Detached leaf senescence experiment. Mature leaves were cut from 2 month
35S:FYFL and wild-type plants and placed on three layers of wet filter paper in 14 cm
Petri dishes, then wrapped in aluminium foil, incubated in the dark at 25uC for 5 d.
Some dishes were placed in a glass desiccator with 20 mlL21 ethylene. The others were
incubated under air condition.