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Figure 3 | BMC Plant Biology

Figure 3

From: Suppression of the auxin response pathway enhances susceptibility to Phytophthora cinnamomi while phosphite-mediated resistance stimulates the auxin signalling pathway

Figure 3

Effect of phosphite on phosphate starvation responsive genes in Col-0, aba2 - 4 and tir1 - 1. Relative expression ratios of AT4 and PHR1 transcripts in Arabidopsis thaliana wild ecotype (Col-0) and Arabidopsis mutants aba2-4 and tir1-1 grown in phosphate (Pi) sufficient media (1.25 mM) for three weeks followed by a further five days growth in different Pi (1.25 mM Pi; +Pi and 0 mM Pi; −Pi) and phosphite (Phi) (0, 0.5, 2.5 and 20 mM) levels. The transcript levels in the mutant were normalized based on the expression of actin 2 (ACT2) measured in the same samples and presented relative to the normalized expression levels in non-Phi treated, Pi-sufficient grown Col-0. Bars present the mean and standard error from four replicates each consisting of three plants. The numbers on each bar indicate the fold change in gene transcript levels relative to corresponding Pi sufficient (+Pi), non-Phi-treated plants. One way ANOVA indicated a significant (P < 0.001) difference between genotypes. LSD (5%) for AT4 and PHR1 were 23.96 and 1.01, respectively.

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