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Plant Physiol. Oct 1966; 41(8): 1280–1284.
PMCID: PMC550518

Changes in Fatty Acids of Alfalfa Roots During Cold Hardening 1,2

Abstract

The fatty acid composition of nonhardy Caliverde and hardy Vernal alfalfa roots as a function of the hardening process was determined by gas-liquid chromatography.

The fatty acid contents of nonhardy Caliverde and hardy Vernal alfalfa root tissue increased approximately 2-fold during hardening. This increase was associated with hardening but could not be used to distinguish between varieties. The fatty acid composition of the alfalfa root changed during hardening due to the preferential accumulation of polyunsaturated fatty acids. The preferential deposition of linoleic and linolenic fatty acids caused an increase in the average number of unsaturated bonds in the fatty acids. Apparently, lipid metabolism of the roots was altered during hardening.

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Selected References

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  • FARQUHAR JW, INSULL W, Jr, ROSEN P, STOFFEL W, AHRENS EH., Jr The analysis of fatty acid mixtures by gas-liquid chromatography; construction and operation of an ionization chamber instrument. Nutr Rev. 1959 Aug;17(8 Suppl):1–30. [PubMed]
  • Jung GA, Smith D. Influence of Extended Storage at Constant Low Temperature on Cold Resistance and Carbohydrate Reserves of Alfalfa and Medium Red Clover. Plant Physiol. 1960 Jan;35(1):123–125. [PMC free article] [PubMed]
  • Lyons JM, Wheaton TA, Pratt HK. Relationship between the Physical Nature of Mitochondrial Membranes and Chilling Sensitivity in Plants. Plant Physiol. 1964 Mar;39(2):262–268. [PMC free article] [PubMed]
  • RADIN NS, HAJRA AK, AKAHORI Y. Preparation of methyl esters. J Lipid Res. 1960 Apr;1:250–251. [PubMed]

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