ArticlePlant physiology2011
ABI4 activates DGAT1 expression in Arabidopsis seedlings during nitrogen deficiency.
Article in Plant physiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers.
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61 citing papers in PubMed, 139 citations in OpenAlex.
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- Triacylglycerols at the crossroads of lipid remodeling and stress tolerance in plants.Plant cell reports · 2026Review
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- Soybean MYB transcription factors GmMYB73 and GmMYB85 regulate lipid biosynthesis through lncRNA-mediated mechanisms.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2026Article
- The transcription factor CeWRI3 functions in TAG accumulation through activating CeOLE2 in Cyperus esculentus.Plant cell reports · 2025Article
- Inducible expression of DEFECTIVE IN ANTHER DEHISCENCE 1 enhances triacylglycerol accumulation and lipid droplet formation in vegetative tissues.The Plant journal : for cell and molecular biology · 2025Article
- Lipid droplets in plants: turnover and stress responses.Frontiers in plant science · 2025Review
- The first intron and promoter of Arabidopsis DIACYLGLYCEROL ACYLTRANSFERASE 1 exert synergistic effects on pollen and embryo lipid accumulation.The New phytologist · 2025Article
- Comparative transcriptomic analysis provides insights into the genetic networks regulating oil differential production in oil crops.BMC biology · 2024Article
- Triphosphate Tunnel Metalloenzyme 2 Acts as a Downstream Factor of ABI4 in ABA-Mediated Seed Germination.International journal of molecular sciences · 2023Article
- Microbiome differences in sugarcane and metabolically engineered oilcane accessions and their implications for bioenergy production.Biotechnology for biofuels and bioproducts · 2023Article
- Advances in Plant Lipid Metabolism Responses to Phosphate Scarcity.Plants (Basel, Switzerland) · 2022Review
- Transcriptome analysis reveals cell cycle-related transcripts as key determinants of varietal differences in seed size of Brassica juncea.Scientific reports · 2022Article
- EfABI4 Transcription Factor Is Involved in the Regulation of Starch Biosynthesis inInternational journal of molecular sciences · 2022Article
- Genome-Wide Characterization of DGATs and Their Expression Diversity Analysis in Response to Abiotic Stresses inPlants (Basel, Switzerland) · 2022Article
- Genetic dissection of seed yield and yield-related traits inMolecular breeding : new strategies in plant improvement · 2022Article
- Article
- Defective cytokinin signaling reprograms lipid and flavonoid gene-to-metabolite networks to mitigate high salinity inProceedings of the National Academy of Sciences of the United States of America · 2021Article
- Toward identification of a putative candidate gene for nutrient mineral accumulation in wheat grains for human nutrition purposes.Journal of experimental botany · 2021Article
- Nitrate Regulates Maize Root Transcriptome through Nitric Oxide Dependent and Independent Mechanisms.International journal of molecular sciences · 2021Article
1 more citing papers are in PubMed but not listed here.
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Authors and funding
4 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
Triacylglycerol (TAG) is the major seed storage lipid and is important for biofuel and other renewable chemical uses. Acyl-coenzyme A:diacylglycerol acyltransferase1 (DGAT1) is the rate-limiting enzyme in the TAG biosynthesis pathway, but the mechanism of its regulation is unknown. Here, we show that TAG accumulation in Arabidopsis (Arabidopsis thaliana) seedlings increased significantly during nitrogen deprivation (0.1 mm nitrogen) with concomitant induction of genes involved in TAG biosynthesis and accumulation, such as DGAT1 and OLEOSIN1. Nitrogen-deficient seedlings were used to determine the key factors contributing to ectopic TAG accumulation in vegetative tissues. Under low-nitrogen conditions, the phytohormone abscisic acid plays a crucial role in promoting TAG accumulation in Arabidopsis seedlings. Yeast one-hybrid and electrophoretic mobility shift assays demonstrated that ABSCISIC ACID INSENSITIVE4 (ABI4), an important transcriptional factor in the abscisic acid signaling pathway, bound directly to the CE1-like elements (CACCG) present in DGAT1 promoters. Genetic studies also revealed that TAG accumulation and DGAT1 expression were reduced in the abi4 mutant. Taken together, our results indicate that abscisic acid signaling is part of the regulatory machinery governing TAG ectopic accumulation and that ABI4 is essential for the activation of DGAT1 in Arabidopsis seedlings during nitrogen deficiency.
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