh, A. Soil Actinobacteria Exhibit Metabolic Capabilities for Degrading the Toxic and Persistent Herbicide Metribuzin. Toxics 2024, 12, 709. https://doi. Abstract: Metribuzin, a widely used triazine herbicide, persists in agri...

Citation: Rebai, H.; Sholkamy, E.N.; Abdelhamid, M.A.A.; Prakasam Thanka, P.; Aly Hassan, A.; Pack, S.P.; Ki, M.-R.; Boudemagh, A. Soil Actinobacteria Exhibit Metabolic Capabilities for Degrading the Toxic and Persistent Herbicide Metribuzin. Toxics 2024, 12, 709. https://doi. Abstract: Metribuzin, a widely used triazine herbicide, persists in agri...

The extensive use of neonicotinoid pesticides in the past two decades caused serious impacts on ecosystems due to their toxicity [1]. Finding solutions to eliminate neonicotinoids' residual levels in the environment should be a priority issue. Here, the degradation and detoxification of thiamethoxam (TMX) by the bacterial strain Labrys portucalensi...

Glyphosate, also known as N-phosphonomethylglycine, is the herbicide that is widely used across the globe. As there are concerns over its potential toxicity to non-target soil species, there is a growing interest in identifying glyphosate-degrading microorganisms in soil. Biodegradation, by actinobacteria, is a very promising approach to eliminate...

Thiamethoxam (TMX) is an effective neonicotinoid insecticide. However, its widespread use is detrimental to non-targeted organisms and water systems. This study investigates the biodegradation of this insecticide by Labrys portucalensis F11. After 30 days of incubation in mineral salt medium, L. portucalensis F11 was able to remove 41%, 35% and 100...

The pollution of water resources by pesticides poses serious problems for public health and the environment. In this study, Actinobacteria strains were isolated from three wastewater treatment plants (WWTPs) and were screened for their ability to degrade 17 pesticide compounds. Preliminary screening of 13 of the isolates of Actinobacteria allowed t...

Actinobacteria have many properties that make them good candidates for the bioremediation of sites contaminated by several organic and inorganic pollutants. However, studies on the biodegradation of used motor oils by Actinobacteria, compared to other bacteria, remain little studied. Actinobacteria were isolated from soil contaminated with used mot...

The presence and biodiversity of Actinobacteria in Algerian hot springs was explored using water samples from four thermal springs located in northeastern Algeria. Twenty-three morphologically distinct isolates were isolated and identified. Analysis of the 16S rRNA sequences showed that the isolates were assigned to the Streptomycetaceae, Nocardiac...

Aims of the work: Thiamethoxam is a neonicotinoid insecticide used to control a wide range of pests in a broad variety of agricultural fields. Thiamethoxam may pose some risk to the environment and the health of living organisms. The objective of this study is to isolate actinomycetes strains able to degrade thiamethoxam. Methods: In the present st...

The old methods of agriculture were based on the use of intensive manual labor. The twentieth century saw the birth of a revolution in agricultural practices, which relied mainly on plant protection techniques. These new perspectives have paved the way for an agriculture dominated by pesticides. The use of these molecules has improved yields and cr...

Wastewater poses a serious threat to the receiving environment. It is considered one of the main causes of various surface water and groundwater pollution problems. To prevent these risks, wastewater must be properly treated before being discharged into the various environmental compartments. The present study deals with the evaluation of the waste...

Fenhexamid is a fungicide fromhydroxyanil family with excellent activity against phyto-pathogenic fungi such as Botrytis cinerea, Moniliniaspp and Scleorotiniasclerottioum. The rate of disappearance of this fungicide in natural water seems to be slow and can be accumulated in the body of aquatic organisms. Therefore, it can be an endocrine disrupto...

Les actinobactéries sont largement distribuées dans les écosystèmes terrestres mais aussi aquatiques. Ces bactéries sont connues par leurs aptitudes à produire plusieurs biomolécules notamment les enzymes. Les enzymes hydrolytiques des actinobactéries jouent un rôle important dans la dégradation des différents polymères complexes, permettant ainsi...

In this study, we tested the ability of Streptomyces to use for their growth benzene, toluene, ethylbenzene, and o-, m-, p-xylenes as sole source of carbon and energy. These bacteria were isolated from agricultural soils and activated sludge samples from a wastewater treatment plant. The results show that Streptomyces are capable of degrading at le...

