Correction: Reference genes selection and normalization of oxidative stress responsive genes upon different temperature stress conditions in Hypericum perforatum L.

[This corrects the article DOI: 10.1371/journal.pone.0115206.].

There is an error in Fig. 3, “Relative mRNA expression of target genes in cold-treated samples,” Panel B, as well as in the legend for Fig 3. Please see the corrected Fig. 3 and its legend here.

Fig 3

Relative mRNA expression of target genes in cold-treated samples.

Expression of a) CHS, b) CAT1, c) AOX1, and d) AOX2 in cold-treated samples using TUB, GSA and GAPDH as reference genes in data normalization. The relative expression values are depicted as the mean ± standard deviation of three biological replicates and correspond to the ratio between treated and untreated samples for each time point. The bars represent the fold-change related to control group (0 hours) which was set to 1. Statistical significances (*p≤0.05 and **p≤0.01) between the two means were determined by the t-test using IBM SPSS Statistics version 22.0 (SPSS Inc., USA).

There is an error in Fig. 4, “Relative mRNA expression of target genes in heat-treated samples,” Panel B, as well as in the legend for Fig. 4. Please see the corrected Fig. 4 and its legend here.

Fig 4

Relative mRNA expression of target genes in heat-treated samples.

Expression of a) CHS, b) CAT1, c) AOX1, and d) AOX2 in heat-treated samples using TUB, 26S and H2A as reference genes in data normalization. The relative expression values are depicted as the mean ± standard deviation of three biological replicates and correspond to the ratio between treated and untreated samples for each time point. The bars represent the fold-change related to control group (0 hours) which was set to 1. Statistical significances (*p≤0.05 and **p≤0.01) between the two means were determined by the t-test using IBM SPSS Statistics version 22.0 (SPSS Inc., USA).