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Updated: Jun 28, 2026
12:03
Two-Dimensional Visualization and Quantification of Labile, Inorganic Plant Nutrients and Contaminants in Soil
Published on: September 1, 2020
CvbZIP81 contributes to selenium accumulation by regulating sulfate transports in Cardamine violifolia
Luxin Feng1, Jiarui Zheng1, Sirui Zeng2
1College of Horticulture and Gardening, Yangtze University, Jingzhou, Hubei 434025, China; Hubei Key Laboratory of Spices & Horticultural Plant Germplasm Innovation & Utilization, Yangtze University, Jingzhou, Hubei 434025, China.
Summary
Researchers identified a key transcription factor, CvbZIP81, that enhances selenium uptake and accumulation in the hyperaccumulator plant Cardamine violifolia. This discovery offers insights into plant selenium metabolism and potential for developing high-selenium crops.
Area of Science:
- Plant Biology
- Biochemistry
- Genetics
Background:
- Selenium is an essential micronutrient with antioxidant, immune-boosting, and anticancer properties.
- Cardamine violifolia is a known selenium hyperaccumulator, but the mechanisms of selenium uptake are not fully understood.
Purpose of the Study:
- To investigate the role of bZIP transcription factors in selenium accumulation in Cardamine violifolia.
- To identify specific bZIP genes involved in selenium uptake and accumulation.
Main Methods:
- Phylogenetic analysis of 94 bZIP family members in C. violifolia.
- Promoter analysis to identify cis-acting elements.
- Gene expression and correlation analyses to pinpoint key regulatory genes.
Main Results:
- Identified 94 bZIP family members in C. violifolia, classified into 11 subfamilies.
- Discovered CvbZIP81 as a nuclear-localized transcription factor.
- Demonstrated that CvbZIP81 activates SULTR1;2.1, promoting selenium uptake and accumulation.
Conclusions:
- bZIP transcription factors play a crucial regulatory role in selenium accumulation in C. violifolia.
- CvbZIP81 is a key factor in facilitating selenium uptake by activating SULTR1;2.1.
- Findings provide insights for developing high-selenium cultivars and functional validation of CvbZIP genes.
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