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. 2012 Feb 16;7(2):e31149. doi: 10.1371/journal.pone.0031149

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Hu et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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The relative mRNA abundance of four selected HD-ZIP genes was normalized with respect to two reference genes UBQ10 and PP2a in drought and salinity stress treatments. Bars represent standard deviations (SD) of three technical replicates. X-axis is time courses of stress treatments for each gene.