National Engineering Research Center of Tree Breeding and Ecological Restoration, College of Biological Sciences and Biotechnology, Beijing Forestry University, No. 35, Tsing Hua East Road, Haidian District, Beijing 100083, China.
Analytical and Testing Center, Beijing Forestry University, No. 35, Tsing Hua East Road, Haidian District, Beijing 100083, China.
Int J Mol Sci. 2022 Sep 4;23(17):10134. doi: 10.3390/ijms231710134.
Xylem, as a unique organizational structure of vascular plants, bears water transport and supports functions necessary for plant survival. Notably, secondary xylem in the stem (i.e., wood) also has important economic and ecological value. In view of this, the regulation of xylem development has been widely concerned. In recent years, studies on model plants and poplar have shown that transcription factors play important regulatory roles in various processes of xylem development, including the directional differentiation of procambium and cambium into xylem, xylem arrangement patterns, secondary cell wall formation and programmed cell death. This review focuses on the regulatory roles of widely and thoroughly studied , and transcription factor gene families in xylem development, and it also pays attention to the regulation of their upstream microRNAs. In addition, the existing questions in the research and future research directions are prospected.
木质部作为维管植物特有的组织结构，具有运输水分和支持植物生存所必需的功能。值得注意的是，茎中的次生木质部（即木材）也具有重要的经济和生态价值。鉴于此，木质部发育的调控受到了广泛关注。近年来，对模式植物和杨树的研究表明，转录因子在木质部发育的各个过程中发挥着重要的调控作用，包括原形成层和形成层定向分化为木质部、木质部排列模式、次生细胞壁形成和程序性细胞死亡。本综述重点介绍了广泛而深入研究的 、 和 转录因子基因家族在木质部发育中的调控作用，并关注了它们上游 microRNAs 的调控。此外，还展望了研究中存在的问题和未来的研究方向。
