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. 2016 May 23;11(5):e0155814. doi: 10.1371/journal.pone.0155814

Fig 9. Relative expression levels of Ma4CL gene under ABA treatment.

Fig 9

Ma4CL genes in stems (a–d) and roots (e–h) showed different responses. Ma4CL1 and Ma4CL2 expression in stems peaked at 1 and 12 h, respectively, while Ma4CL3 and Ma4CL4 expression did not change significantly. However, Ma4CL3 expression in roots reached its maximum after 3 h, while the expression levels of the other genes increased gradually and reached their maxima after 24 h of treatment. Significant differences (p < 0.05) among treatment are marked with “*”. After 4 d of ABA treatment (i), although all of the RERS were significantly up-regulated, Ma4CL3 expression was only up-regulated 3.46-fold, while Ma4CL1, Ma4CL2, and Ma4CL4 expression was up-regulated approximately 5.23-, 16.50-, and 9.47-, respectively, compared with that of the control (“*” indicates p < 0.01). (j) The ratio of root length and stem length changed significantly under ABA treatment, and taproots became sturdier than control, and the number of root hairs increased significantly. Error bars on each column indicate SDs from three replicates.