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Ethylene stimulates nutations of etr1-6 etr2-3 ein4-4 seedlings transformed with an ETR1 transgene mutated at Asp659. The hypocotyl angles from seven etr1-6 etr2-3 ein4-4 triple mutants transformed with an ETR1 transgene mutated at Asp659 (getr1[D]) are shown in two panels. One seedling in (A) (black) had no measurable nutations while one in (B) (black) had very small nutations.
