Development and Organization of Cell Types and Tissues

Abstract

This chapter deals with the development and organization of different cell types and tissues of plants. Development includes processes such as cell division (including cell cycle), cell enlargement, differentiation, pattern formation and morphogenesis. A detailed account on cell cycle and its hormonal and genetic control has been provided. Differentiation of cells happens by modification of cell cycle events at specific control points. The laws of governing cell division, planes of cell division and asymmetric cell division are discussed in relation to specific morphogenesis of cell and tissue types. The relative importance of cell division and cell enlargement in overall morphogenesis, organ size and organ shape is highlighted. Differentiation, dedifferentiation, redifferentiation and transdifferentiation are distinguished and their importance in cell type production is emphasized. The importance of diffusion reaction of theory and positional information theory on morphogenesis of cells, tissues, organs and organisms is explained. Finally, the differentiation of various cell types is described.