Interactions of Phenolic Acids, Metallic Ions and Chelating Agents on Auxin-Induced Growth
AUTOR(ES)
Tomaszewski, Miroslaw
RESUMO
By growth experiments in indoleacetic acid-1-14C (IAA), and determination of the 14CO2 evolved, it has been shown directly that polyphenols synergize IAA-induced growth by counteracting IAA decarboxylation. Sinapic and ferulic acids act like polyphenols. Endogenous polyphenols doubtless exert the same influence in intact plants. Monophenols stimulate the decarboxylation of IAA under conditions where they depress growth. When Mn++ is present as well, this effect is enhanced. All these growth effects are paralleled by effects on the isolated IAA oxidizing enzyme of Avena.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=550552Documentos Relacionados
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