Acta Agriculturae Zhejiangensis ›› 2024, Vol. 36 ›› Issue (10): 2402-2415.DOI: 10.3969/j.issn.1004-1524.20231227

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Research progress on the structure and assembly of plant supramolecular cellulose synthase complexes

REN Shitan1,2(), ZHENG Lin2, JIANG Tingbo1, ZHOU Boru1,*(), WANG Hongzhi2,*()   

  1. 1. College of Forestry, Northeast Forestry University, Harbin 150040, China
    2. Institute of Biotechnology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China).
  • Received:2023-10-31 Online:2024-10-25 Published:2024-10-30

Abstract:

Cellulose is the main component of plant cell wall and the most abundant renewable resource in nature. Plant cellulose is composed of β-1,4-glucan chains, and its synthesis is catalyzed by the cellulose synthase complex (CSC) located on the plasma membrane. In this paper, the latest research findings on the structure and assembly of plant CSC were analyzed from the perspectives of biochemistry, genetics and evolution, these included examining the protein structure characteristics and biological functions of cellulose synthase (CesA) subunits, the mechanism by which CesAs assembly into CSC rosettes core complex, and the relationship between CSC structure and cellulose properties. The roles of auxiliary proteins such as cytoskeleton and post-translational modification of proteins in the assembly of supramolecular CSC and the regulation of cellulose synthesis was further explored. This paper prospected the use of single base editing technology to mutate key amino acid sites in domains such as plant-conserved region (PCR), N-terminal domain (NTD) or transmembrane domain (TM). By regulating the stability and function of CSC, it is expected to cultivate new plants with increased biomass, enhanced stress resistance and suitable for specific industrial applications, which provides a novel strategy for genetic improvement of plant cellulose genetic engineering.

Key words: cellulose synthase (CesA), cellulose synthase complex (CSC), CSC structure, CSC assembly, cellulose

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