ArticlePlant physiology2007
Differential regulation of sorbitol and sucrose loading into the phloem of Plantago major in response to salt stress.
Article in Plant physiology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.
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Who cites it
47 citing papers in PubMed, 133 citations in OpenAlex.
- Responses of Processing Tomato Genotypes Under Varying NaCl Stress Levels and Durations.Plants (Basel, Switzerland) · 2026Article
- Go with the Phloem: A Review of the Methods to Collect Plant Phloem Tissue.Methods in molecular biology (Clifton, N.J.) · 2026Review
- OsSSID6 Negatively Regulates Salt Stress Tolerance in Rice (Oryza Sativa L.) via Metabolic Pathways and ROS Scavenging.Rice (New York, N.Y.) · 2025Article
- Decoding Long-Distance Communication Under Mineral Stress: Advances in Vascular Signalling and Molecular Tools for Plant Resilience.Plant, cell & environment · 2025Review
- Plantago species are emerging model organisms for functional genomics and stress biology.Plant cell reports · 2025Review
- Salinity survival: molecular mechanisms and adaptive strategies in plants.Frontiers in plant science · 2025Review
- Analysis of metabolites change from reflorescence buds of 'Cuiguan' pear (Frontiers in plant science · 2025Article
- Advancements in plant transformation: from traditional methods to cutting-edge techniques and emerging model species.Plant cell reports · 2024Review
- Symplasmic phloem loading and subcellular transport in storage roots are key factors for carbon allocation in cassava.Plant physiology · 2024Article
- Transcriptome Analysis for Salt-Responsive Genes in Two Different Alfalfa (Plants (Basel, Switzerland) · 2024Article
- Plasma membrane-localized hexose transporter OsSWEET1b, affects sugar metabolism and leaf senescence.Plant cell reports · 2024Article
- How Plants Tolerate Salt Stress.Current issues in molecular biology · 2023Review
- Exogenous Sorbitol Application Confers Drought Tolerance to Maize Seedlings through Up-Regulating Antioxidant System and Endogenous Sorbitol Biosynthesis.Plants (Basel, Switzerland) · 2023Article
- Proteomic and metabolomic analyses uncover integrative mechanisms inFrontiers in plant science · 2023Article
- Article
- Versatile roles of sorbitol in higher plants: luxury resource, effective defender or something else?Planta · 2022Review
- Mobile forms of carbon in trees: metabolism and transport.Tree physiology · 2022Review
- Effects of Arbuscular Mycorrhiza on Primary Metabolites in Phloem Exudates ofInternational journal of molecular sciences · 2021Article
- Strategies to Apply Water-Deficit Stress: Similarities and Disparities at the Whole Plant Metabolism Level inInternational journal of molecular sciences · 2021Article
- Unraveling the Roles of Vascular Proteins Using Proteomics.Molecules (Basel, Switzerland) · 2021Review
Corrections and comments
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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
Several plant families generate polyols, the reduced form of monosaccharides, as one of their primary photosynthetic products. Together with sucrose (Suc) or raffinose, these polyols are used for long-distance allocation of photosynthetically fixed carbon in the phloem. Many species from these families accumulate these polyols under salt or drought stress, and the underlying regulation of polyol biosynthetic or oxidizing enzymes has been studied in detail. Here, we present results on the differential regulation of genes that encode transport proteins involved in phloem loading with sorbitol and Suc under salt stress. In the Suc- and sorbitol-translocating species Plantago major, the mRNA levels of the vascular sorbitol transporters PmPLT1 and PmPLT2 are rapidly up-regulated in response to salt treatment. In contrast, mRNA levels for the phloem Suc transporter PmSUC2 stay constant during the initial phase of salt treatment and are down-regulated after 24 h of salt stress. This adaptation in phloem loading is paralleled by a down-regulation of mRNA levels for a predicted sorbitol dehydrogenase (PmSDH1) in the entire leaf and of mRNA levels for a predicted Suc phosphate synthase (PmSPS1) in the vasculature. Analyses of Suc and sorbitol concentrations in leaves, in enriched vascular tissue, and in phloem exudates of detached leaves revealed an accumulation of sorbitol and, to a lesser extent, of Suc within the leaves of salt-stressed plants, a reduced rate of phloem sap exudation after NaCl treatment, and an increased sorbitol-to-Suc ratio within the phloem sap. Thus, the up-regulation of PmPLT1 and PmPLT2 expression upon salt stress results in a preferred loading of sorbitol into the phloem of P. major.
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