Figure 9.

Increased tolerance to extended darkness in sdp1 single mutants. A, Three-week-old wild-type (WT) and mutant plants were exposed to darkness (D) for 10 d and then reexposed to light for 10 d before the photograph was taken. Control (CK) plants were grown for 3 weeks under normal growth conditions. B, Increased survival rates of sdp1 single mutants under extended darkness. Three-week-old wild-type and mutant plants were exposed to darkness for 10 d. Surviving plants were scored after reexposure to light for 10 d. C, Changes in leaf FFA levels during dark treatment. D, Changes in TAG content during dark treatment. Data in B to D are the means of three biological replicates with SE. Asterisks indicate statistically significant differences from the untreated wild type based on Student’s t test (P < 0.05).