ArticlePlant physiology1997
Antisense expression of the peptide transport gene AtPTR2-B delays flowering and arrests seed development in transgenic Arabidopsis plants.
Article in Plant physiology, 1997. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.
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26 citing papers in PubMed, 67 citations in OpenAlex.
- Genome and transcriptome analyses reveal parallel altitude adaptation in Chenopodium.Genome biology · 2026Article
- Marker-trait associations for ideotypic traits in pigeonpea (Cajanus cajan L.).Molecular biology reports · 2026Article
- Transcriptome Shock in Developing Embryos of aInternational journal of molecular sciences · 2023Article
- Peptide transporter2 (PTR2) enhances water uptake during early seed germination in Arabidopsis thaliana.Plant molecular biology · 2020Article
- Genetic and Molecular Regulation of Seed Storage Proteins (SSPs) to Improve Protein Nutritional Value of Oilseed Rape (Frontiers in plant science · 2018Article
- The Rice Peptide TransporterFrontiers in plant science · 2017Article
- Metabolic and transcriptional transitions in barley glumes reveal a role as transitory resource buffers during endosperm filling.Journal of experimental botany · 2015Article
- Evolutionary classification of ammonium, nitrate, and peptide transporters in land plants.BMC evolutionary biology · 2014Article
- Article
- Correlation of aquaporins and transmembrane solute transporters revealed by genome-wide analysis in developing maize leaf.Comparative and functional genomics · 2012Article
- Functional properties of the Arabidopsis peptide transporters AtPTR1 and AtPTR5.The Journal of biological chemistry · 2010Article
- Altered xylem-phloem transfer of amino acids affects metabolism and leads to increased seed yield and oil content in Arabidopsis.The Plant cell · 2010Article
- Genomic survey, characterization and expression profile analysis of the peptide transporter family in rice (Oryza sativa L.).BMC plant biology · 2010Article
- Characterization of the Arabidopsis nitrate transporter NRT1.6 reveals a role of nitrate in early embryo development.The Plant cell · 2008Article
- AtPTR1 and AtPTR5 transport dipeptides in planta.Plant physiology · 2008Article
- Storage reserve accumulation in Arabidopsis: metabolic and developmental control of seed filling.The arabidopsis book · 2008Article
- The amino acid permease AAP8 is important for early seed development in Arabidopsis thaliana.Planta · 2007Article
- AtPTR3, a wound-induced peptide transporter needed for defence against virulent bacterial pathogens in Arabidopsis.Planta · 2007Article
- Enigma variations for peptides and their transporters in higher plants.Annals of botany · 2006Review
- Structural and functional characterization of AtPTR3, a stress-induced peptide transporter of Arabidopsis.Journal of molecular modeling · 2005Article
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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
Previously, we identified a peptide transport gene, AtPTR2-B, from Arabidopsis thaliana that was constitutively expressed in all plant organs, suggesting an important physiological role in plant growth and development. To evaluate the function of this transporter, transgenic Arabidopsis plants were constructed expressing antisense or sense AtPTR2-B. Genomic Southern analysis indicated that four independent antisense and three independent sense AtPTR2-B transgenic lines were obtained, which was confirmed by analysis of the segregation of the kanamycin resistance gene carried on the T-DNA. RNA blot data showed that the endogenous AtPTR2-B mRNA levels were significantly reduced in transgenic leaves and flowers, but not in transgenic roots. Consistent with this reduction in endogenous AtPTR2-B mRNA levels, all four antisense lines and one sense line exhibited significant phenotypic changes, including late flowering and arrested seed development. These phenotypic changes could be explained by a defect in nitrogen nutrition due to the reduced peptide transport activity conferred by AtPTR2-B. These results suggest that AtPTR2-B may play a general role in plant nutrition. The AtPTR2-B gene was mapped to chromosome 2, which is closely linked to the restriction fragment length polymorphism marker m246.
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