ArticleJournal of experimental botany2012
Identification of lipids and lipid-binding proteins in phloem exudates from Arabidopsis thaliana.
Article in Journal of experimental botany, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers.
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Who cites it
54 citing papers in PubMed.
- Excess nitric oxide alters cellular pH to restrict salicylic acid movement and systemic immunity.Science advances · 2026Article
- Analyzing Plant Low-Molecular-Weight Polar Metabolites: A GC-MS Approach.Plants (Basel, Switzerland) · 2026Review
- Go with the Phloem: A Review of the Methods to Collect Plant Phloem Tissue.Methods in molecular biology (Clifton, N.J.) · 2026Review
- Decoding Long-Distance Communication Under Mineral Stress: Advances in Vascular Signalling and Molecular Tools for Plant Resilience.Plant, cell & environment · 2025Review
- Review
- Root-based inorganic carbon uptake increases the growth ofFrontiers in plant science · 2024Article
- Spatiotemporal metabolic responses to water deficit stress in distinct leaf cell-types of poplar.Frontiers in plant science · 2024Article
- Phloem-MobilePlants (Basel, Switzerland) · 2023Article
- Phloem Sap Composition: What Have We Learnt from Metabolomics?International journal of molecular sciences · 2023Review
- Effects of aMembranes · 2023Article
- Identification of new potential molecular actors related to fiber quality in flax through Omics.Frontiers in plant science · 2023Article
- Local problems need global solutions: The metabolic needs of regenerating organisms.Wound repair and regeneration : official publication of the Wound Healing Society [and] the European Tissue Repair Society · 2022Review
- Systemic silencing of an endogenous plant gene by two classes of mobile 21-nucleotide artificial small RNAs.The Plant journal : for cell and molecular biology · 2022Article
- Effects of Salinity and Abscisic Acid on Lipid Transfer Protein Accumulation, Suberin Deposition and Hydraulic Conductance in Pea Roots.Membranes · 2021Article
- Fatty acid export protein BnFAX6 functions in lipid synthesis and axillary bud growth in Brassica napus.Plant physiology · 2021Article
- HASTY, the Arabidopsis EXPORTIN5 ortholog, regulates cell-to-cell and vascular microRNA movement.The EMBO journal · 2021Article
- Collection and Analysis of Phloem Lipids.Methods in molecular biology (Clifton, N.J.) · 2021Article
- Combating Dual Challenges in Maize Under High Planting Density: Stem Lodging and Kernel Abortion.Frontiers in plant science · 2021Review
- Phloem Sap Proteins Are Part of a Core Stress Responsive Proteome Involved in Drought Stress Adjustment.Frontiers in plant science · 2021Article
- The interplay of phloem-mobile signals in plant development and stress response.Bioscience reports · 2020Review
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The phloem plays a crucial role in assimilate and nutrient transport, pathogen response, and plant growth and development. Yet, few species have yielded pure phloem exudate and, if proteins need to be analysed, those species may not have sequenced genomes, making identification difficult. The enrichment of Arabidopsis thaliana phloem exudate in amounts large enough to allow for metabolite and protein analysis is described. Using this method, it was possible to identify 65 proteins present in the Arabidopsis phloem exudate. The majority of these proteins could be grouped by response to pathogens, stress, or hormones, carbon metabolism, protein interaction, modification, and turnover, and transcription factors. It was also possible to detect 11 proteins that play a role in lipid/fatty acid metabolism (aspartic protease, putative 3-β-hydroxysteroid dehydrogenase, UDP-sulphoquinovose synthase/SQD1, lipase, PIG-P-like protein: phosphatidylinositol-N-acetylglucosaminyltransferase), storage (glycine-rich protein), binding (annexin, lipid-associated family protein, GRP17/oleosin), and/or signalling (annexin, putative lipase, PIG-P-like protein). Along with putative lipid-binding proteins, several lipids and fatty acids could be identified. Only a few examples exist of lipids (jasmonic acid, oxylipins) or lipid-binding proteins (DIR1, acyl-CoA-binding protein) in the phloem. Finding hydrophobic compounds in an aqueous environment is not without precedence in biological systems: human blood contains a variety of lipids, many of which play a significant role in human health. In blood, lipids are transported while bound to proteins. The present findings of lipids and lipid-binding proteins in phloem exudates suggest that a similar long-distance lipid signalling exists in plants and may play an important role in plant growth and development.
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