ArticleJournal of experimental botany2018
Metabolomics of laminae and midvein during leaf senescence and source-sink metabolite management in Brassica napus L. leaves.
Article in Journal of experimental botany, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.
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27 citing papers in PubMed, 67 citations in OpenAlex.
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- Genetic Foundation of Leaf Senescence: Insights from Natural and Cultivated Plant Diversity.Plants (Basel, Switzerland) · 2024Review
- A Preliminary Study on the Whole-Plant Regulations of the ShrubMetabolites · 2024Article
- Low Nitrogen Input Mitigates Quantitative but Not Qualitative Reconfiguration of Leaf Primary Metabolism inPlants (Basel, Switzerland) · 2024Article
- Effects of Vine Water Status on Malate Metabolism and γ-Aminobutyric Acid (GABA) Pathway-Related Amino Acids in Marselan (Foods (Basel, Switzerland) · 2023Article
- Analysis of companion cell and phloem metabolism using a transcriptome-guided model of Arabidopsis metabolism.Plant physiology · 2023Article
- Research Progress in High-Efficiency Utilization of Nitrogen in Rapeseed.International journal of molecular sciences · 2023Review
- Antagonistic Effect of Sucrose Availability and Auxin onFrontiers in plant science · 2022Article
- Genome-wide identification of Brassicaceae B-BOX genes and molecular characterization of their transcriptional responses to various nutrient stresses in allotetraploid rapeseed.BMC plant biology · 2021Article
- Stem girdling affects the onset of autumn senescence in aspen in interaction with metabolic signals.Physiologia plantarum · 2021Article
- Genome-scale identification ofPeerJ · 2021Article
- Leaf Phenological Stages of Winter Oilseed Rape (Frontiers in plant science · 2021Article
- Responses of mature symbiotic nodules to the whole-plant systemic nitrogen signaling.Journal of experimental botany · 2020Article
- Sink/Source Balance of Leaves Influences Amino Acid Pools and Their Associated Metabolic Fluxes in Winter Oilseed Rape (Metabolites · 2020Article
- Genome-wide identification of the amino acid permease genes and molecular characterization of their transcriptional responses to various nutrient stresses in allotetraploid rapeseed.BMC plant biology · 2020Article
- Leaf status and environmental signals jointly regulate proline metabolism in winter oilseed rape.Journal of experimental botany · 2020Article
- Proline oxidation fuels mitochondrial respiration during dark-induced leaf senescence in Arabidopsis thaliana.Journal of experimental botany · 2019Article
- Asparagine Synthesis During Tobacco Leaf Curing.Plants (Basel, Switzerland) · 2019Article
- Multi-omics Analysis Reveals Sequential Roles for ABA during Seed Maturation.Plant physiology · 2019Article
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Leaf senescence is a long developmental process important for nutrient management and for source to sink remobilization. Constituents of the mesophyll cells are progressively degraded to provide nutrients to the rest of the plant. Up to now, studies on leaf senescence have not paid much attention to the role of the different leaf tissues. In the present study, we dissected leaf laminae from the midvein to perform metabolite profiling. The laminae mesophyll cells are the source of nutrients, and in C3 plants they contain Rubisco as the most important nitrogen storage pool. Veins, rich in vasculature, are the place where all the nutrients are translocated, and sometimes interconverted, before being exported through the phloem or the xylem. The different metabolic changes we observed in laminae and midvein with ageing support the idea that the senescence programme in these two tissues is different. Important accumulations of metabolites in the midvein suggest that nutrient translocations from source leaves to sinks are mainly controlled at this level. Carbon and nitrogen long-distance molecules such as fructose, glucose, aspartate, and asparagine were more abundant in the midvein than in laminae. In contrast, sucrose, glutamate, and aspartate were more abundant in laminae. The concentrations of tricarboxylic acid (TCA) compounds were also lower in the midvein than in laminae. Since nitrogen remobilization increased under low nitrate supply, plants were grown under two nitrate concentrations. The results revealed that the senescence-related differences were mostly similar under low and high nitrate conditions except for some pathways such as the TCA cycle.
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