Expression Patterns of ERF Genes Underlying Abiotic Stresses in Di-Haploid Populus simonii × P. nigra

Figure 4

Spatial-temporal expression of 13 PthERFs under drought stress in different tissues. Relative expression level was log₂ transformed: >0, upregulation; =0, no change in regulation; <0, downregulation: (a) in roots; (b) in stems; (c) in leaves.

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(b)

(c)