ArticlePlant physiology2010
Boron toxicity tolerance in barley through reduced expression of the multifunctional aquaporin HvNIP2;1.
Article in Plant physiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers.
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55 citing papers in PubMed, 177 citations in OpenAlex.
- Spatial Regulation of Silicon Accumulation in Peduncle Confers Sheathed Spike in Barley.Plant biotechnology journal · 2026Article
- Genome-Wide Analysis of the Aquaporin Gene Family Reveals the Role ofPlants (Basel, Switzerland) · 2026Article
- Exclusion and Trapping Mechanisms of Boron in Forage Grasses Irrigated with Treated Oilfield-Produced Water.Plants (Basel, Switzerland) · 2026Article
- Intertwining of Cellular Osmotic Stress Handling Mechanisms and Heavy Metal Accumulation.Molecular biotechnology · 2025Review
- Excessive boron fertilization-induced toxicity is related to boron transport in field-grown pomelo trees.Frontiers in plant science · 2024Article
- Role of boron and its interaction with other elements in plants.Frontiers in plant science · 2024Review
- The Fungal Root EndophyteBiology · 2023Article
- Silicon Differently Affects Apoplastic Binding of Excess Boron in Wheat and Sunflower Leaves.Plants (Basel, Switzerland) · 2023Article
- Genome-wide identification and biological relevance of broccoli aquaporins.The plant genome · 2022Article
- Boron uptake in rice is regulated post-translationally via a clathrin-independent pathway.Plant physiology · 2022Article
- Structure and function of a silicic acid channel Lsi1.Frontiers in plant science · 2022Review
- Molecular characterization of the genome-wideFrontiers in plant science · 2022Article
- Metalloid transporters and their regulation in plants.Plant physiology · 2021Review
- Article
- Interactions of Silicon With Essential and Beneficial Elements in Plants.Frontiers in plant science · 2021Review
- Arbuscular Mycorrhiza-Mediated Regulation of Polyamines and Aquaporins During Abiotic Stress: Deep Insights on the Recondite Players.Frontiers in plant science · 2021Review
- Plant transporters involved in combating boron toxicity: beyond 3D structures.Biochemical Society transactions · 2020Review
- Genome-wide identification and characterisation of Aquaporins in Nicotiana tabacum and their relationships with other Solanaceae species.BMC plant biology · 2020Article
- From element to development: the power of the essential micronutrient boron to shape morphological processes in plants.Journal of experimental botany · 2020Review
- Elucidating the Possible Involvement of Maize Aquaporins in the Plant Boron Transport and Homeostasis Mediated byInternational journal of molecular sciences · 2020Article
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Authors and funding
8 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Boron (B) toxicity is a significant limitation to cereal crop production in a number of regions worldwide. Here we describe the cloning of a gene from barley (Hordeum vulgare), underlying the chromosome 6H B toxicity tolerance quantitative trait locus. It is the second B toxicity tolerance gene identified in barley. Previously, we identified the gene Bot1 that functions as an efflux transporter in B toxicity-tolerant barley to move B out of the plant. The gene identified in this work encodes HvNIP2;1, an aquaporin from the nodulin-26-like intrinsic protein (NIP) subfamily that was recently described as a silicon influx transporter in barley and rice (Oryza sativa). Here we show that a rice mutant for this gene also shows reduced B accumulation in leaf blades compared to wild type and that the mutant protein alters growth of yeast (Saccharomyces cerevisiae) under high B. HvNIP2;1 facilitates significant transport of B when expressed in Xenopus oocytes compared to controls and to another NIP (NOD26), and also in yeast plasma membranes that appear to have relatively high B permeability. We propose that tolerance to high soil B is mediated by reduced expression of HvNIP2;1 to limit B uptake, as well as by increased expression of Bot1 to remove B from roots and sensitive tissues. Together with Bot1, the multifunctional aquaporin HvNIP2;1 is an important determinant of B toxicity tolerance in barley.
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