Consequences of administration of indoleacetic acid 



Figure J. The fate of lAA fed to 

 excised pea root apices. The left 

 ordinate refers to free I A A' and 

 'bound lAA' ; the right ordinate to 

 'lAA destroyed' . 



10 20 30 



2¥ -D/nifropheno/ 



30 60 90 r20 



Incubation time — ► 



750 180 



min 



Figure 2. The inhibition of lAA 

 coupling to pea root protein in vivo by 

 2-A-dinitrophenol. 



¥0 50 



nxto-'*- 



Figure 3. The inhibition of LAA 

 coupling to pea root protein in vivo 

 by another auxin, OL-naphthalene acetic 

 acid. 



5 70 75 



a ' t^aptithaieneacetic acid 



20 



221 



