Publication Date
1993
Location
New Zealand
Description
Elongation and lignification was observed via daily photographs and phloroglucinol-HCI stain on internode 9 (1-9) of growth-chamber grown maize (Zea mays L.) line Mol7 x B73 to correlate internode development with lignification. 1-9 elongated sigmoidally from 8 to 130 mm in 12 days. Lignification began in the upper internode after 3 d and progressed top-down following a basipetal retreat of elongation activity. An improved acetyl bromide method was used to determine UV-absorptive cell wall phenolic concentrations in freeze. dried, ethanol and chloroform:methanol extracted pith parenchyma, pith vascular and rind vascular tissue excised from lower and upper sections of immature, lignifying, and lignified maize 1-9. Pithpnrenchyma and vascular tissue from elongating (immature) internode sections hnd large but variable concentrations of cell-wall phenolics. Pith and rind vascular tissue of post-elongation, lignifying and lignified internodesections had significantly greater cell-wall phenolic concentrations than pith parenchyma.
Citation
Morrison, T A. and Buxton, D R., "Cell Wall Phenolic Content in Tissue Types of Developing Maize Internodes" (1993). IGC Proceedings (1985-2023). 5.
(URL: https://uknowledge.uky.edu/igc/1993/session29/5)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Cell Wall Phenolic Content in Tissue Types of Developing Maize Internodes
New Zealand
Elongation and lignification was observed via daily photographs and phloroglucinol-HCI stain on internode 9 (1-9) of growth-chamber grown maize (Zea mays L.) line Mol7 x B73 to correlate internode development with lignification. 1-9 elongated sigmoidally from 8 to 130 mm in 12 days. Lignification began in the upper internode after 3 d and progressed top-down following a basipetal retreat of elongation activity. An improved acetyl bromide method was used to determine UV-absorptive cell wall phenolic concentrations in freeze. dried, ethanol and chloroform:methanol extracted pith parenchyma, pith vascular and rind vascular tissue excised from lower and upper sections of immature, lignifying, and lignified maize 1-9. Pithpnrenchyma and vascular tissue from elongating (immature) internode sections hnd large but variable concentrations of cell-wall phenolics. Pith and rind vascular tissue of post-elongation, lignifying and lignified internodesections had significantly greater cell-wall phenolic concentrations than pith parenchyma.
