Journal
SCIENTIA HORTICULTURAE
Volume 225, Issue -, Pages 310-316Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.scienta.2017.07.018
Keywords
Colored potato; Anthocyanin; Enzyme gene; Transcription factor
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Funding
- National Science Foundation of China [31401437]
- Earmarked Fund for Modern Agro-Industry Technology Research System of China [CARS-10-P06]
- Plan for Scientific Innovation Talent of Henan Province [16n4100510006]
- Research funding for young academic leaders of Henan University of Science and Technology [4026-13490004]
- Innovative Research Team of Henan University of Science and Technology [2015TTD003]
- Doctoral Foundation of Henan University of Science and Technology [4026-13480045]
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Anthocyanin is well-known plant colorant that accounts for the characteristic color of potato tubers and their excellent antioxidant properties. Anthocyanin synthesis involves several enzyme genes and transcription factors. In this paper, the expression of 10 enzyme genes and 11 transcription factors related to anthocyanin biosynthesis in 8 genotypes of colored potato tubers were examined. The results showed that chalcone synthase gene (CHS), flavanone 3-hydroxylase gene (F3H), dihydroflavonol 4-reductase gene (DFR), glutathione S-transferase gene (GS7), flavonoid 3',5'-hydroxylase gene (F3'5'H) and anthocyanidin synthase gene (ANS) play important roles in anthocyanin biosynthesis in colored potato tubers. Further analysis examining the expression correlation between transcription factors and enzyme genes indicated that 4 novel transcription factors, MYB11207, MYB47415, MYB79714 and bHLH31926, may affect anthocyanin synthesis in tubers by regulating the expression of several enzyme genes, especially the MYB member MYB47415.
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