FIGURE 1.

Ethylene receptors affect germination in response to different wavelengths of light. Seed germination of wild-type seeds was compared to ethylene receptor loss-of-function mutants. Seeds were treated with 4 h of white light, followed by 3 h of different colors of monochromatic light or white light as indicated. For dark controls, seeds were treated for 5 min with far-red light immediately after sowing without a pre-treatment with white light. The seeds were then placed in darkness for 7 days. At that time seed germination was measured and the percent of seed germination calculated. Plots show the average ± SD from at least three biological replicates. ND denotes no germination detected. Data were analyzed by t-tests and differences considered statistically significant with P < 0.05. ^aSignificant difference from white light for that ecotype; ^bSignificant difference of mutant from wild-type after the same light treatment.