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KMID : 0613820070170050641
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Journal of Life Science
2007 Volume.17 No. 5 p.641 ~ p.645
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Isolation and characterization of ethyl methane sulfonate (EMS) Arabidopsis mutants capable of germination under saline conditions
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Chung Moon-Soo
Chung Jung-Seong
Kim Cheol-Soo
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Abstract
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We conducted a seed germination screening under saline conditions to identify salt tolerance (sto) mutants with ethyl methane sulfonate (EMS) mutagenesis seed pool. During the screening, we identified three mutant lines that seemed to confer elevated salt tolerance in high concentrations of NaCl. At 175 mM NaCl, germination rate of sto42-14 mutant (one of the EMS salt tolerance mutants) was 7-fold higher than that of wild-type plants. Interestingly, sto42-14 mutant exhibited insensitivity to high glucose concentration and growth inhibition to gibberellin. Our results suggest that sto42-14 is involved in salt stress tolerance as well as in glucose and gibberellin response in Arabidopsis.
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KEYWORD
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Gibberellin, glucose insensitivity, salt stress, seed germination
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