Figure 6.

Histone Acetylation Levels in the Division versus Differentiation Zone.

(A) Representative immunolabeling images of Arabidopsis nuclei from the division and differentiation zone with an antibody against H2BK20ac in wild-type plants showing an increase in the acetylation levels in the division zone. Bars = 5 μm.

(B) Immunoblot for H4ac in protein extracts from root meristems and differentiation zone of 4-d-old Col-0 seedlings showing higher acetylation levels in the division zone. A general antibody against H3 was used to compare the loadings. Div, division zone; Diff, differentiation zone.

(C) Immunoblot for H4ac in protein extracts from Landsberg erecta wild-type and shy2-31 mutant roots.