Transport of auxin in plant

Transport of auxin in plant

    • The transport of auxin in plant is predominantly polar. In stems, polar transport of auxin is basipetal i.e., it takes place from apex towards base.
    • In roots also, the auxin transport is polar but is primarily acropetal.
    • Jacobs (1961) found polar transport of auxin in coleus stem sections to be both basipetal and acropetal in the ratio of 3:1.
    • According to Audus (1959) some of the auxin synthesized by leaves may be transported to other plant parts through phloem in a rather non-polar manner.
    • Phototropic and geotrophic movements indicate towards lateral transport of auxins in stem tip and root tip respectively.

Last modified: Wednesday, 28 December 2011, 6:13 PM