[Advances in plant caffeic acid-O-methyltransferase]

Area of Science:

• Plant biochemistry
• Enzymology
• Molecular biology

Background:

• Monolignin alcohols (H, G, S) define lignin/lignan diversity and bioactivity.
• Caffeic acid O-methyltransferase (COMT) is a key enzyme in monolignin alcohol biosynthesis.
• Previous reviews focused on COMT gene characteristics and lignin regulation.

Purpose of the Study:

• To summarize recent research on COMT over the past decade.
• To update knowledge on COMT's gene, expression, and structural characteristics.
• To explore COMT's regulatory effects and future applications.

Main Methods:

• Literature review of recent studies on COMT.
• Analysis of COMT gene, expression, and structural data.
• Synthesis of COMT's role in lignin and lignan biosynthesis.

Main Results:

• COMT's critical role in determining monolignin alcohol composition is confirmed.
• Recent studies have elucidated COMT's detailed gene, expression, and structural features.
• COMT's regulatory mechanisms and potential applications have been further clarified.

Conclusions:

• COMT remains a central enzyme in lignin and lignan biosynthesis.
• Continued research on COMT offers prospects for novel applications.
• This review provides a comprehensive update on COMT research progress.