Open AccessUptake and Metabolism of Vitamins E and K by Pea Stem Sections
Author(s) -
J. K. Gaunt,
Bruce B. Stowe
Publication year - 1967
Publication title -
plant physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.554
H-Index - 312
eISSN - 1532-2548
pISSN - 0032-0889
DOI - 10.1104/pp.42.6.859
Subject(s) - catabolism , tocopherol , vitamin e , metabolism , biochemistry , enzyme , chemistry , vitamin , biology , antioxidant
The uptake of alpha-tocopherol and vitamin K(1) by pea stem sections is described. Vitamin K(1) appears to be stable within the plant tissue and is found distributed in all particulate cell fractions following uptake. Only a small proportion of the tocopherol taken up is recoverable and the majority of the compound appears to undergo catabolism.The oxidation of tocopherols by a cell-free system is described. This system requires oxygen and appears to involve enzyme activity but does not appear to be linked with the action of lipoxidase.