ArticlePlant physiology2015
Integrative Comparison of the Role of the PHOSPHATE RESPONSE1 Subfamily in Phosphate Signaling and Homeostasis in Rice.
Article in Plant physiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 89 papers.
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Who cites it
89 citing papers in PubMed.
- Sulfur in dialogue with phosphorus, nitrogen, and iron: regulatory networks in plant nutrient homeostasis.Journal of experimental botany · 2026Review
- Root hair plasticity in cereals under abiotic stress.The New phytologist · 2026Review
- ZmPHR1 and ZmPHR2 Mediate Metabolic and Microbial Regulation of Maize Adaptation to Phosphorus Heterogeneity.Plant, cell & environment · 2026Article
- Transcription factors in phosphorus utilization: enhancing crop productivity and stress resilience.Planta · 2026Review
- Unfolding of RNA secondary structure impairs RNA stability to fine-tune phosphate starvation responses in rice roots.Plant communications · 2026Article
- Multi-Omics Reveals Domestication-Associated Shifts in Phosphorus Adaptation Strategies in Tomato.Plants (Basel, Switzerland) · 2026Article
- Introgression of wild barley alleles improves seedlings salinity tolerance in the nested association mapping HEB-400 population.The plant genome · 2026Article
- PHR1-like 7 and phosphatidic acid oppositely regulate TAG degradation and seed oil accumulation in Arabidopsis.Plant communications · 2026Article
- Adaptation mechanisms of low-phosphorus stress in plants: physiological responses, molecular regulation, and future perspectives.Frontiers in plant science · 2026Review
- PHR-Mediated Pi Starvation Response Mobile Messenger RNAs Represent Noncoding Transcripts in Recipient Tissues.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- OsCK2 Phosphorylates OsSIZ1 to Regulate Phosphate Starvation Response and Defence Response in Rice.Plant biotechnology journal · 2025Article
- Genome-Wide Identification of theInternational journal of molecular sciences · 2025Article
- Genome-wide identification and expression analysis of the GARP superfamily in response to abiotic stresses in alfalfa (Medicago sativa L.).BMC plant biology · 2025Article
- Deciphering the tomato phosphate starvation response: Functional and transcriptional roles of SlPHR3 and SlPHR4.The Plant cell · 2025Article
- Genetic Dissection of Rice Plant-Specific Non-ε Group 14-3-3 Proteins in Response to Phosphate Starvation.Rice (New York, N.Y.) · 2025Article
- MmPHR1 enhances low phosphorus stress tolerance by activating MmPHT1;5 in an elite apple rootstock -Malus mandshurica.BMC plant biology · 2025Article
- Genome-Wide Identification of thePlants (Basel, Switzerland) · 2025Article
- NNature communications · 2025Article
- Decoding PHR-Orchestrated Stress Adaptation: A Genome-Wide Integrative Analysis of Transcriptional Regulation Under Abiotic Stress inInternational journal of molecular sciences · 2025Article
- A PHR-dependent reciprocal antagonistic interplay between UV response and P-deficiency adaptation in plants.Plant communications · 2025Article
29 more citing papers are in PubMed but not listed here.
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14 authors.
Funding
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Abstract
Phosphorus (P), an essential macronutrient for all living cells, is indispensable for agricultural production. Although Arabidopsis (Arabidopsis thaliana) PHOSPHATE RESPONSE1 (PHR1) and its orthologs in other species have been shown to function in transcriptional regulation of phosphate (Pi) signaling and Pi homeostasis, an integrative comparison of PHR1-related proteins in rice (Oryza sativa) has not previously been reported. Here, we identified functional redundancy among three PHR1 orthologs in rice (OsPHR1, OsPHR2, and OsPHR3) using phylogenetic and mutation analysis. OsPHR3 in conjunction with OsPHR1 and OsPHR2 function in transcriptional activation of most Pi starvation-induced genes. Loss-of-function mutations in any one of these transcription factors (TFs) impaired root hair growth (primarily root hair elongation). However, these three TFs showed differences in DNA binding affinities and messenger RNA expression patterns in different tissues and growth stages, and transcriptomic analysis revealed differential effects on Pi starvation-induced gene expression of single mutants of the three TFs, indicating some degree of functional diversification. Overexpression of genes encoding any of these TFs resulted in partial constitutive activation of Pi starvation response and led to Pi accumulation in the shoot. Furthermore, unlike OsPHR2-overexpressing lines, which exhibited growth retardation under normal or Pi-deficient conditions, OsPHR3-overexpressing plants exhibited significant tolerance to low-Pi stress but normal growth rates under normal Pi conditions, suggesting that OsPHR3 would be useful for molecular breeding to improve Pi uptake/use efficiency under Pi-deficient conditions. We propose that OsPHR1, OsPHR2, and OsPHR3 form a network and play diverse roles in regulating Pi signaling and homeostasis in rice.
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