Literature DB >> 16657047

Biological and chemical properties of the epidioxide isomer of abscisic Acid and its rearrangement products.

E Sondheimer1, B M Michniewicz, L E Powell.   

Abstract

The growth inhibitory activity of the epidioxide (II), a precursor in the synthesis of abscisic acid (ABA), has been confirmed with additional assay systems. Under physiological conditions the epidioxide is rearranged to give ABA and an isomer of ABA which has probably the structure V. This major product has very low, if any, biological activity. The biological activity of the epidioxide is explained by its partial conversion (about 20%) to ABA. The reaction rate was enhanced by heavy metal ions and decreased by EDTA. At pH 12.5, the decomposition of the epidioxide is slower than it is near neutrality and ABA is the predominant product. In the biological systems studied the activity of the epidioxide can be accounted for by nonenzymatic conversion to ABA.

Entities:  

Year:  1969        PMID： 16657047      PMCID： PMC396063          DOI： 10.1104/pp.44.2.205

Source DB:  PubMed          Journal:  Plant Physiol        ISSN： 0032-0889            Impact factor:   8.340


  6 in total

1.  Studies on the Growth of Coleoptile and First Internode Sections. A New, Sensitive, Straight-Growth Test for Auxins.

Authors:  J P Nitsch; C Nitsch
Journal:  Plant Physiol       Date:  1956-03       Impact factor: 8.340

2.  Effects of Abscisin II and Other Plant Growth Substances on Germination of Seeds with Stratification Requirements.

Authors:  E Sondheimer; E C Galson
Journal:  Plant Physiol       Date:  1966-10       Impact factor: 8.340

3.  HORMONAL CONTROL OF ENZYME SYNTHESIS IN BARLEY ENDOSPERM.

Authors:  J E Varner; G R Chandra
Journal:  Proc Natl Acad Sci U S A       Date:  1964-07       Impact factor: 11.205

4.  Abscisin II, an Abscission-Accelerating Substance from Young Cotton Fruit.

Authors:  K Ohkuma; J L Lyon; F T Addicott; O E Smith
Journal:  Science       Date:  1963-12-20       Impact factor: 47.728

5.  Abscisic acid: a new name for abscisin II (dormin).

Authors:  F T Addicott; J L Lyon; K Ohkuma; W E Thiessen; H R Carns; O E Smith; J W Cornforth; B V Milborrow; G Ryback; P F Wareing
Journal:  Science       Date:  1968-03-29       Impact factor: 47.728

6.  Germination of phaseolus vulgaris I. Resumption of axis growth.

Authors:  D C Walton
Journal:  Plant Physiol       Date:  1966-02       Impact factor: 8.340
  6 in total
  2 in total

1.  Variations in the carotenoid content of Chlamydomonas reinhardii throughout the cell cycle.

Authors:  G W Francis; L P Strand; T Lien; G Knutsen
Journal:  Arch Microbiol       Date:  1975-08-28       Impact factor: 2.552

2.  Structure-activity correlations with compounds related to abscisic acid.

Authors:  E Sondheimer; D C Walton
Journal:  Plant Physiol       Date:  1970-03       Impact factor: 8.340
  2 in total

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