Biodegradation of thifensulfuron-methyl by Ochrobactrum sp. in liquid medium and soil

Zhao, Wei; Xu, Lei; Li, Dong-Zhi; Li, Xuefeng; Wang, Chengju; Zheng, Mingqi; Pan, Canping; Qiu, Lihong

doi:10.1007/s10529-015-1807-3

Cited by 21 publications

(13 citation statements)

References 19 publications

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“…Such a case was observed by Widehem et al (2002) 32 who have isolated from diuron treated soil, a strain of Arthrobacter sp. able to transform the herbicide completely in 24 h. Results going in the same direction were reported by Zhao et al (2015), 33 with a TBM-adapted Ochrobactrum sp. strain, which can degrade 55% of the herbicide in 8 days.…”

Section: Discussionsupporting

confidence: 85%

Effect of sulfonylurea tribenuron methyl herbicide on soil Actinobacteria growth and characterization of resistant strains

Rachedi

Zermane

Tir

et al. 2018

Brazilian Journal of Microbiology

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Repeated application of pesticides disturbs microbial communities and cause dysfunctions on soil biological processes. Granstar® 75 DF is one of the most used sulfonylurea herbicides on cereal crops; it contains 75% of tribenuron-methyl. Assessing the changes on soil microbiota, particularly on the most abundant bacterial groups, will be a useful approach to determine the impact of Granstar® herbicide. For this purpose, we analyzed Actinobacteria, which are known for their diversity, abundance, and aptitude to resist to xenobiotic substances. Using a selective medium for Actinobacteria, 42 strains were isolated from both untreated and Granstar® treated soils. The number of isolates recovered from the treated agricultural soil was fewer than that isolated from the corresponding untreated soil, suggesting a negative effect of Granstar® herbicide on Actinobacteria community. Even so, the number of strains isolated from untreated and treated forest soil was quite similar. Among the isolates, resistant strains, tolerating high doses of Granstar® ranging from 0.3 to 0.6% (v/v), were obtained. The two most resistant strains (SRK12 and SRK17) were isolated from treated soils showing the importance of prior exposure to herbicides for bacterial adaptation. SRK12 and SRK17 strains showed different morphological features. The phylogenetic analysis, based on 16S rRNA gene sequencing, clustered the SRK12 strain with four Streptomyces type strains (S. vinaceusdrappus, S. mutabilis, S. ghanaensis and S. enissocaesilis), while SRK17 strain was closely related to Streptomyces africanus. Both strains were unable to grow on tribenuron methyl as unique source of carbon, despite its advanced dissipation. On the other hand, when glucose was added to tribenuron methyl, the bacterial development was evident with even an improvement of the tribenuron methyl degradation. In all cases, as tribenuron methyl disappeared, two compounds were detected with increased concentrations. These by-products appeared to be persistent and were not degraded either chemically or by the studied strains. Based on these observations, we suggested that bacterial activity on carbon substrates could be directly involved in the partial breakdown of tribenuron methyl, by generating the required acidity for the first step of the hydrolysis. Such a process would be interesting to consider in bioremediation of neutral and alkaline tribenuron methyl-polluted soils.

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Section: Discussionsupporting

confidence: 85%

Effect of sulfonylurea tribenuron methyl herbicide on soil Actinobacteria growth and characterization of resistant strains

Rachedi

Zermane

Tir

et al. 2018

Brazilian Journal of Microbiology

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“…Biodegradability, photodegradation, persistence, soil mobility, and the accumulation in living organisms of sulfur-containing herbicides are currently in extensive research phases [10,11,12,13,14].…”

Section: Introductionmentioning

confidence: 99%

The Effect of New Thiophene-Derived Aminophosphonic Derivatives on Growth of Terrestrial Plants: A Seedling Emergence and Growth Test

et al. 2016

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Abstract:The aim of this work was to synthesize selected thiophene-derived aminophosphonic systems and evaluate the phytotoxicity of newly obtained products according to the OECD 208 Guideline. Seven new thiophene-derived N-substituted dimethyl aminomethylphosphonic acid esters 2a-h were synthesized by the addition of an appropriate phosphite to azomethine bond of starting Schiff bases 1a-h, and NMR spectroscopic properties of aminophosphonates were investigated. These eight compounds were analyzed in regard to their phytotoxicity towards two plants, radish (Raphanus sativus) and oat (Avena sativa). On the basis of the obtained results, it was found that tested aminophosphonates 2a-h showed an ecotoxicological impact against selected plants, albeit to various degrees.

