Extended Data Fig. 4: phb/phv second-site mutations partly rescue the brx mutant phenotype.
From: Antagonistic CLE peptide pathways shape root meristem tissue patterning
a, Confocal microscopy images of 5-day-old root meristems of the indicated genotypes, showing optical longitudinal sections (top) and cross sections (bottom). Orange arrowheads in longitudinal sections point out protophloem sieve element cell files, yellow arrowheads indicate protophloem sieve element precursors that fail to differentiate. Colored dots in cross sections indicate cell files derived from the phloem-procambium precursor stem cell (see Fig. 1a). b, Root length measurements for 7-day-old seedlings of the indicated genotypes. Box plots display 2nd and 3rd quartiles and the median, whiskers indicate maximum and minimum. Statistically significant differences (lower case letters) were determined by ordinary one-way ANOVA followed by Tukey’s test, two-sided, p ≤ 0.0038. n = 15–79 independent biological replicates. c, Images of representative 7-day-old seedlings of the indicated genotypes.
