PtrMYB57 Transcription Factors Negatively Regulate Anthocyanin and Proanthocyanidin Synthesis in Poplar
May 31, 2017 |
Previous studies have identified that R2R3-MYB transcription factors are involved in anthocyanin and proanthocyanidin (PA) biosynthesis in poplar (Populus sp.). Researchers from various universities in China now report the identification and characterization of PtrMYB57. PtrMYB57 was found to encode R2R3 MYB protein localized in the nucleus and is expressed in mature leaves.
Transgenic poplar overexpressing PtrMYB57 exhibited a reduction in anthocyanin and PA accumulation compared to wild types. In contrast, high anthocyanin and PA levels were observed in Ptrmyb57 mutants. Furthermore, assays revealed that the PtrMYB57 transcription factor interacts with bHLH131 (bHLH) and PtrTTG1 (WDR) to form the MBW complex and binds to the flavonoid gene promoters, leading to inhibition of the promoters.
These results suggest that PtrMYB57 negatively regulates anthocyanin and PA biosynthesis in poplar.
For more on this study, read the article in Plant Cell Reports.
|
Biotech Updates is a weekly newsletter of ISAAA, a not-for-profit organization. It is distributed for free to over 22,000 subscribers worldwide to inform them about the key developments in biosciences, especially in biotechnology. Your support will help us in our mission to feed the world with knowledge. You can help by donating as little as $10.
-
See more articles:
-
News from Around the World
- Global Team Led by ICRISAT Re-sequence Pigeonpea Genome
- Journalists in Uganda Urged to Support Passing of Biotech Law through Factual Reporting
- Kenya Biosafety Regulators Commend Malawi's Bt Cotton National Performance Trials
- Two New Proteins Connected to Plant Development Identified
- Draft Genome of Spinach Published by Researchers from US and China
- Research Team Discovers Gene that Impacts Soybean Nodule Development
- Engineered Rice with Adjustable Immune System Shows Resistance to Multiple Diseases at Once
- Japan, A Potential Biotech Sugar Beet Country
- Study Shows Climate Change to Cause 23% Decline in Crop Production by 2050s
-
Research Highlights
- Researchers Study the Effect of Calcareous Soil on Bt Protein Expression and Efficacy in the Field
- CAAS Scientists Develop Herbicide Resistant Cotton with Low Glyphosate Residues
-
Beyond Crop Biotech
- PtrMYB57 Transcription Factors Negatively Regulate Anthocyanin and Proanthocyanidin Synthesis in Poplar
- Plant-Produced Vaccine Candidate for Bluetongue Virus
-
Plant
- CRISPR-mediated Targeted Mutagenesis in Grape
- Simultaneous Targeting of Multiple Gene Homeologs to Alter Oil Production in Camelina
-
Read the latest: - Biotech Updates (September 4, 2024)
- Gene Editing Supplement (August 28, 2024)
- Gene Drive Supplement (February 22, 2023)
-
Subscribe to BU: - Share
- Tweet