| IAA和GA3在调控豌豆黄化苗茎切段伸长生长中的相互作用 |
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| 引用本文： | 蒋宇霞,甘立军,夏凯.IAA和GA3在调控豌豆黄化苗茎切段伸长生长中的相互作用[J].植物生理学通讯,2006,42(2):207-212. |
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| 作者姓名： | 蒋宇霞 甘立军 夏凯 |
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| 作者单位： | 南京农业大学生命科学学院,南京,210095 |
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| 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。
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| 关 键 词： | 豌豆的茎切段 伸长生长 相互作用 |
| 收稿时间： | 2005-08-21 |
| 修稿时间： | 2006-01-06 |
Interactions between IAA and GA3 in Regulation of Etiolated Stem Segment Elongation in Pisum sativum L. |
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| JIANG Yu-Xia,GAN Li-Jun,XIA Kai.Interactions between IAA and GA3 in Regulation of Etiolated Stem Segment Elongation in Pisum sativum L.[J].Plant Physiology Communications,2006,42(2):207-212. |
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| Authors: | JIANG Yu-Xia GAN Li-Jun XIA Kai |
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| Abstract: | 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. |
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| Keywords: | IAA GA3 |
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