Suppression and acceleration of cell elongation by integration of xyloglucans in pea stem segments
AUTOR(ES)
Takeda, Takumi
FONTE
National Academy of Sciences
RESUMO
Xyloglucan is a key polymer in the walls of growing plant cells. Using split pea stem segments and stem segments from which the epidermis had been peeled off, we demonstrate that the integration of xyloglucan mediated by the action of wall-bound xyloglucan endotransglycosylase suppressed cell elongation, whereas that of its fragment oligosaccharide accelerated it. Whole xyloglucan was incorporated into the cell wall and induced the rearrangement of cortical microtubules from transverse to longitudinal; in contrast, the oligosaccharide solubilized xyloglucan from the cell wall and maintained the microtubules in a transverse orientation. This paper proposes that xyloglucan metabolism controls the elongation of plant cells.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=124422Documentos Relacionados
- Light-dependent Elongation of Anaerobically Maintained Green Pea Stem Segments and Its Implications
- The Influence of Cobalt and Sugars upon the Elongation of Etiolated Pea Stem Segments1
- Turnover of Cell Wall Polysaccharides in Elongating Pea Stem Segments 1
- Inhibition of Gibberellic Acid-induced Elongation in Avena Stem Segments by a Substituted Pyrimidine 1
- Interaction of Nucleotides with Auxins in Growth of Pea Stem Segments 123