Figure 2.

DNA sequence alignment results and SNP sites of the four nucleotide signatures. (A) Alignment of Cynomorium songaricum nucleotide signature with its region location in ITS2; (B) Alignment of Cistanche sinensis nucleotide signatures with its region location in ITS2; (C) Alignment of Boschniakia rossica nucleotide signature with its region location in ITS2; (D) Alignment of Orobanche coerulescens nucleotide signature with its region location in ITS2. The highlighted regions represent nucleotide signature regions and the marked bases represent the SNP sites of each nucleotide signature, the dots represent identical nucleotides.