Lignin Formation in Wheat Coleoptile Cell Walls: A Possible Limitation of Cell Growth 1
AUTOR(ES)
Whitmore, F. W.
RESUMO
Four growth-influencing compounds—hydroxyproline, 2,2′-dipyridyl, 2-chloroethylphosphonic acid, and indoleacetic acid—were used to examine the relationship between lignin formation and growth of wheat coleoptile sections. Hydroxyproline and 2-chloroethylphosphonic acid, at low concentrations, inhibited growth and increased lignin content. Dipyridyl, which promoted coleoptile elongation, decreased lignin content. Indoleacetic acid caused a 300% increase in growth at 0.1 mm but resulted in lignin content no different from controls with no auxin. Chemical and anatomical evidence is given which indicates that lignin is present in the epidermal cell walls of the wheat coleoptile. It is thus possible that bonding between lignin and hemicellulose may have some influence on coleoptile growth.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=396911Documentos Relacionados
- Phenolic Acids in Wheat Coleoptile Cell Walls 1
- Structure of Plant Cell Walls: XI. GLUCURONOARABINOXYLAN, A SECOND HEMICELLULOSE IN THE PRIMARY CELL WALLS OF SUSPENSION-CULTURED SYCAMORE CELLS 1
- The Structure of Plant Cell Walls: VI. A Survey of the Walls of Suspension-cultured Monocots 1
- The Structure of Plant Cell Walls: VII. Barley Aleurone Cells 1
- Regulation of Bacterial Cell Walls: Turnover of Cell Wall in Staphylococcus aureus
