ArticlePlant, cell & environment2026
Multi-Scale Mechanisms of Zn-Se Antagonism in Wheat After Spray: From Subcellular Sequestration to Transcriptional Regulation.
Article in Plant, cell & environment, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Foliar Zn-Se application is a promising strategy to alleviate human micronutrient deficiencies, yet their interaction during co-application remains unclear. Through field and pot experiments, we investigated Zn-Se antagonism in wheat across organ allocation, subcellular distribution, and transcriptomic regulation. Co-application decreased grain Se concentration while increasing Se allocation to leaves and reversed the positive correlation between grain Se and leaf-to-sheath translocation factor. Zn enhanced Se sequestration in leaf cell walls and soluble fractions. Transcriptomic analysis revealed that altered expression of key genes in related metabolic pathways, including SULTR3;4 and PHT2, leads to Se compartmentalization in leaves and restricts Se transfer to grains and accumulation. Despite antagonism, co-application produced grains meeting Zn and Se Recommended Nutrient Intake, enhanced antioxidant capacity, and posed low ecological risk upon straw return. These results elucidate a mechanistic framework for Zn inhibiting Se remobilization to grains and provide molecular targets for optimizing Zn-Se co-biofortification in wheat.
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