Comparative genomics and transcriptomics analysis reveals evolution patterns of selection in the Salix phylogeny

Table 5 Number and function annotation of positive selection genes in Genus Salix

	S. purpurea	S. suchowensis	S. sachalinensis	S. dasyclados	S. viminalis	S. eriocephala	S. fargesii	S. matsudana
S. purpurea
S. suchowensis	660
S. sachalinensis	398/G	335
S. dasyclados	454/CG	306/C	267/CG
S. viminalis	414/G	270	254/L	270/G
S. eriocephala	404	320	295	289/CG	281/G
S. fargesii	414/CHU	302/H	260	281	255	242
S. matsudana	351	242/G	210	238	207	212	257/UG
S. babylonica	39	23	26	28	32	24	29	36/U

C: Cold-stress; H: Heat-stress; L: Light-stress; U: Universal-stress; G: Multiple stresses by Glutathione S-transferase protein including Cold-, drought-, Salt- and Oxidation-; The Ka and Ks of resistance genes are shown in Additional file 1: Table S4. The sequences of resistance genes are shown in Additional file 5

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