ZmCCT-associated QTL Regulates Flowering and Stress Responses under Long-Day ConditionsNovember 9, 2016
Photoperiodism is the ability of plants to measure day length, enabling plants to coordinate internal activities with external changes to ensure normal growth. The ZmCCT gene was previously identified as a homolog of the rice photoperiod response regulator Ghd7, and associated with the major QTL responsible for Gibberella stalk rot resistance in maize. However, its regulation has not been studied.
Henan Agricultural University researchers mapped the ZmCCT-associated QTL (ZmCCT-AQ). The trascriptomes of a photoperiod-insensitive inbred line Huangzao4 (HZ4) and its near-isogenic line (HZ4-NIL), containing ZmCCT-AQ, were sequenced and compared. Analysis found that a set of genes exhibited higher basal expression levels in HZ4-NIL than in HZ4.
These upregulated genes were associated with responses to circadian rhythm changes and biotic and abiotic stresses. The HZ4-NIL exhibited enhanced drought and heat tolerance, and stronger disease resistance compared to HZ4. Further analysis suggests that ZmCCT and ZmCCA1, one of the circadian clock core genes, are important nodes linking photoperiod to stress tolerance responses under long day conditions.
For more on this study, read the article in BMC Plant Biotechnology.
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: