Plant Growth
Primary Wall Changes During Growth
- Growth: uptake of water in central vacuole
- Primary Walls:
- Cellulose microfibrils
- Matrix of noncellulosic polysaccharides and protein
- Minimizes extension in the direction of the long axis
- Growth favored in direction at right angles to microfibril axes orientation
- Cellulose microfibril orientation controlled by plasmalemma enzymes