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Figure 5


Fig. 5. Expression of an auxin and a cell death marker is altered in acl5. (A,B) Histochemical GUS staining of 7-day-old ProDR5:GUS (A) and acl5 ProDR5:GUS (B) seedlings grown in vitro. ProDR5:GUS expression is present in the developing vessel elements of acl5 hypocotyl but not in the wild type. (C,D) Histochemical GUS staining in 7-day-old ProXCP2:GUS (C) and in acl5 ProXCP2:GUS (D) seedlings grown in vitro. ProXCP2:GUS activity in the immature vessel elements (arrowheads) of acl5 is indicative of an early onset of the vessel cell death program. Scale bar: 50 µm.