UPTAKE OF<sup>51</sup>Cr AS AN INDICATOR OF METABOLIC CHANGE IN WHEAT ROOT TIPS

Bourque, Geneviève; Pengo, Vittorio; Weinberger, Pearl

doi:10.1139/y67-026

Cited by 9 publications

(1 citation statement)

References 5 publications

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“…Most of the Cr in all of the plant tops (excluding seeds) was in the water-and acid-soluble fractions. These data suggest that Cr from plant tops would be soluble in the stomach of a with the conclusion of Bourque et al (1966), who reported monogastric animal. However, a difference was noted be-that Cr in wheat roots was predominantly bound to protween the extractability of Cr in wheat and bean roots.…”

Section: Resultsmentioning

confidence: 59%

Chromium in plants. Distribution in tissues, organelles, and extracts and availability of bean leaf chromium to animals

Huffman¹,

Allaway²

1973

J. Agric. Food Chem.

111

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or Cr(VI) was added in seven increments to plant nutrient solutions, to a final level of 0.044 ppm. The Cr was added over a 14-day period at flowering stage in bean and wheat plants. At maturity bean plants contained about 55% and wheat had removed 81% of the added 51Cr. Bean roots contained about 92% and wheat roots 95% of the total plant 51Cr. Seeds contained only 0.02 to 0.1% of the total plant 51Cr. Uptake and translocation of 51 Cr differed only slightly between the Cr(III) and Cr(VI) sources. Most of the 51Cr in fresh bean leaves was present as a soluble low molecular weight anionic complex that was not associated with any subcellular organelle. Rats fed the 51Cr-labeled bean leaves retained less than 0.5% of the dose after 48 hr.Recent evidence has shown that Cr is essential in animal and human nutrition (Mertz, 1969;Schroeder, 1968;Underwood, 1971). Although there is a lack of information on effective sources of dietary Cr, plants may be a major source of Cr for animals and man. This work was undertaken to determine how much Cr is taken up by plants

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Section: Resultsmentioning

confidence: 59%

Chromium in plants. Distribution in tissues, organelles, and extracts and availability of bean leaf chromium to animals

Huffman¹,

Allaway²

1973

J. Agric. Food Chem.

111

View full text Add to dashboard Cite

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Chromium accumulation and distribution in crop plants

Lahouti

Peterson

1979

J Sci Food Agric

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Crop plants accumulated chromium from nutrient solutions labelled with either 51CrIII or 51CrVI and retained approximately 98 % of the elements in the roots. Of the 9 crop species examined, cauliflower plants accumulated the most chromium in both shoots and roots and mung bean seedlings the least. Species differences of approximately 10-fold in the tops and 5-fold in the roots were recorded. The roots of each species supplied with 51CrIII contained more chromium than those supplied with W r V I but the reverse was found in the shoots. There was a greater proportion of soluble chromium in plants supplied with 51CrVI than in those supplied with WrIII, the major soluble compound being tentatively identified as trioxalato-CrIII. Little chromium was associated with cell organelles or soluble proteins.

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