Figure 5.

XCT Functions in Light Signaling, with Distinct Phenotypes in Red Compared with Blue and White Light.

In constant red light (A), xct mutants have elongated hypocotyls across multiple fluence rates (P < 0.01, Student's t test), whereas in constant blue (B) or constant white light (C), xct mutant hypocotyls are shortened compared with Col (P < 0.01, Student's t test). In each case, the hypocotyl phenotype was rescued by transformation with genomic XCT under the control of the native promoter; xct-1 XCT, a representative T3 single insertion homozygous line, is shown. Error bars represent se; n = 15 to 20.