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Cheng AL, Sheen SJ. Relative sterol composition in the genus Nicotiana. Theor Appl Genet. 1972;42(4):181-6doi: 10.1007/BF00280795.
Cheng, A. L., & Sheen, S. J. (1972). Relative sterol composition in the genus Nicotiana. TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 42(4), 181-6. https://doi.org/10.1007/BF00280795
Cheng, A L, and Sheen, S J. "Relative sterol composition in the genus Nicotiana." TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik vol. 42,4 (1972): 181-6. doi: https://doi.org/10.1007/BF00280795
Cheng AL, Sheen SJ. Relative sterol composition in the genus Nicotiana. Theor Appl Genet. 1972 Jan;42(4):181-6. doi: 10.1007/BF00280795. PMID: 24430898.
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Theor Appl Genet. 1972 Jan;42(4):181-6. doi: 10.1007/BF00280795.

Relative sterol composition in the genus Nicotiana.

TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik

A L Cheng, S J Sheen

Affiliations

  1. U. S. Department of Agriculture, Plant Science Research Division, ARS, Beltsville, Maryland.

PMID: 24430898 DOI: 10.1007/BF00280795

Abstract

Stigmasterol, β-sitosterol, campesterol, and cholesterol are the predominant sterols identified by gasliquid chromatographic techniques in the mature leaves of 50 Nicotiana species. The relative composition pattern of the four sterols varies significantly among the subgenera as well as within the subgenus. However, six N. tabacum cultivars showed a similar pattern, of which as an average stigmasterol represents the highest proportion (43%) followed by β-sitosterol (30%), campesterol (19%), and cholesterol (8%) in total sterol content. Negative correlations were obtained for the composition of stigmasterol vs. β-sitosterol, cholesterol vs. campesterol, and cholesterol vs. β-sitosterol. Some correlations between geographic distribution of Nicotiana species and sterol composition were evident. In evaluating phylogenetic relationship between amphiploid species and the possible diploid progenitors, the results of sterol composition are in favor of N. undulata and N. paniculata being the ancestors of N. rustica and the N. sylvestris X N. tomentosiformis as the hybrid combination from which N. tabacum was evolved.

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