References Lfy
Ausmees N., Jonsson H., Hoglund S., Ljunggren H., and Lindberg M. 1999. Structural and putative regulatory genes involved in cellulose synthesis in Rhizobium leguminosarum bv. trifolii. Microbiology 145 1253-1262. Ausmees N., Mayer R., Weinhouse H., Volman G., Amikam D., Benziman M., and Lindberg M. 2001. Genetic data indicate that proteins containing the GGDEF domain possess diguanylate cyclase activity. FEMS Microbiol Lett 204 163-167. Austin J.W., Sanders G., Kay W.W., and Collinson S.K....
Texture Of The Tunic In The Ascidians
Early descriptions of the occurrence of cellulose in the tunicates were provided by Berrill 1950 and Endean 1955a, b, 1961 . Berrill 1950 described that the tunic contains approximately 60 cellulose, 27 nitrogen-containing components and, in the fresh condition, approximately 90 water. The development of the tunic varies greatly in different groups of the tunicates. In colonial forms it may be thin and translucent, or highly colored, whereas in the Pyuridae it reaches its greatest development...
Immunogold Labeling Of Cellulosesynthesizing Terminal Complexes
TAKAO ITOH1, SATOSHI KIMURA 2, AND R. MALCOLM BROWN, JR.3 'Research Institute for Sustainable Humanosphere, Kyoto University, Uji, Kyoto 611-0011, Japan 2The University of Tokyo, Graduate School of Agriculture and Life Science, Department of Biomaterials Sciences, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan Section of Molecular Genetics and Microbiology, School of Biological Sciences, The University of Texas at Austin, Austin, TX 78712, USA Rosette TCs that are visualized exclusively by...
The Properties Of Wood
Trees are nature's largest and longest living organisms and, like all plants, cannot escape any environmental challenges. They have therefore evolved a survival strategy based on metabolic flexibility, sturdy cells and efficient transportation of metabolites between roots and leaves, which can be over 100 meters apart. The canopy of a tree carries the leaves, which are its carbohydrate factory, while the long trunk serves to hold the leaves above other plants to win the competition for light...
EVOLUTION OF THE CELLULOSE SYNTHASE CesA GENE FAMILY INSIGHTS FROM GREEN ALGAE
ALISON W. ROBERTS1 AND ERIC ROBERTS2 'Department of Biological Sciences, University of Rhode Island 2Department of Biology, Rhode Island College, Providence, RI02908-199' The structure of cellulose microfibrils has been correlated with the organization of the arrays of integral plasma membrane protein particles that synthesize them. These terminal complexes TCs are composed in part of cellulose synthase catalytic sub-units CesAs , which not only catalyze the polymerization of glucan chains, but...
Lateral transfer of cellulose synthase in the urochordates
The urochordates are unique in that they are the only animals known to produce cellulose. This ability is especially curious given their position as basal chordates. In order to explain this, one must make one of three assumptions 1 An early diverging ancestor of animals possessed the ability to produce cellulose which was subsequently lost by all animals except the urochordates 2 Cellulose biosynthesis in urochordates is the result of convergent evolution or 3 The ability to produce cellulose...
Substrate Supply For Cotton Fiber Cellulose Biogenesis
Substantial evidence implicates UDP-Glc as the immediate substrate for cellulose polymerization in vascular plants including cotton fiber Franz 1969 Carpita and Delmer 1981 . UDP-Glc was the most abundant nucleotide in the fiber and its concentration increased in parallel with stage-specific increases in the cellulose synthesis rate 0.2, 1.2, and 2.1 imol boll at 13, 17, and 21 DPA, respectively. The UDP-Glc for cellulose synthesis could be supplied by 1 sucrose synthase SuSy E.C. 2.4.1.13 Suc...
Overview
Cellulose microfibrils are remarkable in their structure, their mechanical properties, and their mechanism of synthesis. Composed of bundles of P-1,4-glucan chains, microfibrils range in diameter from about 3 nm in the primary cell walls of seed plants to 25 nm in some algae Brown, Jr. 1985 Delmer 1987 Giddings and Staehelin 1991 . Hydrogen bonding between the glucan chains that compose cellulose microfibrils results in a density-specific tensile strength exceeding that of many natural and...
