The effects of cadmium and zinc interactions on the accumulation and tissue distribution of zinc and cadmium in lettuce and spinach

McKenna, Ilda Melo; Chaney, Rufus L.; Williams, Frederick M.

doi:10.1016/0269-7491(93)90060-2

Cited by 181 publications

(99 citation statements)

References 17 publications

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“…Cadmium concentration of potato tubers was also negatively correlated with extractable Zn levels in soils (McLaughlin et al 1994). In solution culture, Zn decreased the accumulation of Cd in young leaves but not in old leaves (McKenna et al 1993). Zinc appeared to interfere with the translocation of Cd from roots to young leaves by favouring Cd retention in roots, but at a higher Zn content in the solution, Zn might have further interfered with Cd uptake by the roots.…”

Section: Fertilizer Managementmentioning

confidence: 93%

“…High tolerance of ryegrass to Cd toxicity may relate primarily to a low transport rate of Cd into the shoot (Yang et al 1995). Cadmium may be complexed in Cdbinding peptides in roots and old leaves of lettuce and spinach, with the roots and old leaves acting as a barrier to the transport of Cd to young leaves (McKenna et al 1993). The shoot:root ratios of Cd are less than 1 when non-tolerant species are grown on contaminated soils and high shoot:root metal concentration ratios are generally associated with hyperaccumulator species (Brown et al 1994a).…”

Section: Factors Influencing CD Accumulation In Crops Plant Genetic Cmentioning

confidence: 99%

“…Zinc appeared to interfere with the translocation of Cd from roots to young leaves by favouring Cd retention in roots, but at a higher Zn content in the solution, Zn might have further interfered with Cd uptake by the roots. The authors reported that Zn interfered with the distribution of Cd in lettuce and spinach, but the mechanism involved was not apparent (McKenna et al 1993). Due to the varying mechanisms in which Cd and Zn may compete, the ultimate effect on Zn additions to a plant-soil system may vary depending on relative Cd and Zn concentrations, soil properties and plant characteristics.…”

Section: Fertilizer Managementmentioning

confidence: 99%

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Cadmium accumulation in crops

Grant¹,

Buckley²,

Bailey³

et al. 1998

Can. J. Plant Sci.

330

180

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Cadmium is a heavy metal present in soils from natural and anthropogenic sources. Plant uptake of Cd at levels present in the soil solution is dependent on a system that is largely metabolically mediated and competitive with the uptake system for Zn and possibly other metals. Much of the Cd taken up by plants is retained in the root, but a portion is translocated to the aerial portions of the plant and into the seed. The amount of Cd accumulated and translocated in plants varies with species and with cultivars within species. Soil, environmental and management factors impact on the amount of Cd accumulated in plants. Potential methods of reducing the accumulation of Cd in crops include reduction of Cd input to the soil system, site selection, management practices which decrease the concentration of Cd in the soil solution and its uptake and translocation by plants, and development and production of plant cultivars with the genetic tendency for low Cd uptake.

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Section: Fertilizer Managementmentioning

confidence: 93%

Section: Factors Influencing CD Accumulation In Crops Plant Genetic Cmentioning

confidence: 99%

Section: Fertilizer Managementmentioning

confidence: 99%

See 1 more Smart Citation

Cadmium accumulation in crops

Grant¹,

Buckley²,

Bailey³

et al. 1998

Can. J. Plant Sci.

330

180

View full text Add to dashboard Cite

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“…Many studies have reported on the effect of Zn 2þ on the uptake and translocation of Cd 2þ in some crops, such as wheat (Triticum aestivum L.) (Choudhary et al 1994), bean (Phaseolus vulgaris L.) (Chaoui et al 1997), and lettuce (Lactuca sativa L.) (McKenna et al 1993). Increasing the supply of Zn in the growth media may reduce the accumulation of Cd in plants, particularly in Zn deficient conditions (Choudhary et al 1994;Oliver et al 1994).…”

Section: Introductionmentioning

confidence: 99%

Effects of zinc activity in nutrient solution on uptake, translocation, and root export of cadmium and zinc in three wheat genotypes with different zinc efficiencies

Sanaeiostovar

Khoshgoftarmanesh

Shariatmadari

2011

Soil Science and Plant Nutrition

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The interactions of zinc (Zn) and cadmium (Cd) in uptake and translocation are common but not consistent. We hypothesized that Cd 2þ and Zn 2þ activity in the apoplasmic solution bathing root-cells could affect Zn accumulation in plants dependent on the wheat genotype. This hypothesis was tested using seedlings of two bread wheat genotypes (Triticum aestivum L. cvs. Rushan and Cross) and one durum wheat genotype (Triticum durum L. cv. Arya) with different Zn efficiencies grown in chelate-buffered nutrient solutions with three Zn 2þ (10 À11.11 , 10

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“…The processing and subsequent release of Zn to the environment is normally accompanied by Cd pollution because Zn ores (ZnS) generally contain 0.1%-5% and sometimes with even higher concentrations of Cd (Adriano, 1996). The association of Cd and Zn in the environment and their chemical similarity can lead to interaction between these two ions (McKenna, Chaney, & Williams, 1993), resulting in the lowering of Cd toxicity (Wajda, Kutemozinska, & Pilipowiez, 1989). Since Cd is a nonessential ion, it is toxic at a lower concentration than Zn (Chakravarty & Srivastava, 1994).…”

Section: Introductionmentioning

confidence: 99%