Arabidopsis mutants containing an inactivating insertion in RFR1 or in both REF4 and RFR1 do not phenotypically resemble the previously reported ref4-3 mutant.
A, comparison of 3-week-old rosettes from a wild-type plant and plants containing a single inactivating insertion in the REF4 gene (ref4), RFR1 gene (rfr1), or both (ref4 rfr1), together with plants homozygous for the previously described ref4-3 point mutation. B, mature plants and C, seeds of plants with the genotypes described in A.