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A gibberellin insensitive mutant of Arabidopsis thaliana
Author(s) -
Koorneef M.,
Elgersma A.,
Hanhart C. J.,
LoenenMartinet E. P.,
Rijn L.,
Zeevaart J. A. D.
Publication year - 1985
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.1399-3054.1985.tb02355.x
Subject(s) - gibberellin , mutant , arabidopsis thaliana , biology , arabidopsis , wild type , gene , germination , genetics , botany , microbiology and biotechnology
A dwarf mutant of Arabidopsis thaliana (L.) Heynh. was found to be less sensitive to applied gibberellins than the wild type, and this character was controlled by one partially‐dominant gene (denoted Gai) located on chromosome 1. This mutant resembled gibberellin‐deficient mutants since not only stem growth, but also apical dominanace and seed germination were reduced. However, in contrast to the latter mutants, gibberellin does not reverse these effects in the Gai mutant. The insensitivity of the mutant could be quantified in much more detail in the recombinant of this mutation with the GA deficient mutant ga‐1/ga‐1 . Endogenous gibberellins of the Gai mutant did not differ from the wild type either in quantity or composition. The data suggest that the gene controls a step involved in gibberellin action.