Table 2. Functional annotation of high-quality unique sequences by sequence similarity (e-value<1e-5).

	Database	P. euphratica		P. pruinosa
		Number	Percent (%)	Number	Percent (%)
Annotated	Nr	58 314	67.2	65 219	56.8
	Swissprot	36 330	41.9	39 524	34.4
	COG	16 096	18.5	17 905	15.6
	KEGG	24 504	28.2	26 817	23.3
	GO	92 96	10.7	11 587	10.1
	Total	58 499	67.4	67 400	58.7
Unannotated		28 278	32.6	47 466	41.3
Total		86 777	100	114 866	100

Transcriptome annotation of P. euphratica was reported by Qiu et al [24]. GO was searched by Blast2GO.