Plant Biology Division, Samuel Roberts Noble Foundation, 2510 Sam Noble Parkway, Ardmore, OK 73401, USA.
Trends Plant Sci. 2011 Apr;16(4):227-33. doi: 10.1016/j.tplants.2010.12.005. Epub 2011 Jan 10.
Lignin is an aromatic heteropolymer and the second most abundant plant biopolymer after cellulose. It is deposited mostly in the secondary cell walls of vascular plants and is essential for water transport, mechanical support and for plant pathogen defense. Lignin biosynthesis is a highly energy-consuming and irreversible process that responds to many developmental and environmental cues, including light, sugar content, circadian clock, plant hormones and wounding. During the past decade, many transcription factors involved in lignin biosynthesis have been identified and characterized. In this review, we assess how these transcriptional activators and repressors modulate lignin biosynthesis, and discuss crosstalk between the lignin biosynthesis pathway and other physiological processes.
木质素是一种芳香杂聚物，是仅次于纤维素的第二大丰富的植物生物聚合物。它主要沉积在维管植物的次生细胞壁中，对于水的运输、机械支撑和植物病原体防御至关重要。木质素的生物合成是一个高度耗能和不可逆的过程，它对许多发育和环境线索做出反应，包括光、糖含量、昼夜节律、植物激素和创伤。在过去的十年中，已经鉴定和描述了许多参与木质素生物合成的转录因子。在这篇综述中，我们评估了这些转录激活因子和阻遏物如何调节木质素的生物合成，并讨论了木质素生物合成途径与其他生理过程之间的串扰。
