Author:
Baziramakenga Régis,Leroux Gilles D.,Simard Régis R.,Nadeau Paul
Abstract
Experiments were carried out, in a controlled environment during a 4-h incubation period, to examine the effects of phenolic acids on uptake by soybean (Glycine max (L.) Merr cv. Maple Bell) roots of phosphate and methionine and their incorporation into nucleic acids and proteins, respectively. Benzoic, p-hydroxy benzoic, vanillic, cinnamic, p-coumaric, and ferulic acids were used in the study. Nucleic acid and protein synthesis were assayed by the incorporation of 32P and 35S-methionine into soybean root. The uptake of 32P was reduced by benzoic, cinnamic, vanillic, and ferulic acids, while p-hydroxybenzoic and p-coumaric acids increased slightly its absorption. At 250 μM, all allelochemicals tested reduced the incorporation of 32P into DNA and RNA. Benzoic, cinnamic, ferulic, and vanillic acids reduced the uptake of 32S-methionine, whereas p-hydroxybenzoic and p-coumaric acids increased its uptake. The methionine incorporation into proteins was reduced by all phenolic acids, except for p-coumaric acid and vanillic acid at 125 μM. These results suggest that interference with nucleic acid and protein metabolism by the phenolic acids is one of the main mechanisms by which they influence plant growth. Key words: Allelochemicals, mechanism of action, phenolic acids, phosphorus, proteins, methionine, ion uptake.
Publisher
Canadian Science Publishing
Cited by
55 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献