Fig. 8. Pro_ACL5:DT-A expressing plants show acl5-like xylem specification. (A) Proportion of the different types of the vessel elements in the hypocotyls of wild-type, acl5 and Pro_ACL5:DT-A homozygous lines 4 and 5. (B) The length and width of individual xylem vessel elements in the hypocotyls of the different genotypes. More than 200 cells were scored from macerated hypocotyls of three 2-month-old plants for each genotype. Data are presented as average±s.e.m. ^***P<0.005, as compared with the wild type using a Kruskal-Wallis test.