The presence of Actinobacteria in Algerian hot springs was proved for the first time in this work. From water samples, 23 morphologically distinct strains were isolated and successfully identified. 16S rRNA sequence analysis showed that the isolates were represented in the families Streptomycetaceae, Nocardiaceae and Microbacteriaceae, the majority...

Benzene and its derivatives, toluene, ethylbenzene and xylenes (BTEXs) are volatile monocyclic aromatic compounds which are widely distributed in nature and highly hazardous to human and animal health. The species belonging to the genus Nocardia are filamentous bacteria widely present in the flocs of activated sludge. They lead to the formation of...

From an agricultural soil sample from the region of Ain M'Lila and a sample of activated sludge from the Ibn Ziad-Constantine wastewater treatment plant, we isolated respectively 80 and 18 phenotypically different actinobacteria. The samples in question were the subject of a physic-chemical analysis. Firstly, we conducted a functional study by test...

Volatile organic compounds are considered as major sources of air pollution. They cause toxicity problems, bad odors, global warming, etc. Methyl ethyl ketone (MEK) is used in the formulation of lacquer type paints, varnishes, cleaners, thinners, etc. and in many other industries such as the manufacture of synthetic leather and in the decaffeinatio...

Wastewater can be defined as water degraded mainly by human activities. This water must be treated before being reintroduced into the supply circuits. Wastewater from the agricultural sector can be difficult to process because of the presence of many persistent pesticides. The Ortiva fungicide has been used for several years worldwide since 1996. I...

Deux champignons responsables de la pourriture de bois ont été isolés à partir du bois de l'essence Pinus halepensis. Ils ont été identifiés par leurs aspects culturels et morphologiques comme étant: Tramates sp et Memnoniella sp. L'isolement d'actinomycètes à partir de différents écosystèmes nous a permis d'obtenir 80 souches pures. La technique d...

In order to define the isolation conditions of actinomycetes from desert soils, the soils of the town of Biskra, situated at the gate of the Algerian Sahara was analyzed. Two types of samples have been prepared; the firt one was heated up at 110 °C during 10 minutes and the second did not undergo any heat processing. The isolation was carried out f...

The study of the biodegradability of organic substances is essential in determining the behaviour of volatile organic compounds in natural environments or a biological system for effluent treatment. The present study contributes to the comprehension of the biological phenomena controlling the degradation of methanol in a series of batch-mode operat...

On a batch of fifty-five strains of actinomycetes isolated from arid soil samples (the region of Biskra), ten different filamentous strains of actinomycetes were purified.The antibacterial activity was sought by two agar diffusion techniques against five test-bacteria (Escherichi coli, Pseudomonas aeruginosa, Bacillus cereus, Streptococcus faecalis...

On a batch of fifty-five strains of actinomycetes isolated from arid soil samples (the region of Biskra), ten different filamentous strains of actinomycetes were purified. The antibacterial activity was sought by two agar diffusion techniques against five test-bacteria (Escherichi coli, Pseudomonas aeruginosa, Bacillus cereus, Streptococcus faecali...

In search for new antibiotics from actinomycetes, investigating extreme habitats enhances the probability for isolating novel producers. In this context, the antibacterial activity of an actinomycete strain isolated from saltpans's water (Ain Mlila) was studied. According to morphological and macromorphological characters, this strain could be assi...

In search for new antibiotics from actinomycetes, investigating extreme habitats enhances the probability for isolating novel producers. In this context, the antibacterial activity of an actinomycete strain isolated from saltpans's water (Ain Mlila) was studied. According to morphological and macromorphological characters, this strain could be assi...

As part of a research program whose aim is to identify new antifungal metabolites from rare actinomycetes, three Saharan soils from south east Algeria were analyzed. Twenty-seven (27) strains of actinomycetes were isolated and tested for their antifungal activity. The soil from the region of Biskra gave the highest number of actinomycetes, i.e. 52%...

Twenty-five strains of actinomycetes were isolated from samples of water, soil and tree barks collected at two sites located in the north–east of Algeria. Antimicrobial activity was tested using the agar cylinder method against three Gram-positive bacteria, three Gram-negative bacteria, three yeasts and three filamentous fungi. Among the 25 isolate...