In an effort to examine the specificity of the auxin transport system, the movement of a variety of growth substances and of auxin analogues through corn coleoptile sections was measured in both the basipetal and acropetal directions. In contrast to the basipetal, polar transport of the auxins indol
Effect of auxins on the auxin transport system in coleoptiles
โ Scribed by D. L. Rayle; R. Ouitrakul; R. Hertel
- Publisher
- Springer-Verlag
- Year
- 1969
- Tongue
- English
- Weight
- 294 KB
- Volume
- 87
- Category
- Article
- ISSN
- 0032-0935
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โฆ Synopsis
Within 20 min of its application, auxin enhances the transport processes that move auxin molecules through coleoptfle tissue. The effect was observed after treatment with indoleacetic acid and a-naphthaleneacetic acid, but not with growth-inactive auxin analogues.
๐ SIMILAR VOLUMES
Plastic and elastic in-vitro extensibilities (Epl and Eol) of cell walls from growing maize (Zea mays L.) coleoptile segments were measured by stretching frozen-thawed tissue, pre-extended to its in-vivo length, at constant force (creep test) in a custom-buildt extensiometer, equipped with a linear-
Wild-type corn coleoptiles showed an initial downward bending upon transfer from the vertical to the horizontal position. Strong upward curvature started only 15-30 min after the begin of horizontal exposure.Little, if any at all, initial downward geotropic bending was found with amylomaize coleopti