Data/hora: 11/06/2024 00:56:36

Provedor de dados: | 42
País: | Brazil
Título: | Comparative study on the biodegradation of chlorpyrifos-methyl by Bacillus megaterium CM-Z19 and Pseudomonas syringae CM-Z6
Autores: | ZHU,JIANGWEI; ZHAO,YAN; RUAN,HONGHUA.
Data: | 2019-01-01
Ano: | 2019
Palavras-chave: | Bacillus megaterium; Pseudomonas syringae; Chlorpyrifos-methyl; 3; 5; 6-trichloro-2-pyridinol; Biodegradation.
Resumo: | Abstract: The strains CM-Z19 and CM-Z6, which are capable of highly degrading chlorpyrifos-methyl, were isolated from soil. They were identified as Bacillus megaterium CM-Z19 and Pseudomonas syringae CM-Z6, respectively, based on the 16S rRNA and an analysis of their morphological, physiological and biochemical characteristics. The strain CM-Z19 showed 92.6% degradation of chlorpyrifos-methyl (100 mg/L) within 5 days of incubation, and the strain CM-Z6 was 99.1% under the same conditions. In addition, the degradation characteristics of the two strains were compared and studied, and the results showed that the strain CM-Z19 had higher phosphoesterase activity and ability to degrade the organophosphorus pesticide than did the strain CM-Z6. However, the strain CM-Z19 could not degrade its first hydrolysis metabolite 3,5,6-trichloro-2-pyridinol (TCP) and could not completely degrade chlorpyrifos-methyl. The strain CM-Z6 could effectively degrade TCP and could degrade chlorpyrifos-methyl more quickly than strain CM-Z19.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000500624
Editor: | Academia Brasileira de Ciências
Relação: | 10.1590/0001-3765201920180694
Formato: | text/html
Fonte: | Anais da Academia Brasileira de Ciências  v.91 n.3 2019
Fonte: | info:eu-repo/semantics/openAccess