STUDIES OF LIGNIN BIOSYNTHESIS USING ISOTOPIC CARBON: XII. THE BIOSYNTHESIS AND METABOLISM OF SINAPIC ACID
- 1 March 1963
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Biochemistry and Physiology
- Vol. 41 (3) , 613-620
- https://doi.org/10.1139/o63-073
Abstract
Sinapic acid-2-C14 is converted by 25-day-old wheat plants to sinapyl lignin 6 times as efficiently as to coniferyl lignin. This factor rises to 16 in heading wheat, indicating lessened ability to demethoxylate the sinapyl nucleus with increasing age. Feeding experiments with 3-(3,4-dihydroxy-5-methoxyphenyl)-acrylic acid (5-hydroxyferulic acid) provided evidence for the participation of this compound in the conversion of ferulic to sinapic acid. In plants at an early stage of lignification 5-hydroxyferulic acid was dehydroxylated to ferulic acid and was converted to coniferyl lignin, but evidence about the conversion of 5-hydroxyferulic acid to coniferyl lignin in more mature plants was conflicting. Demethylation of sinapic to 5-hydroxyferulic acid was demonstrated by means of a trapping experiment. Ferulic acid-2-C14 is reduced to coniferyl aldehyde and coniferyl alcohol in heading wheat plants and cambial tissue cultures of Pinus strobus.Keywords
This publication has 13 references indexed in Scilit:
- STUDIES OF LIGNIN BIOSYNTHESIS USING ISOTOPIC CARBON .10. FORMATION OF LIGNIN FROM PHENYLPROPANOIDS IN TISSUE CULTURE OF WHITE PINES1962
- Tropolones: a unique class of potent non-competitive inhibitors of S-adenosylmethionine-cathechol methyltransferaseBiochimica et Biophysica Acta, 1961
- METABOLISM OF AROMATIC COMPOUNDS IN HIGHER PLANTS .4. PURIFICATION AND PROPERTIES OF PHENYLALANINE DEAMINASE OF HORDEUM VULGARE1961
- THE POLYOXYPHENOLS OF WESTERN RED CEDAR (THUJA PLICATA DONN). II. DEGRADATION STUDIES ON PLICATIC ACID, A POSSIBLE LIGNAN ACIDCanadian Journal of Chemistry, 1960
- Studies of Lignin Biosynthesis Using Isotopic Carbon. VIII. Isolation of Radioactive Hydrogenolysis Products of Lignin1Journal of the American Chemical Society, 1959
- METABOLISM OF PHENYLPROPANOID COMPOUNDS IN SALVIA: II. BIOSYNTHESIS OF PHENOLIC CINNAMIC ACIDSCanadian Journal of Biochemistry and Physiology, 1959
- STUDIES OF LIGNIN BIOSYNTHESIS USING ISOTOPIC CARBON .7. THE ROLE OF PARA-HYDROXYPHENYLPYRUVIC ACID1959
- STUDIES OF LIGNIN BIOSYNTHESIS USING ISOTOPIC CARBON: VII. THE ROLE OFp-HYDROXYPHENYLPYRUVIC ACIDCanadian Journal of Biochemistry and Physiology, 1959
- STUDIES OF LIGNIN BIOSYNTHESIS USING ISOTOPIG CARBON: V. COMPARATIVE STUDIES ON DIFFERENT PLANT SPECIESCanadian Journal of Biochemistry and Physiology, 1956
- STUDIES OF LIGNIN BIOSYNTHESIS USING ISOTOPIC CARBON: IV. FORMATION FROM SOME AROMATIC MONOMERSCanadian Journal of Biochemistry and Physiology, 1955