ArticlePlant physiology2002
A role for diacylglycerol acyltransferase during leaf senescence.
Article in Plant physiology, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 106 papers.
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Who cites it
106 citing papers in PubMed, 251 citations in OpenAlex.
- Remodeling of leaf lipidome during cold acclimation, de-acclimation, and re-acclimation influences frost tolerance of Festuca arundinacea.Plant & cell physiology · 2026Article
- A hickory diacylglycerol acyltransferase gene coordinates fatty acid metabolism and aluminum tolerance in plants.The New phytologist · 2026Article
- Identification of Endogenous Substances Involved in Sclareol-Induced Chlorophyll Reductions inPlants (Basel, Switzerland) · 2026Article
- Non-specific phospholipase Cs and their potential for crop improvement.Journal of experimental botany · 2026Review
- Deciphering the role of monoacylglycerol lipases (MAGL) under abiotic stress and lipid metabolism in soybean (Glycine max L.).Plant biotechnology journal · 2025Article
- Knock Down ofPlants (Basel, Switzerland) · 2025Article
- A Conserved N-Terminal Di-Arginine Motif Stabilizes Plant DGAT1 and Modulates Lipid Droplet Organization.International journal of molecular sciences · 2025Article
- Powdery mildew induces chloroplast storage lipid formation at the expense of host thylakoids to promote spore production.The Plant cell · 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
- Synergistic mechanisms of DGAT and PDAT in shaping triacylglycerol diversity: evolutionary insights and metabolic engineering strategies.Frontiers in plant science · 2025Review
- Phospholipase-mediated phosphate recycling during plant leaf senescence.Genome biology · 2024Article
- The synthesis of triacylglycerol by diacylglycerol acyltransferases (CsDGAT1A and CsDGAT2D) is essential for tolerance of cucumber's resistance to low-temperature stress.Plant cell reports · 2024Article
- Genome-Wide Analysis of Glycerol-3-Phosphate Acyltransferase (GPAT) Family inInternational journal of molecular sciences · 2023Article
- Identification of gene function based on models capturing natural variability of Arabidopsis thaliana lipid metabolism.Nature communications · 2023Article
- Comparison of plastid proteomes points towards a higher plastidial redox turnover in vascular tissues than in mesophyll cells.Journal of experimental botany · 2023Article
- Dynamic Regulation of Lipid Droplet Biogenesis in Plant Cells and Proteins Involved in the Process.International journal of molecular sciences · 2023Review
- Changes in the content of pollen total lipid and TAG inAoB PLANTS · 2023Article
- Lipid droplets are versatile organelles involved in plant development and plant response to environmental changes.Frontiers in plant science · 2023Review
- Overexpression of plastid lipid-associated protein in marine diatom enhances the xanthophyll synthesis and storage.Frontiers in microbiology · 2023Article
- Diacylglycerol Acyltransferase 3(DGAT3) Is Responsible for the Biosynthesis of Unsaturated Fatty Acids in Vegetative Organs ofInternational journal of molecular sciences · 2022Article
46 more citing papers are in PubMed but not listed here.
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Lipid analysis of rosette leaves from Arabidopsis has revealed an accumulation of triacylglycerol (TAG) with advancing leaf senescence coincident with an increase in the abundance and size of plastoglobuli. The terminal step in the biosynthesis of TAG in Arabidopsis is catalyzed by diacylglycerol acyltransferase 1 (DGAT1; EC 2.3.1.20). When gel blots of RNA isolated from rosette leaves at various stages of development were probed with the Arabidopsis expressed sequence tag clone, E6B2T7, which has been annotated as DGAT1, a steep increase in DGAT1 transcript levels was evident in the senescing leaves coincident with the accumulation of TAG. The increase in DGAT1 transcript correlated temporally with enhanced levels of DGAT1 protein detected immunologically. Two lines of evidence indicated that the TAG of senescing leaves is synthesized in chloroplasts and sequesters fatty acids released from the catabolism of thylakoid galactolipids. First, TAG isolated from senescing leaves proved to be enriched in hexadecatrienoic acid (16:3) and linolenic acid (18:3), which are normally present in thylakoid galactolipids. Second, DGAT1 protein in senescing leaves was found to be associated with chloroplast membranes. These findings collectively indicate that diacylglycerol acyltransferase plays a role in senescence by sequestering fatty acids de-esterified from galactolipids into TAG. This would appear to be an intermediate step in the conversion of thylakoid fatty acids to phloem-mobile sucrose during leaf senescence.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.