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. 1983 Aug;72(4):1051–1055. doi: 10.1104/pp.72.4.1051

Sugar and Organic Acid Constituents in White Clover 1

Lawrence C Davis 1, Philip Nordin 1
PMCID: PMC1066373  PMID: 16663119

Abstract

Major ethanol-soluble carbohydrate and organic acid constituents of white clover (Trifolium repens) have been identified by use of high-performance liquid chromatography and gas chromatography. In leaves, petioles, roots, and nodules, pinitol (3-O-methyl chiro-inositol) is the predominant sugar, with sucrose present in lower concentration. In leaves and petioles there are significant levels of α- and β-methyl glucosides, linamarin, glucose, and fructose. In the nodules glucose is rarely present at detectable levels. The concentration of pinitol is generally greater than 25 millimolar in each tissue examined whereas the level of sucrose varies depending on the time of day. Sucrose is the major sugar significantly labeled during 1 hour administration of 14CO2 and accounts for more than 99% of all the radioactivity detected in the nodules at early times. Between 3 and 7 hours after labeling, 6% of the radioactivity is found in the organic acids fraction and 5% in the basic fraction of nodules. Malonic acid does not appear to be present in unusually high concentrations in either leaves or nodules of white clover.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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