Oxidation of coniferyl alcohol by cell wall peroxidases at the expense of indole‐3‐acetic acid and O2

FEBS Letters

Muñoz, Romualdo¹  Barceló, A.Ros¹  Pedreño, María A.¹  Ferrer, María A.¹ 

[1] Department of Plant Biology (Plant Physiology), University of Murcia, E-30071 Murcia, Spain

关键词: Cell wall peroxidase;    Coniferyl alcohol;    Indole-3-acetic acid;    Genistein;    Lignification;    Lupinus albus;    CA;    coniferyl alcohol;    2;    4-DCP;    2;    4-dichlorophenol;    IAA;    indole-3-acetic acid;   

DOI  :  10.1016/0014-5793(90)80524-M

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

The oxidation of coniferyl alcohol (CA), a lignin precursor, by cell wall peroxidases may take place at the expense of indole-3-acetic acid (IAA) and O₂, and in the absence of H₂O₂. The peroxidase-catalyzed oxidation of CA shows an optimum at an IAA concentration of 0.33 mM, while higher IAA concentrations are inhibitory. The observation that the oxidation of CA by cell wall peroxidase at the expense of IAA and O₂ is inhibited by genistein, a putative endogenous inhibitor of lignification in lupin hypocotyls, supports the view that the H₂O₂-generating system coexists with cell wall peroxidase activities involved in lignification, and that it takes place at the expense of IAA and O₂.

【 授权许可】

Unknown