| 生长素极性运输的自动抑制 |
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| 引用本文： | 李春俭. 生长素极性运输的自动抑制[J]. Acta Botanica Sinica, 1997, 0(8) |
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| 作者姓名： | 李春俭 |
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| 作者单位： | 中国农业大学植物营养系 北京 |
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| 基金项目： | 回国留学人员启动经费资助项目 |
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| 摘 要： | 以豌豆(Pisum sativum L.)和绿豆(Phaseolus radiatus L.)为材料证明了IAA极性运输的自动抑制现象。用改进的“供体-受体技术”证明:受体中的IAAA可抑制~3H-IAA的极性运输,抑制程度随受体中加入IAA浓度的增加而增强;在“Y”型外植体一侧切口施用的IAA也可抑制~3H-IAA在另一侧的极性运输,并导致~3H-IAA在该侧组织中的积累以及代谢或钝化的增强。此外,组织中游离~3H-IAA的比例也随运输时间的延长而不断减小。
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| 关 键 词： | 绿豆 豌豆 3~H-IAA极性运输 自动抑制 |
AUTOINHIBITION IN POLAR TRANSPORT OF EVDOLEACETIC ACID |
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| Li Chun-jian. AUTOINHIBITION IN POLAR TRANSPORT OF EVDOLEACETIC ACID[J]. , 1997, 0(8) |
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| Authors: | Li Chun-jian |
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| Abstract: | Autoinhibition in polar transport of 3H-IAA from donor to receiver was demonstrated in pea (Pisum sativum L.) and mung bean (Phaseolus radiatus L.) using either classic "donor-receiver system" where unlabelled IAA was present in the receiver or using "Y" form explants where unlabelled IAA in lanolin was applied to the cut surface of a separate side of the explants. Application of unlabelled IAA resulted in accumulation and high rate of metabolism of 3H-IAA in the labelled tissues, and these were further stimulated by prolonging the experimental period. |
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| Keywords: | Pea Mung bean Polar H-IAA transport Autoinhibition |
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