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Auxin Content and Auxin Catabolism in Relation to the Growth Polarity
Author(s) -
Pilet P. E.
Publication year - 1967
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1967.tb07164.x
Subject(s) - auxin , catabolism , biochemistry , polarity (international relations) , microbiology and biotechnology , endogeny , chemistry , biology , metabolism , cell , gene
The auxin level in the root fragments of carrot cultivated in vitro is inversely related to the auxin‐oxidase activity. In the morphological basal region, auxin catabolism is low and, in consequence, auxin content is high. This accumulation of the endogenous auxin leads to the induction of callus. In such new tissues, IAA‐oxidase activity is also very low and, similarly, the auxin content is high: thus, cells can growth rapidly. Consequently the growth polarity is directly related to the auxin catabolism.