Growth and cell wall changes in azuki bean epicotyls II. Changes in wall polysaccharides during auxininduced growth of excised segments
Growth and cell wall changes in azuki bean epicotyls II. Changes in wall polysaccharides during auxininduced growth of excised segments
复制标题
红豆上胚轴 II 的生长和细胞壁变化。
DOI：
10.1093/oxfordjournals.pcp.a075831
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发表时间：
1979
影响因子：
4.9
通讯作者：
Y. Masuda
中科院分区：
文献类型：
--
作者：
K. Nishitani;H. Shibaoka;Y. Masuda
研究了不同生长条件下iaa诱导的紫豆上胚轴伸长生长过程中细胞壁多糖含量和细胞壁力学性能的变化。蔗糖对iaa诱导的细胞伸长有促进作用，但对iaa诱导的细胞壁松动影响不大。在没有蔗糖的情况下，在孵育期间，细胞壁中半乳糖的数量减少。IAA促进了半乳糖水平的下降。另一方面，在蔗糖存在的情况下，IAA诱导非纤维素多糖中纤维素、半乳糖和木糖的含量增加。当甘露醇浓度高于0.1 M时，IAA诱导的细胞壁增加未被观察到，尽管即使在0.2 M甘露醇存在时，IAA也会诱导细胞壁松动。
Changes in cell wall polysaccharides and mechanical properties of the cell wall were examined during IAA-induced elongation growth of excised azuki bean epicotyl segments under different growth conditions. Sucrose promoted IAA-induced cell elongation, but had very little effect on IAA-induced cell wall loosening. In the absence of sucrose, the amount of galactose in the cell wall decreased during the incubation period. IAA enhanced the decrease in the galactose level. In the presence of sucrose, on the other hand, IAA induced increases in the amounts of cellulose, galactose and xylose in noncellulosic polysaccharides. These IAA-induced increases were not observed in the presence of mannitol at concentrations higher than 0.1 M, although cell wall loosening was induced by IAA even in the presence of 0.2 M mannitol.