Summary
Cellulose in a unit length of the stalk below the ear node in maize is the main determinant of mechanical strength, a trait of considerable importance in agriculture. The majority of cellulose in the stalk is in the vascular bundles, which occur throughout the cross-section of the stalk but are densely packed among the peripheral sclerenchymatous cell layers collectively referred to as rind. Three of the twelve maize CesA genes, ZmCesA10-12, appear to be involved in secondary wall formation and...
References
Aloni Y., Delmer D.P., and Benziman M. 1982. Achievement of high rates of in vitro synthesis of 1, 4-beta-D-glucan activation by cooperative interaction of the Acetobacter xylinum enzyme system with GTP, polyethylene glycol, and a protein factor. Proc Natl Acad Sci USA 79 21 6448-6452. Amikam D. and Benziman M. 1989. Cyclic diguanylic acid and cellulose synthesis in Agrobacterium tumefaciens. J Bacteriol 171 12 6649-6655. Amikam D. and Galperin M.Y. 2006. PilZ domain is part of the bacterial...
Occurrence Of A Cellulose Network In The Hemocoel Of Ascidians
Some ascidians possess two more cellulosic structures other than the tunic. These cellulosic structures have been observed by scanning electron microscopy after treatment with the Updegraff reagent Updegraff 1969 that removes non-cellulosic substances. One of these cellulosic structures is a cellulose network that is distributed in the hemocoel the tissue equivalent to a blood vessel of vertebrates Kimura and Itoh 1997 , and the other is a coiled cord-like structure called the tunic cord Kimura...
Introduction Lbc
Various approaches utilized for studying cellulose biosynthesis have suggested that the synthesis and structure of cellulose is characterized by diverse features among the cellulose-synthesizing organisms. To obtain a unified view of cellulose biosynthesis, it is important to review the biosynthesis of cellulose in the various cellulose-synthesizing organisms. Considerable progress has been made in the study of cellulose biosynthesis in plants and bacteria, and although it is known that a group...
The case for a cyanobacterial origin of plant cellulose synthases
Cellulose synthase amino acid sequences from various members of the Nostocales show striking similarity to plant cellulose synthase CesA and cellulose syn-thase-like protein Csl sequences Nobles et al. 2001 Nobles and Brown, Jr. 2004 . When a CesA IRX3 from A. thaliana is compared with sequences from Nostoc sp. PCC 7120 CcsA1 , DcsA the most similar nonplant eukaryotic sequence and Chloroflexus aurantiacus J-10-fl the most similar prokaryotic noncyanobacterial sequence , expectation values of...
Characterized gene clusters
Gene clusters responsible for cellulose biosynthesis have only been extensively characterized in proteobacteria. Three archetypal gene organizations encoding proteins required for the synthesis of cellulose in the a, p, and y subdivisions have been identified. It should be emphasized that variations of these archetypes exist and as such, the examples given here are meant to serve as paradigms to simplify the discussion of the general characteristics of gene clusters associated with cellulose...
Tacctgact
Figure 7-2. Structure of the cellulose biosynthesis operon bcs in Salmonella typhimurium and Escherichia coli. Arrowheads represent the open reading frames ORFs . Symbols above the ORFs show overlap of o or distance between A ORFs in bps. Symbols below the ORFs show insertions A or deletions V , which occur in S. typhimurium LT2 as compared to Escherichia coli K-12. Closed arrows just above the ORFs indicate transposon insertions in bcsA and bcsC. The larger arrow indicates the position of the...
Possible Role Of Korrigan In The Digestion Of Glucan Chains And In The Second
Most workers in the field agree that KOR probably has an indirect role in cellulose biosynthesis in vivo, but so far it has not been possible to assign a specific role to this protein in this process. In simple terms, it is believed that KOR hydrolyzes - gt Figure 10-1. Two-step assembly of the rosette terminal complex TC in plants. In the first stage, a cellulose synthase particle complex containing six cellulose synthase molecules is assembled in the ER by protein-protein interactions. Single...
