原形質連絡による細胞間輸送と植物ホルモンの関係性

抄録

Plant hormones are functioning in various phenomena, such as plant growth, development, and stress response. Sometimes plant hormones act where they are synthesized, and sometimes they are transported to act after synthesis. Transport through vascular is known as long-distance transport, while apoplastic transport, transport through influx/efflux carrier proteins, and transport through plasmodesmata (PD), is known as local transport. Recent papers report that plant hormone transport through PD plays an important role in several plant development. PD are plant-specific structures and are tubular with a diameter of 30–50 nm, traverse the cell wall, and connects the cytoplasms of adjacent cells. The transcription factors, mRNA, and ions are transported in lateral or longitudinal direction through PD. 27–81 kDa molecules are transported through PD. Therefore, plant hormones that are small molecules are also thought to be distributed through PD, indicating the importance. Thus, in this review, the recent studies on the relationship between transport through PD and plant hormones are introduced, and the issues and prospects of the study of plant hormone transport are described.