Rogers Louisa A, Campbell Malcolm M
Department of Plant Sciences, University of Oxford, South Parks Road, Oxford OX1 3RB, UK.
Present address: CAB International Publishing, Wallingford OX10 8DE, UK.
New Phytol. 2004 Oct;164(1):17-30. doi: 10.1111/j.1469-8137.2004.01143.x.
Lignins are complex, three-dimensional polymers embedded in the cell walls of specialised plant cells, where they play important roles in plant growth and development. Plants must possess mechanisms to coordinate lignin deposition so that its synthesis occurs at the appropriate time and place, in response to endogenous and exogenous cues. Here we consider the genetic basis of the control of lignin deposition. We focus on the transcriptional regulation of lignification, considering how the genes encoding the lignin biosynthetic pathway might be co-ordinately controlled, and the transcription factors that are likely to be involved. We also discuss the mechanisms regulating lignification that have been revealed by mutants with altered lignin deposition. We conclude that, while transcriptional regulation is a common feature in the control of lignification, there are many different regulators that may bring about this common mode of regulation. Contents Summary 17 I. Introduction 17 II. Transcriptional regulation of genes encoding lignin biosynthetic enzymes 19 III. Co-ordinate regulation of genes encoding lignin biosynthetic enzymes 21 IV. Mutants with altered spatial and temporal control of lignification 23 V. Conclusion 28 Acknowledgements 28 References 28.
木质素是嵌入特定植物细胞细胞壁中的复杂三维聚合物，在植物生长和发育中发挥重要作用。植物必须具备协调木质素沉积的机制，以便其合成能根据内源性和外源性信号在适当的时间和地点发生。在此，我们探讨控制木质素沉积的遗传基础。我们聚焦于木质化的转录调控，思考编码木质素生物合成途径的基因如何被协同控制，以及可能涉及的转录因子。我们还讨论了因木质素沉积改变的突变体所揭示的调控木质化的机制。我们得出结论，虽然转录调控是木质化控制中的一个共同特征，但有许多不同的调节因子可能导致这种共同的调控模式。内容摘要17 一、引言17 二、编码木质素生物合成酶的基因的转录调控19 三、编码木质素生物合成酶的基因的协同调控21 四、木质化时空控制改变的突变体23 五、结论28 致谢28 参考文献28 。
