ArticlePlant molecular biology2012
The mRNA of a Knotted1-like transcription factor of potato is phloem mobile.
Article in Plant molecular biology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.
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Who cites it
44 citing papers in PubMed, 94 citations in OpenAlex.
- Unraveling the Intertwined Networks of Potato Tuberization: From Epitranscriptomic Signaling to Metabolic Reprogramming.International journal of molecular sciences · 2026Review
- The role of transcription factor StBEL11 in carbon allocation and tuberization in cultivated potato differs from that known for the model Andean genotype.Journal of experimental botany · 2026Article
- PfTALE5 Acts as a hub for multi-stress resilience: a genome-wide study of the TALE family in Paulownia fortunei.BMC plant biology · 2026Article
- Genome-wide identification, expression patterns and functional analysis of TALE (Three Amino-Acid Loop Extension) transcription factors in Arabidopsis thaliana.BMC plant biology · 2025Article
- StCDF1: A 'jack of all trades' clock output with a central role in regulating potato nitrate reduction activity.The New phytologist · 2025Article
- BEL transcription factors in prominent Solanaceae crops: the missing pieces of the jigsaw in plant development.Planta · 2023Review
- Tandem Expression of a Mobile RNA and Its RNA-Binding Protein(s) Enhances Tuber Productivity in Potato.International journal of molecular sciences · 2023Article
- Long-Distance Movement ofPlants (Basel, Switzerland) · 2023Article
- Transcriptome Analysis of the Effects of Grafting Interstocks on Apple Rootstocks and Scions.International journal of molecular sciences · 2023Article
- Long distance signalling and epigenetic changes in crop grafting.Frontiers in plant science · 2023Review
- Identification of Long-Distance Transport Signal Molecules Associated with Plant Maturity in Tetraploid Cultivated Potatoes (Plants (Basel, Switzerland) · 2022Article
- AUXIN RESPONSE FACTOR 16 (StARF16) regulates defense gene StNPR1 upon infection with necrotrophic pathogen in potato.Plant molecular biology · 2022Article
- Review
- Development of aerial and belowground tubers in potato is governed by photoperiod and epigenetic mechanism.Plant physiology · 2021Review
- Phloem Exit as a Possible Control Point in Selective Systemic Transport of RNA.Frontiers in plant science · 2021Review
- Article
- RNA Motifs and Modification Involve in RNA Long-Distance Transport in Plants.Frontiers in cell and developmental biology · 2021Review
- Unidirectional movement of small RNAs from shoots to roots in interspecific heterografts.Nature plants · 2021Article
- Article
- The interplay of phloem-mobile signals in plant development and stress response.Bioscience reports · 2020Review
Corrections and comments
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Authors and funding
5 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Potato Homeobox1 (POTH1) is a Knotted1-like transcription factor from the Three Amino Acid Loop Extension (TALE) superfamily that is involved in numerous aspects of development in potato (Solanum tuberosum L). POTH1 interacts with its protein partner, StBEL5, to facilitate binding to specific target genes to modulate hormone levels, mediate leaf architecture, and enhance tuber formation. In this study, promoter analyses show that the upstream sequence of POTH1 drives β-glucuronidase activity in response to light and in association with phloem cells in both petioles and stems. Because POTH1 transcripts have previously been detected in phloem cells, long-distance movement of its mRNA was tested. Using RT-PCR and transgenic potato lines over-expressing POTH1, in vitro micrografts demonstrated unilateral movement of POTH1 RNA in a rootward direction. Movement across a graft union into leaves from newly arising axillary shoots and roots of wild type stocks was verified using soil-grown tobacco heterografts. Leaves from the wild type stock containing the mobile POTH1 RNA exhibited a reduction in leaf size relative to leaves from wild type grafts. Both untranslated regions of POTH1 when fused to an expression marker β-glucuronidase, repressed its translation in tobacco protoplasts. RNA/protein binding assays demonstrated that the UTRs of POTH1 bind to two RNA-binding proteins, a polypyrimidine tract-binding protein and an alba-domain type. Conserved glycerol-responsive elements (GRE), specific to alba-domain interaction, are duplicated in both the 5' and 3' untranslated regions of POTH1. These results suggest that POTH1 functions as a mobile signal in regulating development.
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