“…23,24 G-quadruplex-hemin DNAzyme with peroxidase mimicking catalytic activity is one of the most commonly used DNAzymes, which is capable of catalyzing the oxidation of 2,2 0 -azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS 2− ) or 3,3 0 ,5,5 0 -tetramethylbenzidine (TMB) by H 2 O 2 to form colored products. 25 G-quadruplex DNAzyme has been widely applied for the detection of metal ions, 26,27 nucleic acids, 28,29 proteins, 30,31 and small molecules. [32][33][34] However, to the best of our knowledge, there is no relevant report for the colorimetric detection of plant viral infection by using DNAzyme and PCR.…”