Related Experiment Video
Updated: Jun 28, 2026

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.
Abstract:
Selenium is an essential micronutrient for humans and animals, known for its antioxidant characteristics, regulation of thyroid hormone metabolism, enhancement of immune function, and elevated antiviral and anticancer activities. Cardamine violifolia is a recognized selenium hyperaccumulator; however, the mechanistic basis of selenium uptake and accumulation in this species remains unexplored. In this study, we combined molecular biology, physiology, and bioinformatics approaches to elucidate the role of bZIP transcription factor family in these processes. A total of 94 members of the bZIP family were identified in C. violifolia. Phylogenetic analysis classified these 94 members into 11 distinct subfamilies. Promoter analysis revealed that the promoter regions of these CvbZIP genes are enriched in cis-acting elements associated with stress responses, growth, and development. Through gene expression and correlation analyses, we identified CvbZIP81 as a nuclear-localized transcription factor that promotes selenium accumulation in C. violifolia by transcriptionally activating SULTR1;2.1, thereby facilitating selenium uptake. This study expands the functional network of bZIP transcription factors and reveals their regulatory role in selenium accumulation in C. violifolia, providing foundational insights and candidate targets for the functional validation of CvbZIP genes and the development of high-selenium cultivars.
Related Concept Videos
Sulfur Assimilation
Adaptations that Reduce Water Loss
Responses to Salt Stress
Microbes and the Sulfur Cycle
Key Elements for Plant Nutrition
The Calvin Benson Cycle
