Fig. 4.

Zmetr2b and Zmers1b exert dominance in Arabidopsis in a hemizygous state. Line T:Zmetr2b L9 (A) and T:Zmers1b L11 (B) were crossed with wild-type (WT) Arabidopsis to generate seed hemizygous for each transgene. Seed containing each transgene in a hemizygous or homozygous state were germinated in the dark for 5 days on media with 20 μM ACC to assay for their triple response. Three representative seedlings are shown for each line. Quantitative measurements for hypocotyl and root lengths with standard deviations are shown in Table 3. Wild-type (WT) plants were included as an ethylene sensitive control