摘要
IAA和GA3均能促进豌豆黄化苗茎切段的伸长。IAA效应可以为GA的合成抑制剂S-3307抑制,GA3效应同样也为IAA的运输抑制剂TIBA所抑制,并且分别再施用GA3和IAA后,抑制效应又能有所解除。观察顶端切半茎切段的结果表明,IAA主要促进茎切段表皮细胞的伸长,而GA3可能主要促进内部组织细胞的伸长。观察切段横纵切片的结果则显示,IAA促进皮层细胞的伸长和增大,而GA3只促进皮层细胞的伸长。这些结果说明两者是通过不同的作用部位和方式共同调节豌豆茎切段伸长生长的。
The elongation of etiolated stem segments in Pisum sativum L. was promoted by both exogenous IAA and GA3. The effect of IAA on the segment elongation could be blocked by gibberellin biosysthesis inhibitor S-3307, meanwhile, the effect of GA3 was inhibited by auxin transport inhibitor TIBA. These inhibitions could be relieved by reusing GA3 and IAA respectively. The observation of split halves of the apical segments indicated that IAA promoted the elongation of cortical cell, while GA3 promoted the elongation of inward tissue cells primarily.
出处
《植物生理学通讯》
CSCD
北大核心
2006年第2期207-212,共6页
Plant Physiology Communications
关键词
IAA
GA3
豌豆的茎切段
伸长生长
相互作用
auxin
gibberellins
stem segment of Pisum sativum L.
elongation
interaction
