1. Hook Angle of Curvature, (º)
Figure S1 40 80
100
120
140
180
Hook Angle of Curvature, (º)  * Ws
xbat35-1
Col-0
xbat35-2
XBAT35- RNAi #3
XBAT35- RNAi #7
160
***
control
1 µM IAA
100 nM EBR
20 µM MeJA
0.01 µM PAC 20 60
DNG
Figure S1. Effect of Auxin, Brassinosteroids, Jasmonate and Paclobutrazol on Apical Hook Curvature of XBAT35 Loss-of-Function Lines.
Apical hook curvature of Col-0, xbat35-1, two independent XBAT35-RNAi lines, Ws and xbat35-2 seedlings grown 3 days in the dark under control conditions (white bars) or in the presence of 1 µM IAA, 100 nM EBR, 20 µM MeJA or M PAC (light gray to black bars, respectively). The inset illustrates the determination of the hook angle (means ± SE, n = 40-60). Asterisks indicate significantly different values (* P < 0.05; *** P < 0.001) from the corresponding wild-type under each condition according to Student’s t test. DNG, did not germinate.