ArticleJournal of experimental botany2016
STP10 encodes a high-affinity monosaccharide transporter and is induced under low-glucose conditions in pollen tubes of Arabidopsis.
Article in Journal of experimental botany, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.
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45 citing papers in PubMed, 87 citations in OpenAlex.
- Dodder seedlings benefit from apoplastic nutrition by inducing SWEET15-mediated unloading of sucrose from the host's phloem.The New phytologist · 2026Article
- A two-step mechanism for sugar translocation.Nature structural & molecular biology · 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
- TheHorticulture research · 2025Article
- Identification of sugar transporter MrSTP20 responding to high-salt stress and hexoses induction in apple rootstock (Malus robusta Rehd).BMC genomics · 2025Article
- Harnessing the MYB51/SWEET20 module to increase soybean yield by facilitating sugar supply to sink organs.Plant cell reports · 2025Article
- Comparative analysis of STP6 and STP10 unravels molecular selectivity in sugar transport proteins.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Overexpression of OsSTP1 increases grain yield via enhancing carbohydrate metabolism and transport in rice.Planta · 2024Article
- Soybean hypocotyl elongation is regulated by a MYB33-SWEET11/21-GA2ox8c module involving long-distance sucrose transport.Plant biotechnology journal · 2024Article
- Calmodulin-Domain Protein Kinase PiCDPK1 Interacts with the 14-3-3-like Protein NtGF14 to Modulate Pollen Tube Growth.Plants (Basel, Switzerland) · 2024Article
- A Genome-Wide Association Study Reveals the Genetic Mechanisms of Nutrient Accumulation in Spinach.Genes · 2024Article
- Integrated Multi-Omics Analyses Reveal That Autophagy-Mediated Cellular Metabolism Is Required for the Initiation of Pollen Germination.International journal of molecular sciences · 2023Article
- Effects and Mechanism Analysis of Non-Bagging and Bagging Cultivation on the Growth and Content Change of Specific Substances of Fuji Apple Fruit.Plants (Basel, Switzerland) · 2023Article
- How pollen tubes fight for food: the impact of sucrose carriers and invertases ofFrontiers in plant science · 2023Article
- Integrated bioinformatics, modelling, and gene expression analysis of the putative pentose transporter from Candida tropicalis during xylose fermentation with and without glucose addition.Applied microbiology and biotechnology · 2022Article
- Genome-wide identification of sugar transporter gene family in Brassicaceae crops and an expression analysis in the radish.BMC plant biology · 2022Article
- Hexose transporter SWEET5 confers galactose sensitivity to Arabidopsis pollen germination via a galactokinase.Plant physiology · 2022Article
- The functional analysis of sugar transporter proteins in sugar accumulation and pollen tube growth in pummelo (Frontiers in plant science · 2022Article
- Identification and expression analysis of pineapple sugar transporters reveal their role in the development and environmental response.Frontiers in plant science · 2022Article
- Molecular mechanism of sugar transport in plants unveiled by structures of glucose/HNature plants · 2021Article
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Abstract
Pollen tubes are fast growing, photosynthetically inactive cells. Their energy demand is covered by specific transport proteins in the plasma membrane that mediate the uptake of sugars. Here we report on the functional characterization of AtSTP10, a previously uncharacterized member of the SUGAR TRANSPORT PROTEIN family. Heterologous expression of STP10 cDNA in yeast revealed that the encoded protein catalyses the high-affinity uptake of glucose, galactose and mannose. The transporter is sensitive to uncouplers of transmembrane proton gradients, indicating that the protein acts as a hexose-H(+)symporter. Analyses of STP10 mRNA and STP10 promoter-reporter gene studies revealed a sink-specific expression pattern of STP10 in primordia of lateral roots and in pollen tubes. This restriction to sink organs is mediated by intragenic regions of STP10 qPCR analyses with cDNA of in vitro grown pollen tubes showed that STP10 expression was down-regulated in the presence of 50mM glucose. However, in pollen tubes of glucose-insensitive plants, which lack the glucose sensor hexokinase1 (HXK1), no glucose-induced down-regulation of STP10 expression was detected. A stp10T-DNA insertion line developed normally, which may point towards functional redundancy. The data presented in this paper indicate that a high-affinity glucose uptake system is induced in growing pollen tubes under low glucose conditions and that this regulation may occur through the hexokinase pathway.
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