Lateral electrical potential following asymmetric auxin application to maize coleoptiles
✍ Scribed by Michael Morath; Rainer Hertel
- Book ID
- 104751303
- Publisher
- Springer-Verlag
- Year
- 1978
- Tongue
- English
- Weight
- 417 KB
- Volume
- 140
- Category
- Article
- ISSN
- 0032-0935
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✦ Synopsis
Following asymmetric application of indoleacetic acid to maize (Zea mays L.) coleoptiles the early time course of changes in lateral electrical potential was externally monitored with static-drop electrodes. First, an early negative potential change of ca. -1 mV was measured at the surface on the side of a strong auxin application. This negative auxin effect ended after ca. 15 min and was followed by a strong and lasting auxin stimulation of a positive lateral potential up to + 12 mV at the auxin-treated side. The initial auxin effect appeared to depend on the size of the step-up in auxin concentration.