Differential expression of Populus <i>LOX</i> genes under different stress treatments.

<p>Expression is indicated as fold-change of experimental treatments relative to control samples and visualized in heatmaps (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0125526#sec005" target="_blank">Materials and Methods</a>). Green represents low levels and red indicates high levels of transcript abundance. Heatmap showing hierarchical clustering of Populus <i>LOX</i> genes under leaf wounding and methyl jasmonate treatment. Microarray data under the series accession number GSE16786 were obtained from the NCBI GEO database. Tissues analyzed included: YL, young leaves; ML, mature leaves; RT, root tips; C, suspension cell cultures. Stress treatments included: MeJA, Methyl Jasmonate elicitation; wounding, sampled either one week or 90 hours after wounding.