By a News Reporter-Staff News Editor at Life Science Weekly -- Research findings on Biological Factors - Biological Pigments are discussed in a new report. According to news reporting from Tokyo, Japan, by NewsRx journalists, research stated, “In a previous study, two genes responsible for white flower phenotypes in carnation were identified. These genes encoded enzymes involved in anthocyanin synthesis, namely, flavanone 3-hydroxylase (F3H) and dihydroflavonol 4-reductase (DFR), and showed reduced expression in the white flower phenotypes.”

The news correspondents obtained a quote from the research from the Tokyo University of Agriculture and Technology, “Here, we identify another candidate gene for white phenotype in carnation flowers using an RNA-seq analysis followed by RT-PCR. This candidate gene encodes a transcriptional regulatory factor of the basic helix-loop-helix (bHLH) type. In the cultivar examined here, both and genes produced active enzyme proteins; however, expression of and of genes for enzymes involved in the downstream anthocyanin synthetic pathway from DFR was repressed in the absence of expression. Occasionally, flowers of the white flowered cultivar used here have red speckles and stripes on the white petals. We found that expression of occurred in these red petal segments and induced expression of and the following downstream enzymes.”

According to the news reporters, the research concluded: “Our results indicate that a member of the superfamily is another gene involved in anthocyanin synthesis in addition to structural genes encoding enzymes.”

For more information on this research see: Repressed expression of a gene for a basic helix-loop-helix protein causes a white flower phenotype in carnation. Breeding Science , 2018;68(1):139-143. Breeding Science can be contacted at: Japanese Soc Breeding, Univ Tokyo, Graduate School Agricultural Life Sciences, Bunkyo-Ku, Tokyo, 113-8657, Japan.

Our news journalists report that additional information may be obtained by contacting A. Totsuka, Dept. of Biotechnology, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan. Additional authors for this research include E. Okamoto, T. Miyahara, T. Kouno, E.A. Cano, N. Sasaki, A. Watanabe, K. Tasaki, M. Nishihara and Y. Ozeki.

The direct object identifier (DOI) for that additional information is: https://doi.org/10.1270/jsbbs.17072. This DOI is a link to an online electronic document that is either free or for purchase, and can be your direct source for a journal article and its citation.

Publisher contact information for the journal Breeding Science is: Japanese Soc Breeding, Univ Tokyo, Graduate School Agricultural Life Sciences, Bunkyo-Ku, Tokyo, 113-8657, Japan.

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2018, NewsRx LLC

CITATION: (2018-05-08), Researchers at Tokyo University of Agriculture and Technology Report Findings in Biological Pigments (Repressed expression of a gene for a basic helix-loop-helix protein causes a white flower phenotype in carnation), Life Science Weekly, 600, ISSN: 1552-2474, BUTTER® ID: 015612939

From the newsletter Life Science Weekly.
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