ArticlePlant physiology2022
Hexose transporter SWEET5 confers galactose sensitivity to Arabidopsis pollen germination via a galactokinase.
Article in Plant physiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed, 34 citations in OpenAlex.
- Mutation of BrDAD1 affects flower opening and anther dehiscence by regulating jasmonate-mediated BrMYB108-BrSWEET15 module.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2026Article
- Transcriptomic and Metabolomic Analyses Reveal Mechanisms of Sexual Differentiation and Dimorphism inPlants (Basel, Switzerland) · 2026Article
- Transcriptional Regulation of SWEET15_A01 by MYB44/bHLH3 Modulates Carbon Allocation in Cotton Ovule and Fibre to Affect Seed and Fibre Traits.Plant biotechnology journal · 2026Article
- Non-Target Metabolomics Reveals Changes in Metabolite Profiles in Distant Hybrid Incompatibility BetweenPlants (Basel, Switzerland) · 2025Article
- Genome assembly and population analysis of tetraploid marama bean reveal two distinct genome types.Scientific reports · 2025Article
- Deletion of the sugar importer gene OsSWEET1b accelerates sugar starvation-promoted leaf senescence in rice.Plant physiology · 2024Article
- SWEET family transporters act as water conducting carrier proteins in plants.bioRxiv : the preprint server for biology · 2024Article
- Functional Characterization ofInternational journal of molecular sciences · 2024Article
- Metabolic crosstalk between roots and rhizosphere drives alfalfa decline under continuous cropping.Frontiers in plant science · 2024Article
- Single-cell RNA-seq reveals a link of ovule abortion and sugar transport inFrontiers in plant science · 2024Article
- Physiological implications of SWEETs in plants and their potential applications in improving source-sink relationships for enhanced yield.Plant biotechnology journal · 2023Review
- Genome-Wide Identification, Expression, and Response toInternational journal of molecular sciences · 2023Article
- Transcriptome analysis provides insight into the regulatory mechanisms underlying pollen germination recovery at normal high ambient temperature in wild banana (Frontiers in plant science · 2023Article
- Sucrose rather than GA transported by AtSWEET13 and AtSWEET14 supports pollen fitness at late anther development stages.The New phytologist · 2022Article
- Comparative Metabolic Analysis Reveals a Metabolic Switch in Mature, Hydrated, and Germinated Pollen inFrontiers in plant science · 2022Article
Corrections and comments
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Authors and funding
4 authors at 1 institution in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Galactose is an abundant and essential sugar used for the biosynthesis of many macromolecules in different organisms, including plants. Galactose metabolism is tightly and finely controlled, since excess galactose and its derivatives are inhibitory to plant growth. In Arabidopsis (Arabidopsis thaliana), root growth and pollen germination are strongly inhibited by excess galactose. However, the mechanism of galactose-induced inhibition during pollen germination remains obscure. In this study, we characterized a plasma membrane-localized transporter, Arabidopsis Sugars Will Eventually be Exported Transporter 5, that transports glucose and galactose. SWEET5 protein levels started to accumulate at the tricellular stage of pollen development and peaked in mature pollen, before rapidly declining after pollen germinated. SWEET5 levels are responsible for the dosage-dependent sensitivity to galactose, and galactokinase is essential for these inhibitory effects during pollen germination. However, sugar measurement results indicate that galactose flux dynamics and sugar metabolism, rather than the steady-state galactose level, may explain phenotypic differences between sweet5 and Col-0 in galactose inhibition of pollen germination.
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