Additional file 6: of Characterization of the Populus Rab family genes and the function of PtRabE1b in salt tolerance

Figure S5. Expression profiles of PtRab genes across different tissues and under various abiotic stresses. Heatmap showing expression of PtRab genes across tissues (A), different stem development/growth stages (B) and under various abiotic stresses (C) in poplar. For abiotic stresses, Stress treatments including: low N, nitrogen limitation; wounding, sampled either one week or 90 h after wounding; EAR, early response to water deficit by 36 h; LMI, long-term (10 day) response to mild stress with soil relative extractable water (REW) at 20–35%; LMO, long-term (10 day) response to moderate stress with soil REW at 10–20%; heat, 42 °C for 6 h; and cold, 4 °C for 10 h. Genotypes including P. fremontii × P. angustifolia clones 1979, 3200 and RM5 (low N and wounding), P. deltoids clones Soligo and Carpaccio (drought), and P. simonii (heat and cold). Color scale represents log2 expression values, green represents low level and red indicates high level of transcript abundances. Blank represents a gene has no corresponding probe sets in the microarray data. The microarray data (GSE21481, GSE21485, GSE13043, GSE16786, GSE17230, GSE41557 and GSE43872) were obtained from NCBI Gene Expression Omnibus (GEO) database. (TIF 3420 kb