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Betacyanins and anthocyanins, two main red fl ower pigments, never occur together in the same plant. Although the anthocyanin biosynthetic pathway has been well analyzed, the biosynthetic genes and the regulatory mechanism of the betacyanin biosynthesis are still obscure. We cloned two cDNAs of DOPA dioxygenase from Phytolacca americana, PaDOD1 and PaDOD2, that may be involved in the betalain biosynthesis. The deduced amino acid sequence of PaDOD1 and PaDOD2 showed approximately 80% homology todoi:10.1515/znc-2009-7-816 fatcat:gtezdcmh2vcvzbw65jgwt6yk6i