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Research Note |
1 National Research Institute of Brewing, Kagamiyama, Higashi-Hiroshima 739-0046, Japan; 2 Graduate School of Biosphere Science, Hiroshima University, Kagamiyama, Higashi-Hiroshima 739-8528, Japan; and 3 Grape and Persimmon Research Station, National Institute of Fruit Tree Science, Akitsu, Higashi-Hiroshima 729-2494, Japan.
* Corresponding author [tel: 81-82-420-0826; fax: 81-82-420-0809; email: gotoh_n{at}nrib.go.jp]
VvmybA1 is known to encode a transcriptional factor that induces the anthocyanin biosynthesis in grape skins. However, no VvmybA1 mRNA was detected in the young leaves of Cabernet Sauvignon, Dornfelder, or Muscat Hamburg or in the tendrils or stem epidermis of Muscat Bailey A, although these organs accumulated some anthocyanin. These results indicate that VvmybA1 in these cultivars was transcribed specifically in the berry skin. VvmybA1 of Bailey Alicant A, a teinturier cultivar, was transcribed in all the organs that accumulate anthocyanin, which shows that the organ specificity of its expression was probably reduced.
Key words: grape, anthocyanin, VvmybA1, organ specificity
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