Cellulose: Molecular Mechanisms Controlling Biosynthesis and Orientation

The micro fibril angle of the cellulose chains in individual cells is now viewed as one of the determinants of stiffness in wood. High micro fibril angles result in low stiffness and increased longitudinal shrinkage. Both of these properties are relevant for fast-grown plantation softwoods, where higher stiffness and reduced shrinkage are desired outcomes. The purpose of this research is to investigate the fundamental molecular mechanisms controlling cellulose synthesis and orientation in secondary walls and to develop and test genetic strategies for identifying and creating trees with increased stem growth rates, higher cellulose contents, and lower micro fibril angles.