ArticlePlant physiology2015
Down-Regulating CsHT1, a Cucumber Pollen-Specific Hexose Transporter, Inhibits Pollen Germination, Tube Growth, and Seed Development.
Article in Plant physiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.
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Who cites it
42 citing papers in PubMed, 76 citations in OpenAlex.
- Loss of the plastidial hexokinase CsHXK3 triggers metabolic starvation and ROS imbalance leading to pollen abortion in cucumber.The Plant journal : for cell and molecular biology · 2026Article
- Exploring the jasmonic acid signaling pathway: the role ofHorticulture research · 2026Article
- Jasmonate regulates male sterility in cucumber.aBIOTECH · 2026Article
- FvMAPK6-Mediated FvMYB44s/FvSWEET1 Dual-Layer Regulation Modulates Sugar Accumulation in Strawberry Fruit, With FvSPS3 Enabling Quality-Yield Balance.Plant biotechnology journal · 2026Article
- Optimizing gamma irradiation for genotype-specific enhancement of pollen performance and haploid induction in cucumber (Cucumis sativus L.).Scientific reports · 2026Article
- The CtrCBL1/CtrCIPK6 Complex of Citrus Phosphorylates CtrBBX32 to Regulate CtrSTP1-Mediated Sugar Accumulation and Cold Tolerance.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- Floral Characteristics and Reproductive Biology in Brazilian Melon Accessions: Insights from Commercial and Exotic Varieties.Plants (Basel, Switzerland) · 2025Article
- Mutations in a Leucine-Rich Repeat Receptor-Like Kinase gene result in male sterility and reduction in the number and size of fruit warts in cucumber (Cucumis sativus L.).TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2024Article
- Sugar delivery at the tomato root and root galls after Meloidogyne incognita infestation.BMC plant biology · 2024Article
- Functional Characterization ofInternational journal of molecular sciences · 2024Article
- Cucumber malate decarboxylase, CsNADP-ME2, functions in the balance of carbon and amino acid metabolism in fruit.Horticulture research · 2023Article
- Transcriptomic Insight into the Pollen Tube Growth ofPlants (Basel, Switzerland) · 2023Article
- Phloem unloading in cultivated melon fruits follows an apoplasmic pathway during enlargement and ripening.Horticulture research · 2023Article
- Sugar transporter ZmSWEET1b is responsible for assimilate allocation and salt stress response in maize.Functional & integrative genomics · 2023Article
- Pollen tube emergence is mediated by ovary-expressed ALCATRAZ in cucumber.Nature communications · 2023Article
- Genic male and female sterility in vegetable crops.Horticulture research · 2023Article
- The genetic architecture of trait covariation inFrontiers in plant science · 2023Article
- SPATULA and ALCATRAZ confer female sterility and fruit cavity via mediating pistil development in cucumber.Plant physiology · 2022Article
- Hexose translocation mediated by SlSWEET5b is required for pollen maturation in Solanum lycopersicum.Plant physiology · 2022Article
- Hexose transporter SWEET5 confers galactose sensitivity to Arabidopsis pollen germination via a galactokinase.Plant physiology · 2022Article
Corrections and comments
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Efficient sugar transport is needed to support the high metabolic activity of pollen tubes as they grow through the pistil. Failure of transport results in male sterility. Although sucrose transporters have been shown to play a role in pollen tube development, the role of hexoses and hexose transporters is not as well established. The pollen of some species can grow in vitro on hexose as well as on sucrose, but knockouts of individual hexose transporters have not been shown to impair fertilization, possibly due to transporter redundancy. Here, the functions of CsHT1, a hexose transporter from cucumber (Cucumis sativus), are studied using a combination of heterologous expression in yeast (Saccharomyces cerevisiae), histochemical and immunohistochemical localization, and reverse genetics. The results indicate that CsHT1 is a plasma membrane-localized hexose transporter with high affinity for glucose, exclusively transcribed in pollen development and expressed both at the levels of transcription and translation during pollen grain germination and pollen tube growth. Overexpression of CsHT1 in cucumber pollen results in a higher pollen germination ratio and longer pollen tube growth than wild-type pollen in glucose- or galactose-containing medium. By contrast, antisense suppression of CsHT1 leads to inhibition of pollen germination and pollen tube elongation in the same medium and results in a decrease of seed number per fruit and seed size when antisense transgenic pollen is used to fertilize wild-type or transgenic cucumber plants. The important role of CsHT1 in pollen germination, pollen tube growth, and seed development is discussed.
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