Biogenesis And Function Of Cellulose In The Tunicates
'The University of Tokyo, Graduate School of Agriculture and Life Science, Department of Biomaterials Sciences, '-'-' Yayoi, Bunkyo-ku, Tokyo ''3-8657, Japan 2Research Institute for Sustainable Humanosphere, Kyoto University, UJi, Kyoto 6''-00'', Japan Tunicates are well known as the only animals to produce cellulose. The cellulose microfibrils of the tunicates are generally large in width and are highly crystalline. They are composed of almost pure monoclinic cellulose I the IP allomorph ....
Cellulosesynthesizing Terminal Complexes In The Ascidians
Studies on the biogenesis of cellulose microfibrils in the tunicates have focused mainly on the tunic of ascidians. Results from studies with various species of ascidians have suggested that the epidermal cell is the most probable site for synthesis of tunic cellulose in the majority of ascidians Millar 1951 Deck et al. 1966 Dilly 1969 Cloney and Grimm 1970 Smith 1970 Terakado 1970 Wardrop 1970 Stievenart 1971 Katow and Watanabe 1978 Torrence and Cloney 1981 Cloney and Cavey 1982 Robinson et...
References Igi
Bailey J.C., Bidigare R.R., Christensen S.J., and Andersen R.A. 1998. Phaeothamniophyceae classis nova a new lineage of chromophytes based upon photosynthetic pigments, rbcL sequence analysis and ultrastructure. Protist 149 245-263. Bricheux G., Mahoney D.G., and Gibbs S.P. 1992. Development of the pellicle and thecal plates following ecdysis in the dinoflagellate Glenodinium foliaceum. Protoplasma 168 159-171. Brown, Jr. R.M. 1985. Cellulose microfibril assembly and orientation recent...
References 1
Appenzeller L., Doblin M., Barreiro R., Wang H., Niu X., Kollipara K., Carrigan L., Tomes D., Chapman M., and Dhugga K.S. 2004. Cellulose synthesis in maize isolation and expression analysis of the cellulose synthase CesA gene family. Cellulose 11 287-299. Arioli T., Peng L., Betzner A.S., Burn J., Wittke W., Herth W., Camilleri C., H fte H., Plazinski J., Birch R., Cork A., Glover J., Redmond J., and Williamson R.E. 1998. Molecular analysis of cellulose biosynthesis in Arabidopsis. Science 279...
The Cellulose Synthase Gene Family
The CesA and Csl genes are generally expressed at a low level as judged from their occurrence in EST databases and from gene expression studies Dhugga 2001 . Yet, their transcripts can occur at higher frequencies in specific tissues, for example, GhCesAl and 2 were identified amongst late-stage cotton fiber ESTs Pear et al. 1996 and the mannan synthase gene was isolated from guar endosperm Dhugga et al. 2004 . In each case, the tissue where the ultimate product of the gene was being actively...
Chapter 5
FROM CELLULOSE TO MECHANICAL STRENGTH CARBON FLUX AND RELATIONSHIP OF THE CELLULOSE SYNTHASE GENES TO DRY MATTER ACCUMULATION IN MAIZE ROBERTO BARREIRO AND KANWARPAL S. DHUGGA Crop Genetics Research and Development Pioneer Hi-Bred International, Inc., a DuPont Company, 7300 NW 62nd Avenue, P. O. Box 1004, Johnston, IA 50131 Stalk strength in maize is primarily determined by the amount of cellulose in a unit length of the internode. An increase in cellulose concentration of the cell wall, aside...
Substrate Supply For Cellulose Synthesis And Its Stress Sensitivity In The
North Carolina State University, Department of Crop Science and Department of Plant Biology, Box 7620, 4401 Williams Hall, Raleigh, NC 27695-7620 Research on cotton fiber has figured prominently in the first steps toward understanding the metabolic control of cellulose biogenesis under normal and stressed conditions for at least two reasons. First, fiber secondary walls are composed of almost 100 cellulose that is deposited over a period of at least 20 days. Second, these extraordinary seed...
