INRA, Institut Jean-Pierre Bourgin, UMR 1318, ERL CNRS 3559, Saclay Plant Sciences, RD10, F-78026 Versailles, France; AgroParisTech, Institut Jean-Pierre Bourgin, UMR 1318, ERL CNRS 3559, Saclay Plant Sciences, RD10, F-78026 Versailles, France.
INRA, Institut Jean-Pierre Bourgin, UMR 1318, ERL CNRS 3559, Saclay Plant Sciences, RD10, F-78026 Versailles, France; AgroParisTech, Institut Jean-Pierre Bourgin, UMR 1318, ERL CNRS 3559, Saclay Plant Sciences, RD10, F-78026 Versailles, France.
Curr Opin Plant Biol. 2015 Feb;23:83-90. doi: 10.1016/j.pbi.2014.11.006. Epub 2014 Nov 25.
Lignins are cell wall phenolic polymers resulting from monolignol radical coupling. They have characteristically high diversity in their structures which is a direct consequence of the versatile character of the lignification mechanisms discussed in this review. We will relate the latest discoveries regarding the main participants involved in lignin deposition in various tissues. Lignification is often described as a cell autonomous event occurring progressively in all cell wall layers during lignifying cell life and stopping with the cell death. However, recent data combined to old data from studies of tree lignification and zinnia cultures challenged these entrenched views and showed that the lignification process is cell-type dependent and can involve neighboring cells. Therefore, we consider recent data on cell-autonomous and non-cell autonomous lignification processes. We conclude that the role of lignins still need to be assessed during plant development and that control of polymerization/lignin deposition remains elusive and need to be investigated.
木质素是由酚基单体自由基聚合而成的细胞壁酚类聚合物。它们在结构上具有显著的多样性，这是由于木质化机制的多功能性所致，本文将对此进行讨论。我们将介绍最新发现的参与各种组织中木质素沉积的主要参与者。木质化通常被描述为一个细胞自主事件，在木质化细胞的生命过程中逐渐发生在所有细胞壁层中，并随着细胞死亡而停止。然而，最近的数据与来自树木木质化和百日草培养物的旧数据相结合，挑战了这些根深蒂固的观点，并表明木质化过程依赖于细胞类型，并可能涉及相邻细胞。因此，我们考虑了最近关于细胞自主和非细胞自主木质化过程的研究数据。我们得出的结论是，木质素的作用在植物发育过程中仍需要进行评估，而聚合/木质素沉积的控制仍然难以捉摸，需要进一步研究。
