TAILIEUCHUNG - Plant Cell Wall Polymers: Function, Structure and Biological Activity of Their Derivatives

Plant cell walls represent the most abundant renewable resource on this planet. They are rich in mixed complex and simple biopolymers, which has opened the door to the development of wide applications in different technologic fields. | Chapter 4 Plant Cell Wall Polymers Function Structure and Biological Activity of Their Derivatives Marisol Ochoa-Villarreal Emmanuel Aispuro-Hernandez Irasema Vargas-Arispuro and Miguel Ángel Martínez-Téllez Additional information is available at the end of the chapter http 46094 1. Introduction Plant cell walls represent the most abundant renewable resource on this planet. They are rich in mixed complex and simple biopolymers which has opened the door to the development of wide applications in different technologic fields. In this regard the polymerization processes that allow the synthesis of the cell wall and their components in living models are relevant as well as the properties of the polymers and their derivatives. Therefore this chapter outlines the basis of polymerization with a biological approach in the plant cell wall highlighting the biological effects of plant cell wall derivatives and their current applications. Plant cell wall is a dynamic network highly organized which changes throughout the life of the cell. The new primary cell wall is born in the cell during cell division and rapidly increases in surface area during cell expansion. The middle lamella forms the interface between the primary walls of neighboring cells. Finally at differentiation many cells elaborate with the primary wall a secondary cell wall building a complex structure uniquely suited to the function of the cell. The functions of the plant cell wall may be grouped by its contribution to the structural integrity supporting the cell membrane sense extracellular information and mediate signaling processes 1 . The main components of the plant cell wall involve different polymers including polysaccharides proteins aromatic substances and also water and ions. Particularly the different biomechanical properties of the plant cell wall are mainly defined by the content of the polymers cellulose hemicelulloses and pectins and their interactions 2 . The rapid progress on

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