Assembly Of Cellulose Microfibrils In Dinoflagellates
Structures of cell coverings in dinoflagellate cells are unique. Motile dinoflagel-late cells possess a cell covering variously termed the theca, amphiesma or cortex Dodge and Crawford 1970 Dodge 1971 Netzel and D rr 1984 . The plasma membrane enclosing the cell is the outermost component. Beneath the plasma membrane lies a single layer of flattened vesicles termed amphiesmal vesicles, which in armored dinoflagellates enclose the thecal plates. Some gonyaulacoid and peridinioid species undergo...
D
Mannose-6-phosphate some rase EC5.3.1.8 EC2.4.1.13 UDPglucose dehydrogenase EC1.1.1.22 a,a-Trehalose-phosphate synthase EC2.4.1.15 UTP-glucose-1-phosphate uridylyltransferase EC2.7.7.9 Mannose-6-phosphate some rase EC5.3.1.8 Glucose-S-phosphate some rase EC5.3.1.9 a,a-Trehalose-phosphate synthase EC2.4.1.15 EC2.4.1.13 UDPglucose dehydrogenase EC1.1.1.22 UTP-glucose-1-phosphate uridylyltransferase EC2.7.7.9 upregulated in xylem Figure 6-5A, Figure 6-6 Djerbi et al. 2004 . Owing to their high...
Cellulose Biosynthesis In Enterobacteriaceae
Department of Microbiology, Tumor and Cell Biology MTC , Box 280, Karolinska Institutet, SE-17177 Stockholm, Sweden Distinct bacterial species belonging to the family of Enterobacteriaceae harbor a characteristic cellulose biosynthesis operon bcs . A regulatory network for cellulose biosynthesis has been identified in Salmonella typhimurium. Transcription of the bcs operon is constitutive, while cellulose biosynthesis is activated on the post-transcriptional level by AdrA, a GGDEF domain...
Irregular Xylems Irxs
R.M. Brown, Jr. and I.M. Saxena eds. , Cellulose Molecular and Structural Biology, 49-61. 2007 Springer. Cellulose is an essential component of the plant primary cell wall, where it is considered a vital component of the load bearing network and an important determinant of the orientation of cell expansion. After a period of expansion some cell types lay down a thick secondary cell wall inside the primary wall. Cellulose is often the most abundant component of these plant secondary cell walls...
Info Boc
Protein sequence based on intron exon modeling performed by Todd Richmond http cellwall. stanford.edu php structure.php . Black boxes putative transmembrane domains White boxes conserved 'U' domains Grey boxes hydrophobic regions manually. Transmembrane domains predicted with HmmTop v2.0 Tusnady and Simon 2001 . isoelectric point predicted by ProtParam dExpressed sequence tags reported by TAIR on July 1, 2003 http www.Arabidopsis.org . eAn embryo lethal mutation Goubet et al. 2003 . frat refers...
Evolution of tracheary elements
The origin of tracheary elements with thick secondary cell walls was a key event in land plant evolution and a defining feature of the vascular plant lineage Graham et al. 2000 . However, much remains unknown about the evolution of tracheary elements and the process of secondary cell wall deposition. Although conducting cells known as hydroids occur in sporophytes and gametophytes of many species of mosses and liverworts, these tissues are structurally diverse and provide little insight into...
CesA and CslD genes of the moss Physcomitrella patens
Characterization of CesA gene superfamilies in nonvascular plants is one approach to revealing the relationship between CesA diversification and origin of vascular tissue. These studies are greatly facilitated by the development of genomic resources for model organisms Pryer et al. 2002 . The moss P. patens is a useful model for investigating plant gene function due to its unusually high rate of homologous recombination, which enables targeted mutagenesis Schaefer 2002 Hohe et al. 2004 Schaefer...