Figure 2: Adaptation of P. euphratica to salt stress.
From: Genomic insights into salt adaptation in a desert poplar
(a) Comparison of the proportions of expanded genes in the P. euphratica and P. trichocarpa lineages relative to their common ancestor. The number of expanded genes of each class is indicated above each bar. (b) Tandem duplications of HKT1 genes. Note that the PtrHKT1-like gene is pseudogenized in P. trichocarpa. (c) PSGs and expanded key genes in salt-stress response pathways of P. euphratica. Boxes with borders indicate PSGs (red) and expanded (black) P. euphratica genes, and the filled colors correspond to their degree of regulation in FPKMtreatment/FPKMcontrol in response to salt stress. (d) Comparison of the proportions of PSGs in the P. euphratica and P. trichocarpa lineages. The number of PSGs of each class is indicated above each bar. FPKM, fragments per kilobase of exon per million fragments mapped.
