Regulation of seed coat mucilage production and modification in Arabidopsis

被引:6
作者
Xu, Yan [1 ,2 ,3 ]
Hu, Ruibo [1 ,2 ,3 ]
Li, Shengjun [1 ,2 ,3 ]
机构
[1] Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, CAS Key Lab Biofuels, Shandong Prov Key Lab Energy Genet, Qingdao 266101, Peoples R China
[2] Shandong Energy Inst, Qingdao 266101, Peoples R China
[3] Qingdao New Energy Shandong Lab, Qingdao 266101, Peoples R China
基金
中国国家自然科学基金;
关键词
Seed coat; Mucilage; Transcriptional regulation; Arabidopsis; CELL-WALL POLYSACCHARIDES; CELLULOSE SYNTHASE 5; E3 UBIQUITIN LIGASE; TRANSCRIPTION FACTORS; PECTIN METHYLESTERIFICATION; RHAMNOGALACTURONAN-I; ADHERENT MUCILAGE; SECRETORY-CELLS; LEUNIG-HOMOLOG; NEGEV DESERT;
D O I
10.1016/j.plantsci.2023.111591
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The Arabidopsis seed coat mucilage is a polysaccharide-rich matrix synthesized by the seed coat epidermal cells. It is a specialized cell wall mainly composed of three types of polysaccharides (i. e. pectin, hemicellulose, and cellulose), and represents as an ideal model system for plant cell wall research. A large number of genes responsible for the synthesis and modification of cell wall polysaccharides have been identified using this model system. Moreover, a subset of regulators controlling mucilage production and modification have been charac-terized, and the underlying transcriptional regulatory mechanisms have been elucidated. This substantially contributes to the understanding of the molecular mechanisms underlying mucilage synthesis and modification. In this review, we concisely summarize the various genes and regulators involved in seed coat cell differentiation, mucilage biosynthesis and modification, and secondary cell wall formation. In particular, we put emphasis on the latest knowledge gained regarding the transcriptional regulation of mucilage production, which is composed of a hierarchal cascade with three-layer transcriptional regulators. Collectively, we propose an updated schematic framework of the genetic regulatory network controlling mucilage production and modification in the Arabi-dopsis mucilage secretory cells.
引用
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页数:10
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