ArticleScience China. Life sciences2024
The light and hypoxia induced gene ZmPORB1 determines tocopherol content in the maize kernel.
Article in Science China. Life sciences, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 11 papers.
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11 citing papers in PubMed, 15 citations in OpenAlex.
- Comparative metabolomic analysis of leaves and kernels in wild type andFood chemistry. Molecular sciences · 2026Article
- Gamma-selinene synthase catalyzes the first step of dihydroagarofuran sesquiterpene alkaloid biosynthesis in Tripterygium.Science China. Life sciences · 2025Article
- Decades' progress and prospects on maize functional genomics and molecular breeding.Science China. Life sciences · 2025Review
- Multivariate analysis of regional variations in quality, safety, and flavor of commercial fragrant rapeseed oils in China.Food chemistry: X · 2025Article
- Survey of tocopherol and the associated genetic loci in wheat grain.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2025Review
- Vitamin E in Plants: Biosynthesis Pathways, Biofortification Strategies, and Regulatory Dynamics.International journal of molecular sciences · 2025Review
- Total tocopherol levels in maize grain depend on chlorophyll biosynthesis within the embryo.BMC plant biology · 2025Article
- Precise engineering of gene expression by editing plasticity.Genome biology · 2025Article
- Overexpression of ZmSPS2 increases α/γ-tocopherol ratio to improve maize nutritional quality.Plant biotechnology journal · 2025Article
- Dynamic identification of candidate genes associated with higher tocopherol biosynthesis inFrontiers in plant science · 2025Article
- Heterologous Expression of SunflowerPlants (Basel, Switzerland) · 2024Article
Corrections and comments
- Erratum issued
Authors and funding
14 authors at 9 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Tocopherol is an important lipid-soluble antioxidant beneficial for both human health and plant growth. Here, we fine mapped a major QTL-qVE1 affecting γ-tocopherol content in maize kernel, positionally cloned and confirmed the underlying gene ZmPORB1 (por1), as a protochlorophyllide oxidoreductase. A 13.7 kb insertion reduced the tocopherol and chlorophyll content, and the photosynthetic activity by repressing ZmPORB1 expression in embryos of NIL-K22, but did not affect the levels of the tocopherol precursors HGA (homogentisic acid) and PMP (phytyl monophosphate). Furthermore, ZmPORB1 is inducible by low oxygen and light, thereby involved in the hypoxia response in developing embryos. Concurrent with natural hypoxia in embryos, the redox state has been changed with NO increasing and H
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