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Pectins: structure, biosynthesis, and oligogalacturonide-related signaling.
The view of critical questions regarding pectin structure, biosynthesis, and function that need to be addressed in the coming decade are presented and new methods that may be useful to study localized pectins in the plant cell wall are described. Expand
Arabidopsis irregular xylem8 and irregular xylem9: Implications for the Complexity of Glucuronoxylan Biosynthesis[W]
The results suggest that IRX9 is required for normal GX elongation and indicate roles for IRX8 and FRA8 in the synthesis of the glycosyl sequence at the GX reducing end. Expand
Rhamnogalacturonan II: structure and function of a borate cross-linked cell wall pectic polysaccharide.
- M. O’Neill, T. Ishii, P. Albersheim, A. Darvill
- Chemistry, Medicine
- Annual review of plant biology
- 29 April 2004
The demonstration that RG-II exists in primary walls as a dimer that is covalently cross-linked by a borate diester was a major advance in the understanding of the structure and function of this pectic polysaccharide. Expand
Requirement of Borate Cross-Linking of Cell Wall Rhamnogalacturonan II for Arabidopsis Growth
The reduced cross-linking of RG-II in dwarf mur1 plants indicates that plant growth depends on wall pectic polysaccharide organization. Expand
Rhamnogalacturonan-II, a Pectic Polysaccharide in the Walls of Growing Plant Cell, Forms a Dimer That Is Covalently Cross-linked by a Borate Ester
- M. O’Neill, D. Warrenfeltz, +4 authors P. Albersheim
- Chemistry, Medicine
- The Journal of Biological Chemistry
- 13 September 1996
The data suggest that the borate ester is located on C-2 and C-3 of two of the four 3′-linked apiosyl residues of dimeric RG-II, indicating that this plant cell wall pectic polysaccharide is covalently cross-linked. Expand
The irregular xylem9 mutant is deficient in xylan xylosyltransferase activity.
- Chanhui Lee, M. O’Neill, Y. Tsumuraya, A. Darvill, Z. Ye
- Biology, Medicine
- Plant & cell physiology
- 1 November 2007
It is shown that microsomes isolated from the stems of wild-type Arabidopsis exhibit XylT and GlcAT activities in the presence of exogenous 1,4-linked beta-d-xylooligomers. Expand
Occurrence of the Primary Cell Wall Polysaccharide Rhamnogalacturonan II in Pteridophytes, Lycophytes, and Bryophytes. Implications for the Evolution of Vascular Plants1
The data indicate that the amount of RG-II incorporated into the walls of plants increased during the evolution of vascular plants from their bryophyte-like ancestors, suggesting the acquisition of a boron-dependent growth habit may be correlated with the ability of vascular Plants to maintain upright growth and to form lignified secondary walls. Expand
Moss and liverwort xyloglucans contain galacturonic acid and are structurally distinct from the xyloglucans synthesized by hornworts and vascular plants.
The results increase the understanding of the evolution, diversity, and function of structural motifs in land-plant xyloglucans and provide support to the proposal that hornworts are sisters to the vascular plants. Expand
Plant nucleotide sugar formation, interconversion, and salvage by sugar recycling.
The importance of the salvage of sugars released from glycans for the formation of nucleotide sugars is emphasized and how recent studies combining biochemical, genetic, molecular and cellular approaches have led to an increased appreciation of the role nucleotide sugar in all aspects of plant growth and development is outlined. Expand
A Reevaluation of the Key Factors That Influence Tomato Fruit Softening and Integrity1[W][OA]
Biochemical and biomechanical analyses identified several unusual features of DFD cuticles and the data indicate that, as with wall metabolism, changes in cuticle composition and architecture are an integral and regulated part of the ripening program. Expand