4 結果
Endopeptidase activities during the differentiation of Zinnia cells into tracheary elements (TEs) were examined with several peptidyl 4-methyl-7-coumarylamido (MCA) as substrates. The activity that hydrolysed carbobenzoxy-Phe-Arg-MCA (Z-Phe-Arg-MCA) at pH 5 increased in a differentiation-related
The terminal process of xylogenesis, autolysis, is essential for the formulation of a tubular system for conduction of water and solutes throughout the whole plant. Several hydrolase types are implicated in autolysis responsible for the breakdown of cytoplasm. Here, we characterize p48h-17 cDNA from
Tracheary element formation from isolated Zinnia leaf mesophyll cells is an excellent system for the dissection of patterned secondary cell wall thickening and lignification. We used mRNAs from cells cultured for 48 h in the induction medium to isolate differentially regulated genes. Thirteen unique
To determine whether proteasome activity is required for tracheary element (TE) differentiation, the proteasome inhibitors clasto-lactacystin beta-lactone and carbobenzoxy-leucinyl-leucinyl-leucinal (LLL) were used in a zinnia (Zinnia elegans) mesophyll cell culture system. The addition of