Behind the Scenes: The Impact of Bioactive Phenylpropanoids on the Growth Phenotypes of Arabidopsis Lignin Mutants

Frontiers in Plant Science

Ilias El Houari²  Wout Boerjan²  Bartel Vanholme² 

[1] Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium;VIB Center for Plant Systems Biology, Ghent, Belgium;

关键词: salicylic acid;    cinnamic acid;    flavonoids;    ferulic acid;    DCG;    CINNAMATE-4-HYDROXYLASE;   

DOI  :  10.3389/fpls.2021.734070

来源: DOAJ

【 摘 要 】

The phenylpropanoid pathway converts the aromatic amino acid phenylalanine into a wide range of secondary metabolites. Most of the carbon entering the pathway incorporates into the building blocks of lignin, an aromatic polymer providing mechanical strength to plants. Several intermediates in the phenylpropanoid pathway serve as precursors for distinct classes of metabolites that branch out from the core pathway. Untangling this metabolic network in Arabidopsis was largely done using phenylpropanoid pathway mutants, all with different degrees of lignin depletion and associated growth defects. The phenotypic defects of some phenylpropanoid pathway mutants have been attributed to differentially accumulating phenylpropanoids or phenylpropanoid-derived compounds. In this perspectives article, we summarize and discuss the reports describing an altered accumulation of these bioactive molecules as the causal factor for the phenotypes of lignin mutants in Arabidopsis.

【 授权许可】

Unknown