In planta colocalization of p20 and Hsp70h, N42, or C23. The green color corresponds to the GFP fluorescence; the red spots represent the autofluorescent chloroplasts. Upper row, transient expression of the GUS-GFP, p20-GFP, and Hsp70h-GFP fusion products. GFP-GUS was used as a control product that is distributed uniformly throughout the cortical cytoplasm and cytoplasmic strands. Lower row, coexpression of GUS-GFP or p20-GFP fusion products with free Hsp70h, N42, or C23.