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“…A eficiência em processos de biorremediação depende de diversos fatores físicos e químicas do solo como potencial hidrogeniônico (pH), temperatura, aeração, biosdisponibilidade do composto, umidade, condições redox, matéria orgânica, nutrientes, natureza e teor de argila, óxidos metálicos, e capacidade de troca catiônica (CHEN et al, 2015;ZHAO et al, 2015;GUPTA et al, 2016).…”

Section: Fatores Que Influenciam a Biorremediaçãounclassified

“…Simultaneamente aos benefícios adquiridos com o uso de agroquímicos na agricultura vieram também problemas ambientais e sociais relacionados com o emprego indiscriminado que foi impulsionado, principalmente, a partir do processo de modernização ocorrido com a Revolução Verde (ZHAO et al, 2015). Um dos principais objetivos da Revolução Verde era incentivar a crescença da produção mundial de alimentos a partir de técnicas inovadoras como o uso de insumos agrícolas (fertilizantes e pesticidas) e melhoramento genético.…”

Section: Introductionunclassified

Biotecnologias De Remediação De Solos Contaminados Com Agroquímicos

Alves¹,

Bandeira²,

Borges³

et al. 2016

Agr. Acad.

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RESUMOA contaminação do ambiente agrícola tornou-se um grave problema global. O uso indiscriminado de pesticidas tem provocado diversos problemas à saúde humana, toxicidade a organismos alvo e não alvo, além de alterar a qualidade do ar, água e solo. Em 2008, o Brasil se tornou o maior consumidor mundial de pesticidas e por isso cresce o interesse em investigar estratégias de remediação in situ desses compostos. Neste sentido o objetivo desta pesquisa foi discutir sobre as diferentes estratégias de fitorremediação e vermirremediação de solos contaminados com pesticidas e as respectivas vantagens e limitações de cada uma dessas biotecnologias. Observou-se que as biotecnologias apresentadas neste trabalho apresentam vantagens econômicas e ambientais em comparação com os métodos físicos e químicos, porém apresentam limitações que precisam ser superadas através de pesquisa científica e ensaios em escala de laboratório, piloto e campo. Muitos trabalhos têm sido desenvolvidos na área de biotecnologias de remediação de solos contaminados por pesticidas, entretanto a maioria ocorre em condições de clima temperado. O Brasil precisa explorar mais essas biotecnologias uma vez que dispõe de elevado potencial por possuir condições climáticas e biodiversidade mais favorável em comparação com regiões de clima temperado. PALAVRAS-CHAVE: Contaminantes orgânicos, fitorremediação, vermirremediação. REMEDIATION BIOTECHNOLOGIES FOR CONTAMINATED SOIL WITH AGROCHEMICALSABSTRACT The contamination of the agricultural environment has become a major global problem. The indiscriminate use of pesticides has caused several problems to human health, toxicity to target organisms and non-target, and change the quality of air, water and soil. In 2008, Brazil became the world's largest consumer of pesticides and therefore growing interest in investigating remediation strategies in situ these compounds. In this sense, the objective of this research is to discuss the different strategies of phytoremediation and vermiremediation of soils contaminated with AGRARIAN ACADEMY, Centro Científico Conhecer -Goiânia, v.3, n.05; p.2016 28 pesticides and their advantages and limitations of each of these biotechnologies. It was observed that biotechnologies presented in this work have economic and environmental advantages compared to the physical and chemical methods, but have limitations that must be overcome through scientific research and conduct testing in laboratory scale, pilot scale and field scale. Many studies have been developed in the area contaminated by pesticides soil remediation technologies, though most occur in temperate conditions. Brazil needs to further explore these biotechnologies since it has high potential for having climatic conditions and more favorable biodiversity compared with temperate regions. KEYWORDS: Phytoremediation, vermiremediation, organic contaminants. INTRODUÇÃOAs principais fontes de contaminação do solo e água provém de rejeitos urbanos e industriais, agroquímicos e/ou vazamentos acidentais de compostos xenobióticos. Q...

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Biodegradation of thifensulfuron-methyl by Ochrobactrum sp. in liquid medium and soil

Abstract: Addition of strain ZWS16 to both liquid medium and sterilized soil accelerated the degradation of thifensulfuron-methyl. Strain ZWS16 might therefore be useful in removing thifensulfuron-methyl contamination in water and soil.

Cited by 21 publications

References 19 publications

Effect of sulfonylurea tribenuron methyl herbicide on soil Actinobacteria growth and characterization of resistant strains

Effect of sulfonylurea tribenuron methyl herbicide on soil Actinobacteria growth and characterization of resistant strains

The Effect of New Thiophene-Derived Aminophosphonic Derivatives on Growth of Terrestrial Plants: A Seedling Emergence and Growth Test

Biotecnologias De Remediação De Solos Contaminados Com Agroquímicos

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