ArticlePlant molecular biology2000
Hexose transporters of tomato: molecular cloning, expression analysis and functional characterization.
Article in Plant molecular biology, 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
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Who cites it
21 citing papers in PubMed, 59 citations in OpenAlex.
- A vacuolar invertase geneHorticulture research · 2025Article
- The transcription factors ERF105 and NAC72 regulate expression of a sugar transporter gene and hexose accumulation in grape.The Plant cell · 2024Article
- Sugar delivery at the tomato root and root galls after Meloidogyne incognita infestation.BMC plant biology · 2024Article
- Expression of the wheat multipathogen resistance hexose transporter Lr67res is associated with anion fluxes.Plant physiology · 2023Article
- A 21-bp InDel in the promoter ofHorticulture research · 2023Article
- Article
- The WheatPlant physiology · 2019Article
- Cell Wall Invertase and Sugar Transporters Are Differentially Activated in Tomato Styles and Ovaries During Pollination and Fertilization.Frontiers in plant science · 2019Article
- Genome-Wide Identification, Expression, and Functional Analysis of the Sugar Transporter Gene Family in Cassava (Manihot esculenta).International journal of molecular sciences · 2018Article
- Down-Regulating CsHT1, a Cucumber Pollen-Specific Hexose Transporter, Inhibits Pollen Germination, Tube Growth, and Seed Development.Plant physiology · 2015Article
- From root to fruit: RNA-Seq analysis shows that arbuscular mycorrhizal symbiosis may affect tomato fruit metabolism.BMC genomics · 2014Article
- Review
- Article
- Article
- Increased hexose transport in the roots of tomato plants submitted to prolonged hypoxia.Planta · 2009Article
- Article
- Characterisation and expression of monosaccharide transporters in lupins, Lupinus polyphyllus and L. albus.Journal of plant research · 2007Article
- Molecular cloning and expression analysis of a monosaccharide transporter gene OsMST4 from rice (Oryza sativa L.).Plant molecular biology · 2007Article
- ci21A/Asr1 expression influences glucose accumulation in potato tubers.Plant molecular biology · 2007Article
- Expression of a tomato sugar transporter is increased in leaves of mycorrhizal or Phytophthora parasitica-infected plants.Mycorrhiza · 2005Article
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
A full-length (LeHT2) and two partial (LeHT1 and LeHT3) cDNA clones, encoding hexose transporters, were isolated from tomato (Lycopersicon esculentum) fruit and flower cDNA libraries. Southern blot analysis confirmed the presence of a gene family of hexose transporters in tomato consisting of at least three members. The full-length cDNA (LeHT2) encodes a protein of 523 amino acids, with a calculated molecular mass of 57.6 kDa. The predicted protein has 12 putative membrane-spanning domains and belongs to the Major Facilitator Superfamily of membrane carriers. The three clones encode polypeptides that are homologous to other plant monosaccharide transporters and contain conserved amino acid motifs characteristic of this superfamily. Expression of the three genes in different organs of tomato was investigated by quantitative PCR. LeHT1 and LeHT3 are expressed predominantly in sink tissues, with both genes showing highest expression in young fruit and root tips. LeHT2 is expressed at relatively high levels in source leaves and certain sink tissues such as flowers. LeHT2 was functionally expressed in a hexose transport-deficient mutant (RE700A) of Saccharomyces cerevisiae. LeHT2-dependent transport of glucose in RE700A exhibited properties consistent with the operation of an energy-coupled transporter and probably a H+/hexose symporter. The Km of the symporter for glucose is 45 microM.
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