水稻胚鞘的生长和细胞壁变化：完整生长过程中细胞壁的分级分离和非纤维素多糖的变化。

Growth and cell wall changes in rice coleoptiles : Fractionation of cell wall and changes in noncellulosic polysaccharides during intact growth.

机构信息

Departamento de Fisiologia Vegetal, Facultad de Biologia, Universidad de Salamanca, Salamanca, Spain.

出版信息

Plant Cell Rep. 1981 Dec;1(2):73-6. doi: 10.1007/BF00269278.

Abstract

A fractionation of non-cellulosic sugars of Oryza sativa L. coleoptile cell walls was carried out and the composition of each fraction was studied during coleoptile growth.Percentages of fractions extracted with boiling water and with oxalate (pectic substances) were almost constant throughout development. An increase in the K II hemicellulosic fraction (extracted with 24% KOH) content, and a decrease in the K I hemicellulosic fraction (extracted with 10% KOH) were detected, when coleoptile growth finished.The percentage of glucose content in the K I hemicellulosic fraction was highest in young coleoptiles and lowest in old ones. Furthermore, a highly significant linear relationship between amounts of glucose and growth rate was obtained, while a inverse relationship between the amount of xylose and arabinose and growth rate was attained.

摘要

对水稻 coleoptile 细胞壁的非纤维素糖进行分级，并在 coleoptile 生长过程中研究每个级分的组成。用沸水和草酸盐（果胶物质）提取的级分的百分比在整个发育过程中几乎保持不变。当 coleoptile 生长结束时，检测到 K II 半纤维素级分（用 24%KOH 提取）的含量增加，以及 K I 半纤维素级分（用 10%KOH 提取）的含量减少。在 K I 半纤维素级分中葡萄糖的含量百分比在幼 coleoptiles 中最高，在老 coleoptiles 中最低。此外，获得了葡萄糖量与生长速率之间高度显著的线性关系，而木糖和阿拉伯糖的量与生长速率之间呈反比关系。