Effects of binary metal combinations on zinc, copper, cadmium and lead uptake and distribution in Brassica juncea.
J Trace Elem Med Biol
; 44: 32-39, 2017 Dec.
Article
en En
| MEDLINE
| ID: mdl-28965594
ABSTRACT
The interaction between lead, copper, cadmium and zinc in their binary combinations was investigated in Indian mustard seedlings (Brassica juncea L. var. Malopolska). Fourteen-days-old seedlings were treated with Pb(NO3)2, CuSO4, CdCl2, ZnSO4 at 50µmol of metal ion concentration and at 25µmol of each metal ion in combinations. Metal combinations were generally more inhibiting in terms of biomass production. This inhibiting effect followed an order Cu+Cd>Cu+Zn, Cd+Pb>Cu+Pb>Zn+Pb, Cu>Cd>Zn>Zn+Cd>Pb. We observed synergistic and antagonistic effects of metal uptake in binary metal treatments, suggesting metal crosstalk at the plant uptake site. Metal content in plant tissues varied among different combinations. The metal concentrations followed an order of Pb>Cu>Zn>Cd in roots, Zn>Cu>Pb>Cd in the stem and Zn>Cu>Cd>Pb in leaves. Presence of metals altered the distribution of micronutrients (Cu, Zn) in plants Cu concentration was lowered in roots and leaves and increased in stems; Zn content was increased in plants, with stems having up to 4 or 5 times more Zn than in control plants.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Zinc
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Cadmio
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Cobre
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Plomo
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Planta de la Mostaza
Idioma:
En
Revista:
J Trace Elem Med Biol
Asunto de la revista:
METABOLISMO
/
SAUDE AMBIENTAL
Año:
2017
Tipo del documento:
Article