Dioxane lignin from shoots of the cotton plant of variety 108-F. I

The dioxane lignin has been isolated by Pepper's method from two-week shoots of the cotton plant of variety 108-F and has been separated into two fractions — insoluble and soluble in ether — DLA-A and DLA-B, respectively. It has been shown that in the early stage of development of the cotton plant a low-molecular-weight lignin with a low degree of methoxylation and distinctly different from the lignin from ripe stems of the same cotton plant is synthesized.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 96–98, January–February, 1984.     

Position specificity of the fatty acids in the phospholipids of the cotton plant variety 108-F

Summary It has been shown by enzymatic hydrolysis with phospholipase A that it is mainly unsaturated fatty acids that are esterified in positions of the PC, PE, and PI molecules (93.2, 86.2, and 76.8%, respectively), which is normal for phospholipids.From the results on the position distribution of the fatty acids we have calculated the possible molecular compositions of the PCs, PEs, and PIs.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 589–590, September–October, 1976.     

Position specificity of the fatty acids in the phospholipids of the cotton plant variety 108-F

It has been shown by enzymatic hydrolysis with phospholipase A that it is mainly unsaturated fatty acids that are esterified in positions of the PC, PE, and PI molecules (93.2, 86.2, and 76.8%, respectively), which is normal for phospholipids. From the results on the position distribution of the fatty acids we have calculated the possible molecular compositions of the PCs, PEs, and PIs.     

Phospholipids of the medium-fiber cotton plant variety 159-F

Summary 1. The qualitative and quantitative compositions of the PLs of an industrial medium-fiber cotton plant of variety 159-F (1972 and 1974 harvests) have been considered. It has been shown that the total PL amounted to 1.76 and 1.85% and consisted of 60–65% PC, 16–18% PI, 6–8% PE, and 10–14% of combined minor components, respectively.2. The distribution of the lipid phosphorus has been studied during the isolation of PLs by selective solvents. The lipid phosphorus amounted to 5.5% of the total phosphorus in the seed kernels.3. The qualitative and quantitative compositions of the fatty acids of the individual lipid fractions and of the individual PCs, PIs, and PEs have been determined. The position distribution of the fatty acids of the main groups of PLs has been established and a possible molecular composition has been given.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 198–202, March–April, 1977.     

A study of the globulins of the seeds of the cotton plant of variety 108-F and radiomutants

Chemistry of Natural Compounds -     

Minor phospholipids of the cotton plant of variety 159-F

Institute of the Chemistry of Plant Substances, Uzbek SSR Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, Vol. 6, pp. 847–848, November–December, 1989.     

A study of the structure of the dioxiane lignins of the cotton plant of variety 108-F by proton magnetic resonance

Analysis of the PMR spectra of acetylated dioxane lignins of the cotton plant collected in various vegetation periods have shown that the DLAs have different degrees of substitution of the C₃ side chain and different degrees of condensation through the aromatic nuclei. With an increase in the time of extraction of the dioxane lignins from the plant, condensation of the lignins isolated takes place. It has been shown that in the DLAs studied the amounts of -alcoholic hydroxyls are different.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 388–392, May–June, 1979.     

Glycolipids of the leaves of a cotton plant of the 175-F variety

The amounts and the quantitative and fatty acid compositions of the classes of lipids from the leaves of a healthy cotton plant of the wilt-resistant variety 175-F and of such a plant artificially infected with Verticillium dahliae have been determined. Quantitative 'changes in individual classes of lipids under the action of infection have been revealed.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, fax (3712) 89 14 75. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 801–804, November-December, 1995. Original article submitted May 22, 1995.     

The flavonols of the flowers ofGossypium hirsutum L. (cotton variety 108-F)

Summary Quercimeritrin C₂₁H₂₀O₁₂, and a new flavonol glucoside with mp 228–230° and composition C₂₁H₂₀O₁₂, which has been shown to be quercetin 3-glucoside, have been extracted from flowers of the cotton variety 108-F.Khimiya prirodnykh soedinenii, Vol. 1, No. 1, pp. 67–70, 1965     

Identification and fractionation of the total histone of the cotton plant

In order to isolate individual fractions of the histones of the cotton plant of variety 108-F and to investigate them further, the total histone has been chromatographed on Acrylex P-60 and Bio-Gel P-30. It has been shown that the most complete fractionation is achieved on a Acrylex P-60. By electrophoresis of the fractions in 15% PAAG in the presence of 6.25 M urea and on the basis of amino acid compositions, the following order of elution of the histones has been established: H1, H2B + H2A, H3, and H4. In a comparison of the amino acid composition of the H3 and H4 histones of the cotton plant with histones enriched with arginine from other species, a somewhat higher lysine : arginine ratio in these fractions has been found. On comparing the electrophoretic mobilities of the histone fractions from the cotton plant with the histones of calf thymus, some difference is observed which is apparently connected with a difference in their molecular weights.V. I. Nikitin Institute of Chemistry, Academy of Sciences of the TadzhSSR, Dushanbe. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 832–838, November–December, 1979.     

Identification and fractionation of the total histone of the cotton plant

In order to isolate individual fractions of the histones of the cotton plant of variety 108-F and to investigate them further, the total histone has been chromatographed on Acrylex P-60 and Bio-Gel P-30. It has been shown that the most complete fractionation is achieved on a Acrylex P-60. By electrophoresis of the fractions in 15% PAAG in the presence of 6.25 M urea and on the basis of amino acid compositions, the following order of elution of the histones has been established: H1, H2B + H2A, H3, and H4. In a comparison of the amino acid composition of the H3 and H4 histones of the cotton plant with histones enriched with arginine from other species, a somewhat higher lysine : arginine ratio in these fractions has been found. On comparing the electrophoretic mobilities of the histone fractions from the cotton plant with the histones of calf thymus, some difference is observed which is apparently connected with a difference in their molecular weights.     

A study of the phospholipids of the cotton plant of variety 159-F in the process of its development

The distribution of phosphorus with the secretion of phospholipids (PLs) in six stages of development of the cotton plant has been studied. It has been shown that additional extraction with methanol leads to the isolation of further PLs. Both the seeds and cotton-plant bushes during growth contain phosphatidylcholine, phosphatidylinositol, phosphatidylethanolamine, X₁, and X₂, and also unidentified PLs, one of which, Y₂, is phosphatidic acid according to qualitative reactions, chromatographic mobility, and literature information.