Main research interest of our team is to understand how plants get a shape. Cell morphogenesis is a complex process regulated on RNA, DNA and also protein level. The final form of a cell or an organ is the result of two processes - oriented cell division and differential cell growth. Polarized secretion, exocytosis, is a crucial tool for oriented cell division as well differential cell growth. Nevertheless, vesicular secretion goes side by side with intense membrane recycling, therefore we aim to explain functions of proteins, lipids, or mechanisms involved in vesicular secretion in the context of the whole endomembrane system.