Edited by Candace H. Haigler, Texas Tech University Lubbock, Texas. Paul J. Weimer, E. I. du Pont de Nemours & Company, Incorporated Wilmington, Delaware.

• Preface Part 1: Biosynthesis 1 Occurrence and Functions of Native Cellulose 2 Relationship of Cellulose and Other Cell Wall Components: Supramolecular Organization 3 Role of Linear Terminal Complexes in Cellulose Synthesis 4 Role of Particle Rosettes and Terminal Globules in Cellulose Synthesis 5 Relationship Between Polymerization and Crystallization in Microfibril Biogenesis 6 Physical Structure of Cellulose Microfibrils: Implications for Biogenesis 7 Role of the Cytoskeletal Elements in Organized Wall Microfibril Deposition 8 Site of Cellulose Synthesis 9 Biochemistry and Regulation of Cellulose Synthesis in Higher Plants 10 Molecular Approaches for Probing the Structure and Function of Callose and Cellulose Synthases 11 Biochemistry of Cellulose Synthesis in Acetobacter xylinum 12 Cloning of Genes Involved in Cellulose Biosynthesis in Acetobacter xylinum Part II: Biodegradation 13 Quantitative and Semiquantitative Measurements of Cellulose Biodegradation 14 Structural Features of Cellulose and Cellulose Derivatives, and Their Effects on Enzymatic Hydrolysis 15 Role of Microbial Cellulose Degradation in Reptile Nutrition 16 Cellulose Degradation in Ruminants 17 Cellulose Degradation by Mesophilic Anaerobic Bacteria 18 Cellulose Degradation by Thermophilic Anaerobic Bacteria 19 Cellulose Degradation by Mesophilic Aerobic Bacteria 20 Cellulose Degradation by Thermophilic Aerobic Bacteria 21 Fungal Cellulases 22 Bacterial Cellulases 23 Plant Cellulases and Their Role in Plant Development 24 Molecular Cloning of Cellulase Genes into Non[1]cellulolytic Microorganisms