DOES ETHYLENE MEDIATE ROOT GROWTH INHIBITION BY INDOLE-3-ACETIC ACID
DOES ETHYLENE MEDIATE ROOT GROWTH INHIBITION BY INDOLE-3-ACETIC ACID
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DOI：
10.1104/pp.43.9.1375
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发表时间：
1968-01-01
期刊：
影响因子：
7.4
通讯作者：
DUMAS, T
中科院分区：
文献类型：
--
作者：
ANDREAE, WA;VENIS, MA;DUMAS, T
在各种条件下比较了乙烯和吲哚乙酸（IAA）对豌豆离体根段生长的影响。处理16小时后，IAA的抑制作用是完全可逆的根部分转移到IAA的自由解决方案。相反，乙烯的抑制作用几乎是完全不可逆的。IAA从零开始抑制生长;乙烯通常在最初的3至6小时内没有影响。乙烯的抑制作用取决于组织年龄和溶液组成等因素，这些因素对IAA抑制作用没有重大影响。100 μmIAA可促进乙烯释放，但在相同浓度下使乙烯释放速率降低2 ~ 3倍的条件下，IAA对伸长的抑制作用不受影响。乙烯在IAA对豌豆根生长的抑制中起着很小的作用。
The effects of ethylene and of indole-3-acetic acid (IAA) on growth of excised pea root sections have been compared under a variety of conditions. After 16 hours treatment the inhibitory action of IAA is fully reversible on transfer of the root sections to IAA-free solutions. In contrast, inhibition by ethylene is almost totally irreversible. IAA inhibits growth from zero time; ethylene is generally without effect during the first 3 to 6 hours. The inhibitory action of ethylene is dependent on factors such as tissue age and solution composition which have no major effect on IAA inhibition. Ethylene production is enhanced by 100 μmIAA, but conditions which reduce the rate of ethylene evolution 2 to 3-fold at the same IAA concentration fail to affect the inhibitory action of IAA on elongation. It seems unlikely that ethylene can play more than a minor role in mediating inhibition of pea root growth by IAA.