Question: what genes are used in dna barcoding of plants?
Answer: Four are portions of coding genes (matK, rbcL, rpoB, and rpoC1), and 3 are noncoding spacers (atpF–atpH, trnH–psbA, and psbK–psbI). Different research groups have proposed various combinations of these loci as their preferred plant barcodes, but no consensus has emerged (5–12).