Kinetics of mercury uptake by oilseed rape and white lupin: influence of Mn and Cu

• Autorzy: Esteban E. , Deza M. J. , Zornoza P.
• Języki publikacji: EN

Abstrakty

EN

Mercury influx in oilseed rape and white lupin was studied using short time influx experiments. The effect of Cu and Mn in Hg influx was also tested. Plants were grown for 2 weeks and then roots were incubated with increasing Hg concentrations (0–50 μM HgCl2), both at 20 ºC and ice-cold temperature. An active, saturable component in Hg uptake was found in oilseed rape and white lupin, with Km and Vmax values in the range of low affinity transporters for essential micronutrients. A reduction in Hg uptake was observed in the presence of Mn for oilseed rape, suggesting that Hg influx is mediated by a Mn transporter. No effects of Cu on Hg influx were observed for any of the two plant species, suggesting a different transport system for Hg and Cu in roots of oilseed rape and white lupin.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2013
• Tom: 35
• Numer: 07
• Opis fizyczny: p.2339-2344,fig.,ref.

Twórcy

autor

Esteban E.

• Dpto de Quı´mica Agrı´cola (M-10), Facultad de Ciencias, Universidad Auto´noma de Madrid, C/Francisco Toma´s y Valiente, 7, 28049 Madrid, Spain

autor

Deza M. J.

• Dpto de Quı´mica Agrı´cola (M-10), Facultad de Ciencias, Universidad Auto´noma de Madrid, C/Francisco Toma´s y Valiente, 7, 28049 Madrid, Spain
• Dpto de Quı´mica Agrı´cola (M-10), Facultad de Ciencias, Universidad Auto´noma de Madrid, C/Francisco Toma´s y Valiente, 7, 28049 Madrid, Spain

autor

Zornoza P.

• Dpto de Quı´mica Agrı´cola (M-10), Facultad de Ciencias, Universidad Auto´noma de Madrid, C/Francisco Toma´s y Valiente, 7, 28049 Madrid, Spain

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