ArticlePlant molecular biology2019
Functional and molecular characterization of the conserved Arabidopsis PUMILIO protein, APUM9.
Article in Plant molecular biology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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13 citing papers in PubMed, 26 citations in OpenAlex.
- Natural variation inScience advances · 2026Article
- FaRIF as a key regulator of strawberry fruit ripening: deciphering its targets and interaction networks.Horticulture research · 2026Article
- Holistic overview of regulatory networks governing seed dormancy and germination in plants.Science China. Life sciences · 2026Review
- Characterization of OsCAF1 Protein Function in Rice Response to Thermal Stress.Plants (Basel, Switzerland) · 2025Article
- Natural Diversity of Heat-Induced Transcription of Retrotransposons in Arabidopsis thaliana.Genome biology and evolution · 2024Article
- Untranslated yet indispensable-UTRs act as key regulators in the environmental control of gene expression.Journal of experimental botany · 2024Review
- A commitment for life: Decades of unraveling the molecular mechanisms behind seed dormancy and germination.The Plant cell · 2024Review
- Comprehensive Identification of theInternational journal of molecular sciences · 2023Article
- The Role of Pumilio RNA Binding Protein in Plants.Biomolecules · 2021Review
- Plant RNA Binding Proteins as Critical Modulators in Drought, High Salinity, Heat, and Cold Stress Responses: An Updated Overview.International journal of molecular sciences · 2021Review
- Emerging Roles of RNA-Binding Proteins in Seed Development and Performance.International journal of molecular sciences · 2020Review
- Article
- Functions, mechanisms and regulation of Pumilio/Puf family RNA binding proteins: a comprehensive review.Molecular biology reports · 2020Review
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Authors and funding
3 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
key messageHere we demonstrate that the APUM9 RNA-binding protein and its co-factors play a role in mRNA destabilization and how this activity might regulate early plant development. APUM9 is a conserved PUF RNA-binding protein (RBP) under complex transcriptional control mediated by a transposable element (TE) that restricts its expression in Arabidopsis. Currently, little is known about the functional and mechanistic details of the plant PUF regulatory system and the biological relevance of the TE-mediated repression of APUM9 in plant development and stress responses. By combining a range of transient assays, we show here, that APUM9 binding to target transcripts can trigger their rapid decay via its conserved C-terminal RNA-binding domain. APUM9 directly interacts with DCP2, the catalytic subunit of the decapping complex and DCP2 overexpression induces rapid decay of APUM9 targeted mRNAs. We show that APUM9 negatively regulates the expression of ABA signaling genes during seed imbibition, and thereby might contribute to the switch from dormant stage to seed germination. By contrast, strong TE-mediated repression of APUM9 is important for normal plant growth in the later developmental stages. Finally, APUM9 overexpression plants show slightly enhanced heat tolerance suggesting that TE-mediated control of APUM9, might have a role not only in embryonic development, but also in plant adaptation to heat stress conditions.
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