Abstract Typha domingensis (cattail) is a native macrophyte known by its capacity to tolerate several heavy metals effects and the potential use for phytoremediation. However, in despite that cadmium (Cd) is one of the most toxic pollutants; its effects in T. domingensis biology remain uninvestigated. Th...
Biodegradación Ambiental,
Biomasa,
Cadmio/metabolismo,
Cadmio/toxicidad,
Clorofila/química,
Clorofila/metabolismo,
Relación Dosis-Respuesta a Droga,
Fotosíntesis/fisiología,
Hojas de la Planta/química,
Hojas de la Planta/metabolismo,
Raíces de Plantas/química,
Raíces de Plantas/metabolismo,
Typhaceae/crecimiento & desarrollo,
Typhaceae/metabolismo
Abstract Cellulosimicrobium cellulans CWS2, a novel strain capable of utilizing benzo(a)pyrene (BaP) as the sole carbon and energy source under nitrate-reducing conditions, was isolated from PAH-contaminated soil. Temperature and pH significantly affected BaP biodegradation, and the strain exhibited enha...
Actinobacteria/clasificación,
Actinobacteria/aislamiento & purificación,
Actinobacteria/metabolismo,
Anaerobiosis,
Benzo(a)pireno/metabolismo,
Biotransformación,
Cadmio/metabolismo,
Carbono/metabolismo,
Ácidos Carboxílicos/metabolismo,
Medios de Cultivo/química,
Inhibidores Enzimáticos/metabolismo,
Cromatografía de Gases y Espectrometría de Masas,
Glucosa/metabolismo,
Concentración de Iones de Hidrógeno,
Microbiología del Suelo,
Contaminantes del Suelo/metabolismo,
Temperatura
Abstract Metallothioneins are a superfamily of low-molecular-weight, cysteine (Cys)-rich proteins that are believed to play important roles in protection against metal toxicity and oxidative stress. The main purpose of this study was to investigate the effect of heterologous expression of a rice metallot...
Cadmio/metabolismo,
Etanol/metabolismo,
Expresión Génica,
Peróxido de Hidrógeno/metabolismo,
Metalotioneína/genética,
Metalotioneína/metabolismo,
Oryza/genética,
Estrés Oxidativo,
Proteínas de Plantas/genética,
Proteínas de Plantas/metabolismo,
Isoformas de Proteínas/genética,
Isoformas de Proteínas/metabolismo,
Saccharomyces cerevisiae/genética,
Saccharomyces cerevisiae/metabolismo
Abstract Fourteen Trichoderma isolates were evaluated for their tolerance to two heavy metals, nickel and cadmium. Three isolates, MT-4, UBT-18, and IBT-I, showed high levels of nickel tolerance, whereas MT-4, UBT-18, and IBT-II showed better tolerance of cadmium than the other isolates. Under nickel str...
Cadmio/metabolismo,
Níquel/metabolismo,
Trichoderma/metabolismo,
Cinética,
Níquel/química,
Microbiología del Suelo,
Biodegradación Ambiental,
Cadmio/química,
Trichoderma/clasificación,
Trichoderma/crecimiento & desarrollo,
Trichoderma/aislamiento & purificación
The effects of acidic, basic and neutral reagents on the recovery of Pb2+ and Cd2+ from metal-loaded biomass of wild cocoyam (C. bicolor) were investigated by eluting the biomass in five successive cycles using 0.01 M HCl, 0.1 M HCl, 0.01 M NaOH, 0.1 M NaOH and distilled water at different contact times....
Plomo/aislamiento & purificación,
Cadmio/aislamiento & purificación,
Colocasia/metabolismo,
Araceae/metabolismo,
Indicadores y Reactivos,
Plomo/metabolismo,
Cadmio/metabolismo,
Biomasa,
Adsorción,
Espectroscopía Infrarroja por Transformada de Fourier,
Hidróxido de Sodio,
Plomo/química,
Cadmio/química,
Purificación del Agua,
Metales Pesados,
Colocasia/química
This report is based on the investigation of the effect of temperature on the removal of Pb2+ and Cd2+ in aqueous effluent using C. bicolor biomass in a batch sorption process. The result showed that the most suitable sorption temperature was 40ºC with maximum sorption capacities of 49.02 mg/g and 52.63...
Adsorción,
Administración de Residuos,
Plomo/metabolismo,
Plomo/química,
Cadmio/metabolismo,
Cadmio/química,
Metales Pesados,
Temperatura,
Termodinámica,
Biomasa,
Concentración de Iones de Hidrógeno,
Araceae,
Plomo/aislamiento & purificación,
Cadmio/aislamiento & purificación
Ressaltando a importância da exposiçäo ocupacional e näo-ocupacional ao cádmio, é feita uma revisäo sobre as variáveis que influenciam a trajetória deste metal no organismo. A absorçäo, distribuiçäo, acumulaçäo, excreçäo e meia-vida biológica do cádmio säo discutidas sob o ponto de vi...
