Changes in the Autolytic Activities of Maize Coleoptile Cell Walls during Coleoptile Growth

Sugar composition of oat-coleoptile cell walls.

Phenolic acids in wheat coleoptile cell walls.

The phenolic constituent of nonvascular cell walls of wheat (Triticum aestivum L.) coleoptiles, which yields vanillin upon nitrobenzene oxidation, is not lignin as I previously claimed. It seems to be mainly ferulic acid bonded to carbohydrate, probably by an ester linkage. The acid is associated with a fraction of the wall rich in arabinose and xylose, although it is not known whether it is es...

Changes in Calcium Levels in Cell Walls during Elongation of Oat Coleoptile Sections.

1. ARNOILD, A. \W. AND S. A. BROWN. 1963. Tracer studies on the light-induced formation of a cyanidin glucoside by Sorghum seedlings. Proc. Can. Soc. Plant Physiol. Spring, 1963. p 14-5. Abstract. 2. Bopp, M. AND B. MArrHISS. 1962. tber den Zusammenhang der Biogenese von Anthocyan und Leukoanthocyan. Z. Naturforsch. 17b: 811-18. 3. DOWNs, R. J. AND H. W. SIEGELMAN. 1963. Photocontrol of anthocy...

Lignin formation in wheat coleoptile cell walls: a possible limitation of cell growth.

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, decreas...

-Stimulated Exocytosis in Maize Coleoptile Cells

in the cytoplasm ([Ca 2 1 ] cyt ) were interpreted as representing changes in [Ca 2 1 ] cyt –sensitive exocytosis and endocytosis. A continuous increase in [Ca 2 1 ] cyt resulted in a sigmoidal increase in C m values with a half-maximal concentration at z 1 m M. The steep increase in C m values was followed by a variable slow phase in changing C m values. When [Ca 2 1 ] cyt increased at a rate ...