Transcription Factor JUNGBRUNNEN1 Enhances Drought Tolerance in TomatoAugust 9, 2017
Drought stress hinders plant growth and crop yield. Transcription factors (TF) are known regulators of transcription reprogramming, and expression of many TF genes including members of the NAC family, is affected by drought. Venkatesh P. Thirumalaikumar from the Max Planck Institute of Molecular Plant Physiology focused on the NAC factor JUNGBRUNNEN1 (JUB1) and its role on drought tolerance in tomato (Solanum lycopersicum).
Expression of tomato JUB1 (SlJUB1) was found to be enhanced by various abiotic stresses, including drought. On the other hand, inhibiting SlJUB1 expression greatly lowered drought tolerance, alongside increases in ion leakage and hydrogen peroxide levels, as well as a decrease in the expression of drought-responsive genes.
Meanwhile, overexpression of AtJUB1 from Arabidopsis thaliana increased drought tolerance in tomato, alongside a higher relative leaf water content during drought and reduced hydrogen peroxide levels. The AtJUB1 protein was previously shown to stimulate expression of DREB2A, a TF involved in drought responses, and of the DELLA genes GAI and RGL1, which promote stress tolerance.
These results show that SlJUB1 protein controls the expression of the tomato orthologs of the DREB2A TF and the DELLA genes. The study revealed JUB1 as a transcriptional regulator of drought tolerance.
For information on this study, read the article in Plant Biotechnology Journal.
The Crop Biotech Update is a weekly newsletter of ISAAA, a not-for-profit organization. The CBU is distributed for free to over 23,000 subscribers worldwide to inform them about the key developments in biosciences, especially in agricultural 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
- Kenya Approves Field Trials of Biotech Corn and Cotton
- Innate® 2nd Gen Potato Receives Government Clearance in Canada
- Genomic Study Shows Maize Adapted to Highlands 4,000 Years Ago
- PH Bureau of Plant Industry Invites Public Comments on Golden Rice
- Turkey Approves Four More Biotech Traits
- EFSA Releases Risk Assessment of New Sequencing Information on GM Soybean Events
- GM Plants Promise Fish Oils Aplenty
- Transcription Factor JUNGBRUNNEN1 Enhances Drought Tolerance in Tomato
- Overexpression of OsNRT2.3b Improves Phosphorus Uptake and Translocation in Rice
Plant Breeding Innovations
- Evaluation of HvPAPhy_a Gene in Barley Using CRISPR-Cas9 and TALENs
- CRISPR-Cas9-mediated Engineering of the γ-Aminobutyric Acid Pathway in Tomato
Beyond Crop Biotech
- Canadian Consumers First to Taste Commercialized GE Salmon
From the BICs
- SINO-Pak Hybrid Rice Research Center Inaugurated at ICCBS
- Science In Real Life: GMOs with the Van Eck Lab
- ISAAA Releases New Pocket K on CRISPR-Cas9
Read the latest:
- Crop Biotech Update (September 21, 2022)
- Genome Editing Supplement (September 21, 2022)
- Gene Drive Supplement (August 31, 2022)
Subscribe to CBU: