Department of Biochemistry and the Purdue Center for Plant Biology, Purdue University, West Lafayette, IN 47907, United States.
Department of Biochemistry and the Purdue Center for Plant Biology, Purdue University, West Lafayette, IN 47907, United States.
Curr Opin Biotechnol. 2019 Apr;56:202-208. doi: 10.1016/j.copbio.2018.12.008. Epub 2019 Jan 21.
Lignin, a polymer found in the plant secondary cell wall, is a major contributor to biomass' recalcitrance toward saccharification. Because of this negative impact toward the value of lignocellulosic crops, there is a special interest in modifying the content and composition of this important plant biopolymer. For many years this endeavor has been hindered by the plant growth inhibition that is often associated with manipulations to phenylpropanoid metabolism. Although the actual mechanism by which dwarfism arises remains unknown, recent advances in tissue-specific lignin complementation and better understanding of phenylpropanoid transcriptional regulation has made it possible to disentangle lignin modification from perturbations in plant development.
木质素是植物次生细胞壁中的一种聚合物，是生物质对糖化产生抗性的主要原因。由于木质纤维素作物的这种负面影响，人们对改变这种重要植物生物聚合物的含量和组成特别感兴趣。多年来，由于操纵苯丙烷代谢往往与植物生长抑制有关，因此这项工作受到了阻碍。虽然矮小症产生的实际机制尚不清楚，但组织特异性木质素互补的最新进展和对苯丙烷类转录调控的更好理解，使得从植物发育的干扰中分离出木质素修饰成为可能。
