The isolation and characterization of abscisic acid‐insensitive mutants of Arabidopsis thaliana

The isolation and characterization of abscisic acid‐insensitive mutants of Arabidopsis thaliana Abscisic acid (ABA) insensitive mutants of Arabidopsis thaliana (L.) Heynh. were isolated by selecting plants which grew well on a medium containing 10 μM ABA. From the progeny of approximately 3500 mutagen‐treated seeds, five mutants of at least three different loci were isolated. Three mutants were characterized, moreover, by a reduced seed dormancy and by symptoms of withering, indicating disturbed water relations and, therefore, resembled phenotypically the ABA‐deficient mutants we described earlier in this species. Two mutants showed in addition only a reduction of seed dormancy. Compared to wild type, all mutants showed similar or increased levels of endogenous ABA in developing seeds and fruits (siliquae). The role of the different genes involved is discussed in relation to the mechanism of ABA action. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physiologia Plantarum Wiley

The isolation and characterization of abscisic acid‐insensitive mutants of Arabidopsis thaliana

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Publisher
Wiley
Copyright
Copyright © 1984 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0031-9317
eISSN
1399-3054
D.O.I.
10.1111/j.1399-3054.1984.tb06343.x
Publisher site
See Article on Publisher Site

Abstract

Abscisic acid (ABA) insensitive mutants of Arabidopsis thaliana (L.) Heynh. were isolated by selecting plants which grew well on a medium containing 10 μM ABA. From the progeny of approximately 3500 mutagen‐treated seeds, five mutants of at least three different loci were isolated. Three mutants were characterized, moreover, by a reduced seed dormancy and by symptoms of withering, indicating disturbed water relations and, therefore, resembled phenotypically the ABA‐deficient mutants we described earlier in this species. Two mutants showed in addition only a reduction of seed dormancy. Compared to wild type, all mutants showed similar or increased levels of endogenous ABA in developing seeds and fruits (siliquae). The role of the different genes involved is discussed in relation to the mechanism of ABA action.

Journal

Physiologia PlantarumWiley

Published: Jul 1, 1984

References

  • Screening for barley mutants with altered hormone sensitivity in their aleurone layers
    Ho, Ho; Shih, Shih; Kleinhofs, Kleinhofs
  • Droopy: a wilty mutant of potato deficient in abscisic acid
    Quarrie, Quarrie
  • Control of in vitro growth of viviparous embryo mutants of maize by abscisic acid
    Robichaud, Robichaud; Wong, Wong; Sussex, Sussex

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