Figure 1.

Phytohormone-induced senescence of detached leaves of wild-type (WS2 ecotype), and CBF2-overexpressing plants. (A) Photographs of detached leaves after incubation in water (control), ABA (50 µM), SA (100 µM) and MeJA (50 µM). (B) Percentage of chlorophyll content remaining after exposure to the various hormones, as compared with that in leaves incubated in water. Chlorophyll measurements were performed in leaves 5 and 6, detached from rosettes harvested 36 days after sowing. Data in (B) are means of three different experiments, each including four replications.