Overexpression of Tomato Gene Impacts Agronomic Traits via Regulation of Gibberellin and Auxin HomeostasisNovember 9, 2016
In Arabidopsis, the miR171-GRAS module is known as a key player in meristem maintenance. However, its role in tomato (Solanum lycopersicum) remains a mystery. To study its role, Chongqing University researchers, led by Wei Huang, generated three types of transgenic tomato plants: plants underexpressing SlGRAS24, plants overexpressing SlGRAS24, and plants overexpressing Sly-miR171.
Plants overexpressing SlGRAS24 (SlGRAS24-OE) had pleiotropic phenotypes associated with multiple agronomic traits including plant height, flowering time, leaf architecture, lateral branch number, root length, fruit set and development. GA/auxin-related genes in SlGRAS24-OE seedlings were also downregulated and had altered responsiveness to indole acetic acid or gibberellic acid application. During anthesis, transcriptome analysis altered the expression of genes involved in pollen development and hormone signaling, leading to compromised fruit set and development.
These results demonstrate that SlGRAS24 participates in developmental processes by modulating gibberellin and auxin signalling.
For more information, read the full article in Plant Biotechnology Journal.
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
- Gene Network Controls Number of Flowers and Fruits During Critical Growth Window in Plants
- Study Reveals Public Perceptions of Genetically Engineered Nutraceuticals
- Scientists Identify Molecular Conductors that Help Plants Respond to Drought
- Science Education Highlighted in World Life Science Conference
- Japanese Researchers Decode Japanese Morning Glory Genome
- USDA Releases Updates on Agri-biotech in Italy and France
- Plant Roots See Light in the Dark
- Rothamsted Research Submits Application to Conduct GM Wheat Field Trial
- Survey Shows Two Thirds of Public Supports GM Crops
- ZmCCT-associated QTL Regulates Flowering and Stress Responses under Long-Day Conditions
- Overexpression of Tomato Gene Impacts Agronomic Traits via Regulation of Gibberellin and Auxin Homeostasis
Beyond Crop Biotech
- Fungus Genome Assembled Using Nanopore-Generated Reads
- CRISPR-Cas9-mediated Mutagenesis in Physcomitrella patens
- BIO Asia International Conference
- TALEN-mediated Mutagenesis of COMT in Sugarcane Improves Cell Wall Decomposition for Ethanol Production
Read the latest:
- Biotech Updates (November 29, 2023)
- Gene Editing Supplement (November 29, 2023)
- Gene Drive Supplement (February 22, 2023)
Subscribe to BU: