Growth of Plants in Solution Culture Containing Low Levels of Chromium

Huffman, E. W. D.; Allaway, W. H.

doi:10.1104/pp.52.1.72

Cited by 61 publications

(10 citation statements)

References 16 publications

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“…The trace element Cr is not ranked as an "essential element" for plants (Huffman and Allaway, 1973). However, the essentiality of Cr in animal nutrition and for human health (Mertz, 1969) raises the interest on the role of plants as Cr transmitters in the food chain.…”

Section: Introductionmentioning

confidence: 99%

Uptake and apoplastic retention of EDTA‐ and phytosiderophore‐chelated chromium(III) in maize

Erenoğlu

Patra

Khodr

et al. 2007

J. Plant Nutr. Soil Sci.

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Increasing the mobilization and root uptake of chromium (Cr) by synthetic and plant-borne chelators might be relevant for the design of phytoremediation strategies on Cr-contaminated sites. Short-term uptake studies in maize roots supplied with 51 CrCl 3 or 51 Cr(III)-EDTA led to higher apoplastic Cr contents in plant roots supplied with 51 CrCl 3 and in Fesufficient plants relative to Fe-deficient plants, indicating that Fe stimulated co-precipitation of Cr. Concentration-dependent retention of Cr in a methanol:chloroform-treated cell-wall fraction was still saturable and in agreement with the predicted tendency of Cr(III) to precipitate as Cr(OH) 3 . To investigate a possible stimulation of Cr(III) uptake by phytosiderophores, Fe-deficient maize roots were exposed for 6 d to Cr(III)-EDTA or Cr(III)-DMA (2'-deoxymugineic acid). Relative to plants without Cr supply, the supply of both chelated Cr species in a subtoxic concentration of 1 lM resulted in alleviation of Fe deficiency-induced chlorosis and higher Cr accumulation. Long-term Cr accumulation from Cr(III)-DMA was similar to that from Cr(III)-EDTA, and Cr uptake from both chelates was not altered in the maize mutant ys1, which is defective in metal-phytosiderophore uptake. We therefore conclude that phytosiderophores increase Cr solubility similar to synthetic chelators like EDTA, but do not additionally contribute to Cr(III) uptake from Cr-contaminated sites.

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Section: Introductionmentioning

confidence: 99%

Uptake and apoplastic retention of EDTA‐ and phytosiderophore‐chelated chromium(III) in maize

Erenoğlu

Patra

Khodr

et al. 2007

J. Plant Nutr. Soil Sci.

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“…Added support for essentiality comes from the use of chromium to increase the yield of potatoes, enhance the growth of citrus and avocado trees, and increase the sugar content and ripening of grapes (Adriano 1986). Studies by Huffman and Allaway (1973), however, showed fairly conclusively that chromium was not essential for plant growth.…”

Section: Plantsmentioning

confidence: 94%

Chromium in the Canadian environment

Nriagu¹,

Kabir²

1995

Environ. Rev.

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The widening use of chromium and its compounds by local industries has led to a growing concern about the effects of chromium contamination on the Canadian environment. This report summarizes the data on Canadian sources and the concentrations of chromium in air, water, sediments, soil, terrestrial wildlife and aquatic biota. It reviews what little is currently known about the cycling of chromium in Canadian ecoystems, and the need for measuring Cr(II1) and Cr(V1) rather than total Cr in the environmental media is emphasized. The potential effects of elevated levels of chromium on plants, soil microorganisms, wildlife, and aquatic biota are discussed. Th6 human health effects are not covered. The conclusion is reached that chromium pollution has become a threat to Canadian ecosystems, especially at the local scale where the ambient chromium concentrations in some surface waters, sediments, and soils are now close to or above the toxicity threshold for a number of the more sensistive organisms.

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“…It has not been possible so far to establish that Cr is an essential element required by plants, however, addition of Cr to soils deficient in the element has been shown to increase growth rates and yields of potatoes, maize, rye, wheat or oats (Scharrer and Schropp, 1935;Huffman and Allaway, 1973;Bertrand and De Wolf, 1986). Nickel appears to be an essential element for plants (Farago and Cole, 1988).…”

Section: Chromium and Nickelmentioning

confidence: 99%