Characterization of dwarf GA mutants of arabidopsis thaliana
Conference
·
· Plant Physiology, Supplement; (USA)
OSTI ID:5850991
- MSU-DOE Plant Research Laboratory, East Lansing, MI (USA)
- Agricultural Univ., Wageningen (Netherlands)
The presence of three separate gibberellin (GA) pathways in wild-type Arabidopsis was established by analysis of the endogenous GAs by GC-MS: (1) The 13-hydroxylation pathway (GA{sub 51}, GA{sub 44}, GA{sub 19}, GA{sub 17}, GA{sub 20}, GA{sub 1}, GA{sub 29}, and GA{sub 8}); (2) the 3{sup {beta}}, 13- pathway (GA{sub 12}, GA{sub 15}, GA{sub 24}, GA{sub 25}, GA{sub 9}, and GA{sub 51}), and (3) the 3{beta}-hydroxylation pathway (GA{sub 37}, GA{sub 27}, GA{sub 36}, GA{sub 13}, GA{sub 4}, and GA{sub 34}). The GA-responsive mutants {und ga-1}, {und ga-2}, {und ga-3}, {und ga-4}, and {und ga-5}, as well as the GA-insensitive mutant {und gai} showed altered GA metabolism which resulted in accumulation, reduction, or lack of specific GAs. These data, together with results from feeding experiments with GAs and precursors, provide evidence for the steps in the pathways blocked in each mutant.
- OSTI ID:
- 5850991
- Report Number(s):
- CONF-9007196--
- Conference Information:
- Journal Name: Plant Physiology, Supplement; (USA) Journal Volume: 93:1
- Country of Publication:
- United States
- Language:
- English
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