ArticleProceedings of the National Academy of Sciences of the United States of America2007
A gene essential for hydrotropism in roots.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers.
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Who cites it
71 citing papers in PubMed, 206 citations in OpenAlex.
- Root Cap Cuticles Confer a Transient, Penetration-Optimised Phase During Early Seedling Establishment.Plant, cell & environment · 2026Article
- Genotypic Variation in Maize Root Hydrotropism and Its Association with Shoot Growth and Water Use Efficiency Under Partial Root-Zone Drying.Plants (Basel, Switzerland) · 2026Article
- Article
- Review
- Root system architecture and drought adaptation: emerging tools and genetic insights.Frontiers in plant science · 2026Review
- An RbohC and RbohE-mediated ROS oscillatory circuit regulates root cap turnover in Arabidopsis.iScience · 2025Article
- Intracellular MIZU-KUSSEI1 movement and hydrotropism in Arabidopsis require F-actin organization.Plant physiology · 2025Article
- A functional complementation of a cotton MIZU-KUSSEI1 homolog in the hydrotropism response of Arabidopsis thaliana roots.BMC research notes · 2025Article
- Foraging for water by MIZ1-mediated antagonism between root gravitropism and hydrotropism.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Modulation of Root Hydrotropism and Recovery From Drought by MIZ1-like Genes in Tomato.Plant, cell & environment · 2025Article
- Research on the regulation mechanism of drought tolerance in wheat.Plant cell reports · 2025Review
- Arabidopsis calcium-dependent protein kinases 4/5/6/11 negatively regulate hydrotropism via phosphorylation of MIZU-KUSSEI1.The Plant cell · 2024Article
- Expression and functional divergence of a type-A response regulator paralog pair formed by dispersed duplication during Populus deltoides evolution.Communications biology · 2024Article
- RMD and Its Suppressor MAPK6 Control Root Circumnutation and Obstacle Avoidance via BR Signaling.International journal of molecular sciences · 2024Article
- Role of Abscisic Acid, Reactive Oxygen Species, and CaPlants (Basel, Switzerland) · 2024Review
- Defects in the cell wall and its deposition caused by loss-of-function of three RLKs alter root hydrotropism in Arabidopsis thaliana.Nature communications · 2024Article
- Don't be MIZguided, know where to grow!Communications biology · 2024Article
- Review
- The link between hydrotropism and phototropism in Arabidopsis roots.Journal of experimental botany · 2023Article
- Gravity sensing and responses in the coordination of the shoot gravitropic setpoint angle.The New phytologist · 2022Review
11 more citing papers are in PubMed but not listed here.
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Authors and funding
7 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Roots display hydrotropism in response to moisture gradients, which is thought to be important for controlling their growth orientation, obtaining water, and establishing their stand in the terrestrial environment. However, the molecular mechanism underlying hydrotropism remains unknown. Here, we report that roots of the Arabidopsis mutant mizu-kussei1 (miz1), which are impaired in hydrotropism, show normal gravitropism and elongation growth. The roots of miz1 plants showed reduced phototropism and a modified wavy growth response. There were no distinct differences in morphological features and root structure between miz1 and wild-type plants. These results suggest that the pathway inducing hydrotropism is independent of the pathways used in other tropic responses. The phenotype results from a single recessive mutation in MIZ1, which encodes a protein containing a domain (the MIZ domain) that is highly conserved among terrestrial plants such as rice and moss. The MIZ domain was not found in known genomes of organisms such as green algae, red algae, cyanobacteria, or animals. We hypothesize that MIZ1 has evolved to play an important role in adaptation to terrestrial life because hydrotropism could contribute to drought avoidance in higher plants. In addition, a pMIZ1::GUS fusion gene was expressed strongly in columella cells of the root cap but not in the elongation zone, suggesting that MIZ1 functions in the early phase of the hydrotropic response.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.