ArticlePlant physiology2009
Diversity in expression patterns and functional properties in the rice HKT transporter family.
Article in Plant physiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 95 papers.
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95 citing papers in PubMed, 203 citations in OpenAlex.
- The architecture of salt tolerance: A multi-scale view of sodium transport in plants.Plant communications · 2026Review
- Chloride-Transporting OsHKT1;1 Splice Variants and Their Expression Profiles Under Salinity Stress in Rice.International journal of molecular sciences · 2026Article
- CRISPR/Cas9-mediated disruption ofFrontiers in genome editing · 2026Article
- Putrescine mitigates NaCl-induced stress by modulating gene expression, antioxidants, and ethylene level in tomato.Plant signaling & behavior · 2025Article
- The origin and evolution of HKT proteins with TrkH domain from aquatic plants to flowering plants.Horticulture research · 2025Article
- Genome-wide identification of potassium transporters and channels in Malus domestica genome.Scientific reports · 2025Article
- Integrated Analyses Reveal the Physiological and Molecular Mechanisms of Brassinolide in Modulating Salt Tolerance in Rice.Plants (Basel, Switzerland) · 2025Article
- Ion homeostasis and coordinated salt tolerance mechanisms in a barley (Hordeum vulgare L.)doubled haploid line.BMC plant biology · 2025Article
- Comparative analysis of HKT genes inFrontiers in plant science · 2025Article
- The GRAS transcription factor OsGRAS2 negatively impacts salt tolerance in rice.Plant cell reports · 2024Article
- The Role of Cornichons in the Biogenesis and Functioning of Monovalent-Cation Transport Systems.Physiological research · 2024Review
- A high-affinity potassium transporter (MeHKT1) from cassava (Manihot esculenta) negatively regulates the response of transgenic Arabidopsis to salt stress.BMC plant biology · 2024Article
- Structural insights into ion selectivity and transport mechanisms of Oryza sativa HKT2;1 and HKT2;2/1 transporters.Nature plants · 2024Article
- Rice NaFrontiers in plant science · 2024Article
- Transcriptome profiling reveals multiple regulatory pathways of Tamarix chinensis in response to salt stress.Plant cell reports · 2023Article
- Natural variations of chlorophyll fluorescence and ion transporter genes influenced the differential response ofFrontiers in plant science · 2023Article
- Genome-wide identification of a novel NaFrontiers in plant science · 2023Article
- NP and 9311 are excellent population parents for screening QTLs of potassium-efficient rice.PloS one · 2023Article
- Reducing potassium deficiency by using sodium fertilisation.Stress biology · 2022Review
- The transcription factor OsMYBc and an E3 ligase regulate expression of a K+ transporter during salt stress.Plant physiology · 2022Article
35 more citing papers are in PubMed but not listed here.
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Authors and funding
11 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Plant growth under low K(+) availability or salt stress requires tight control of K(+) and Na(+) uptake, long-distance transport, and accumulation. The family of membrane transporters named HKT (for High-Affinity K(+) Transporters), permeable either to K(+) and Na(+) or to Na(+) only, is thought to play major roles in these functions. Whereas Arabidopsis (Arabidopsis thaliana) possesses a single HKT transporter, involved in Na(+) transport in vascular tissues, a larger number of HKT transporters are present in rice (Oryza sativa) as well as in other monocots. Here, we report on the expression patterns and functional properties of three rice HKT transporters, OsHKT1;1, OsHKT1;3, and OsHKT2;1. In situ hybridization experiments revealed overlapping but distinctive and complex expression patterns, wider than expected for such a transporter type, including vascular tissues and root periphery but also new locations, such as osmocontractile leaf bulliform cells (involved in leaf folding). Functional analyses in Xenopus laevis oocytes revealed striking diversity. OsHKT1;1 and OsHKT1;3, shown to be permeable to Na(+) only, are strongly different in terms of affinity for this cation and direction of transport (inward only or reversible). OsHKT2;1 displays diverse permeation modes, Na(+)-K(+) symport, Na(+) uniport, or inhibited states, depending on external Na(+) and K(+) concentrations within the physiological concentration range. The whole set of data indicates that HKT transporters fulfill distinctive roles at the whole plant level in rice, each system playing diverse roles in different cell types. Such a large diversity within the HKT transporter family might be central to the regulation of K(+) and Na(+) accumulation in monocots.
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