期刊
FRONTIERS IN PLANT SCIENCE
卷 6, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fpls.2015.00288
关键词
land plant evolution; MYB transcription factor; NAC transcription factor; secondary cell wall; network
资金
- MEXT NCCARP project
- Nara Institute of Science and Technology
- Naito Foundation Subsidy for Female Researchers after Maternity Leave
- Sumitomo Foundation for Grant for Basic Science Research Projects
- Japan Society for the Promotion of Science [24770052, 25114520, 25840098]
- Grants-in-Aid for Scientific Research [25840098, 25114520, 15K07094, 24770052, 15H01235] Funding Source: KAKEN
Plant cells biosynthesize primary cell walls (PCW) in all cells and produce secondary cell walls (SCWs) in specific cell types that conduct water and/or provide mechanical support, such as xylem vessels and fibers. The characteristic mechanical stiffness, chemical recalcitrance, and hydrophobic nature of SCWs result from the organization of SCW-specific biopolymers, i.e., highly ordered cellulose, hemicellulose, and lignin. Synthesis of these SCW-specific biopolymers requires SCW-specific enzymes that are regulated by SCW-specific transcription factors. In this review, we summarize our current knowledge of the transcriptional regulation of SCW formation in plant cells. Advances in research on SCW biosynthesis during the past decade have expanded our understanding of the transcriptional regulation of SCW formation, particularly the functions of the NAG and MYB transcription factors. Focusing on the NAG-MYB-based transcriptional network, we discuss the regulatory systems that evolved in land plants to modify the cell wall to serve as a key component of structures that conduct water and provide mechanical support.
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