AI Article Synopsis
- Xyloglucan is essential for the structure of plant cell walls and influences cell growth.
- The study uses split pea stem segments to show that full xyloglucan inhibits cell elongation while its oligosaccharide fragments promote it.
- The research reveals how xyloglucan's incorporation and its fragments affect the arrangement of microtubules within the cells, suggesting a role in regulating plant cell elongation.
Article Abstract
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.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC124422 | PMC |
| http://dx.doi.org/10.1073/pnas.132080299 | DOI Listing |
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