Figure 8.

Differential regulation of S. longipes α-expansins in response to green shading. Relative transcript abundance of S. longipes α-expansins expressed in the internodes of alpine and prairie plants exposed to green shade (gray circles) and control (unaltered spectral composition; black circles) light conditions for 3 d. Values were measured using real-time RT-PCR with 18S as an internal standard (means ± se; n = 3–4). Statistically significant differences are indicated by asterisks (Student's t test, P < 0.05).