細胞壁の構築・維持と膜交通システム(<特集>情報処理システムとしての植物細胞壁)

抄録

The cell wall is a characteristic component of plant cells, whose structure and composition vary depending on the cell type, developmental stage, and environmental condition. For construction and proper modulation of the cell wall, a vast number of proteins and polysaccharides should be transported to the plasma membrane and/or the extracellular space correctly. The delivery of these materials depends on the membrane trafficking system, a key mechanism of intracellular transport connecting single-membrane bounded organelles and the extracellular space. Although molecular mechanisms of membrane trafficking are largely conserved in eukaryotic lineages, plants could have developed unique trafficking mechanisms to construct the cell wall and maintain its integrity, given the plant-specific nature of the cell wall. In this review, we summarize recent progress in the field of membrane trafficking in plant cells, especially focusing on the cell wall.