ArticlePlant physiology2009
Involvement of HbPIP2;1 and HbTIP1;1 aquaporins in ethylene stimulation of latex yield through regulation of water exchanges between inner liber and latex cells in Hevea brasiliensis.
Article in Plant physiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.
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Who cites it
40 citing papers in PubMed, 106 citations in OpenAlex.
- Tapping-Induced Oxidative Stress Is Associated with Hev b6 Allergen Regulation inInternational journal of molecular sciences · 2026Article
- Ethylene-Enhanced Latex Proteome Is Involved in Stimulation of Natural Rubber Production in the Hevea Rubber Tree.Molecular & cellular proteomics : MCP · 2026Article
- Transcriptomic response analysis of rubber tree saplings to water-deficit stress at single-cell resolution.Communications biology · 2025Article
- The haplotype-resolved telomere-to-telomere genome and OMICS analyses reveal genetic responses to tapping in rubber tree.Nature communications · 2025Article
- Recent advances in understanding the regulation of plant secondary metabolite biosynthesis by ethylene-mediated pathways.Physiology and molecular biology of plants : an international journal of functional plant biology · 2024Review
- Integrative analysis of transcriptome and metabolome reveals how ethylene increases natural rubber yield inFrontiers in plant science · 2024Article
- Transcriptome analysis of Pará rubber tree (H. brasiliensis) seedlings under ethylene stimulation.BMC plant biology · 2021Article
- Ethylene enhances root water transport and aquaporin expression in trembling aspen (Populus tremuloides) exposed to root hypoxia.BMC plant biology · 2021Article
- Identification and Characterization of Glycoproteins and Their Responsive Patterns upon Ethylene Stimulation in the Rubber Latex.International journal of molecular sciences · 2020Article
- Proteomic Landscape Has Revealed Small Rubber Particles Are Crucial Rubber Biosynthetic Machines for Ethylene-Stimulation in Natural Rubber Production.International journal of molecular sciences · 2019Article
- Identification and characterization of the MADS-box genes highly expressed in the laticifer cells of Hevea brasiliensis.Scientific reports · 2019Article
- Leaf-Derived Jasmonate Mediates Water Uptake from Hydrated Cotton Roots under Partial Root-Zone Irrigation.Plant physiology · 2019Article
- Calcium-Dependent Protein Kinase Family Genes Involved in Ethylene-Induced Natural Rubber Production in Different Hevea brasiliensis Cultivars.International journal of molecular sciences · 2018Article
- Identification of JAZ-interacting MYC transcription factors involved in latex drainage in Hevea brasiliensis.Scientific reports · 2018Article
- Acyl-CoA-binding protein family members in laticifers are possibly involved in lipid and latex metabolism of Hevea brasiliensis (the Para rubber tree).BMC genomics · 2018Article
- Heat and Drought Stresses in Crops and Approaches for Their Mitigation.Frontiers in chemistry · 2018Review
- Physiological and Proteomic Analyses of Molybdenum- and Ethylene-Responsive Mechanisms in Rubber Latex.Frontiers in plant science · 2018Article
- Ethylene sensitivity and relative air humidity regulate root hydraulic properties in tomato plants.Planta · 2017Article
- Identification and characterization of the abscisic acid (ABA) receptor gene family and its expression in response to hormones in the rubber tree.Scientific reports · 2017Article
- Transcript Profiling ofFrontiers in plant science · 2017Article
Corrections and comments
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Authors and funding
8 authors at 4 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Natural rubber is synthesized in specialized articulated cells (laticifers) located in the inner liber of Hevea brasiliensis. Upon bark tapping, the laticifer cytoplasm (latex) is expelled due to liber tissue turgor pressure. In mature virgin (untapped) trees, short-term kinetic studies confirmed that ethylene, the rubber yield stimulant used worldwide, increased latex yield, with a concomitant decrease in latex total solid content, probably through water influx in the laticifers. As the mature laticifers are devoid of plasmodesmata, the rapid water exchanges with surrounding liber cells probably occur via the aquaporin pathway. Two full-length aquaporin cDNAs (HbPIP2;1 and HbTIP1;1, for plasma membrane intrinsic protein and tonoplast intrinsic protein, respectively) were cloned and characterized. The higher efficiency of HbPIP2;1 than HbTIP1;1 in increasing plasmalemma water conductance was verified in Xenopus laevis oocytes. HbPIP2;1 was insensitive to HgCl(2). In situ hybridization demonstrated that HbPIP2;1 was expressed in all liber tissues in the young stem, including the laticifers. HbPIP2;1 was up-regulated in both liber tissues and laticifers, whereas HbTIP1;1 was down-regulated in liber tissues but up-regulated in laticifers in response to bark Ethrel treatment. Ethylene-induced HbPIP2;1 up-regulation was confirmed by western-blot analysis. The promoter sequences of both genes were cloned and found to harbor, among many others, ethylene-responsive and other chemical-responsive (auxin, copper, and sulfur) elements known to increase latex yield. Increase in latex yield in response to ethylene was emphasized to be linked with water circulation between the laticifers and their surrounding tissues as well as with the probable maintenance of liber tissue turgor, which together favor prolongation of latex flow.
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