ArticleThe New phytologist2021
OsWRKY21 and OsWRKY108 function redundantly to promote phosphate accumulation through maintaining the constitutive expression of OsPHT1;1 under phosphate-replete conditions.
Article in The New phytologist, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.
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32 citing papers in PubMed, 79 citations in OpenAlex.
- Functional and regulatory complexity: challenges and prospects for understanding rice WRKY transcription factors.Journal of experimental botany · 2026Review
- Transcription factors in phosphorus utilization: enhancing crop productivity and stress resilience.Planta · 2026Review
- Transcriptome Analysis IdentifiesPlants (Basel, Switzerland) · 2026Article
- Plant Signaling Hormones and Transcription Factors: Key Regulators of Plant Responses to Growth, Development, and Stress.Plants (Basel, Switzerland) · 2025Review
- The transcription factor OsNAC25 regulates potassium homeostasis in rice.Plant biotechnology journal · 2025Article
- Genome-Wide Identification and Expression Analysis of the Phosphate Transporter Gene Family inInternational journal of molecular sciences · 2025Article
- Identification and Expression Analysis of Acid Phosphatase Gene (Plants (Basel, Switzerland) · 2025Article
- From genes to traits: maximizing phosphorus utilization efficiency in crop plants.Frontiers in plant science · 2025Review
- OSH45, a homeobox transcription factor, coordinates low-phosphate adaptation in rice.Frontiers in plant science · 2025Article
- Genome-Wide Transcriptional Profiling and Functional Analysis Reveal That OsPHT4;4 Is Critical for the Growth and Development of Rice.International journal of molecular sciences · 2024Article
- Characterization and stress-responsive regulation of CmPHT1 genes involved in phosphate uptake and transport in Melon (Cucumis melo L.).BMC plant biology · 2024Article
- Comparative Analysis of Hulless Barley Transcriptomes to Regulatory Effects of Phosphorous Deficiency.Life (Basel, Switzerland) · 2024Article
- WRKY Transcription Factor Responses and Tolerance to Abiotic Stresses in Plants.International journal of molecular sciences · 2024Review
- Comparative transcriptomic and physiological analyses unravel wheat source root adaptation to phosphorous deficiency.Scientific reports · 2024Article
- The transcription factor MYB110 regulates plant height, lodging resistance, and grain yield in rice.The Plant cell · 2024Article
- Transcription factors GmERF1 and GmWRKY6 synergistically regulate low phosphorus tolerance in soybean.Plant physiology · 2023Article
- Overexpression of ClWRKY48 from Cunninghamia lanceolata improves Arabidopsis phosphate uptake.Planta · 2023Article
- The transcription factor OsWRKY10 inhibits phosphate uptake via suppressing OsPHT1;2 expression under phosphate-replete conditions in rice.Journal of experimental botany · 2023Article
- Multifaceted roles of WRKY transcription factors in abiotic stress and flavonoid biosynthesis.Frontiers in plant science · 2023Review
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11 authors at 1 institution in 1 country.
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Abstract
Plant Phosphate Transporter 1 (PHT1) proteins, probably the only influx transporters for phosphate (Pi) uptake, are partially degraded on sufficient Pi levels to prevent excessive Pi accumulation. Therefore, the basal/constitutive expression level of PHT1 genes is vital for maintaining Pi uptake under Pi-replete conditions. Rice (Oryza sativa) OsPHT1;1 is a unique gene as it is highly expressed and not responsive to Pi, however the mechanism for maintaining its basal/constitutive expression remains unknown. Using biochemical and genetic approaches, we identified and functionally characterised the transcription factors maintaining the basal/constitutive expression of OsPHT1;1. OsWRKY21 and OsWRKY108 interact within the nucleus and both bind to the W-box in the OsPHT1;1 promoter. Overexpression of OsWRKY21 or OsWRKY108 led to increased Pi accumulation, resulting from elevated expression of OsPHT1;1. By contrast, oswrky21 oswrky108 double mutants showed decreased Pi accumulation and OsPHT1;1 expression in a Pi-dependent manner. Moreover, similar to ospht1;1 mutants, plants expressing the OsWRKY21-SRDX fusion protein (a chimeric dominant suppressor) were impaired in Pi accumulation in Pi-replete roots, accompanied by downregulation of OsPHT1;1 expression. Our findings demonstrated that rice WRKY transcription factors function redundantly to promote Pi uptake by activating OsPHT1;1 expression under Pi-replete conditions, and represent a novel pathway independent of the central Pi signalling system.
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