ArticleThe Plant cell2007
SALT TOLERANCE HOMOLOG2, a B-box protein in Arabidopsis that activates transcription and positively regulates light-mediated development.
Article in The Plant cell, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 131 papers, 1 of them a synthesis that pooled it.
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Who cites it
131 citing papers in PubMed, 1 synthesis or guideline pooled it, 267 citations in OpenAlex.
- Precise scheduling of B-box transcription factors: the core network for balancing plant growth, metabolism and stress resistance.Frontiers in plant science · 2026Pooled it
- Genome-Wide Characterization and Light-Responsive Expression Patterns of B-Box Transcription Factors inPlants (Basel, Switzerland) · 2026Article
- Transcriptomic analysis reveals light quality response and systemic nutrient allocation under monochromatic light environments in Nicotiana tabacum.BMC plant biology · 2025Article
- CHIP-seq and transcriptomics reveal a new role of circadian-regulated StBBX24 protein in potato reproduction.BMC plant biology · 2025Article
- Gibberellin transport affects lateral root growth through HY5 in response to far-red light.The Plant cell · 2025Article
- Comparative physiological and transcriptomic analyses identify computationally predicted key genes and regulatory pathways in non-heading Chinese cabbage under heat stress.BMC plant biology · 2025Article
- Two B-Box Proteins, GhBBX21 and GhBBX24, Antagonistically Modulate Anthocyanin Biosynthesis inPlants (Basel, Switzerland) · 2025Article
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- Transcript-Wide Identification and Characterization of the BBX Gene Family inPlants (Basel, Switzerland) · 2025Article
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- More than flowering: CONSTANS plays multifaceted roles in plant development and stress responses.Journal of integrative plant biology · 2025Review
- Molecular Functional and Transcriptome Analysis ofPlants (Basel, Switzerland) · 2024Article
- Genome-Wide Identification, Characterization and Expression Patterns of the DBB Transcription Factor Family Genes in Wheat.International journal of molecular sciences · 2024Article
- Ubiquitin-specific protease UBP14 stabilizes HY5 by deubiquitination to promote photomorphogenesis inProceedings of the National Academy of Sciences of the United States of America · 2024Article
- Genome-Wide Identification of B-Box Family Genes and Their Potential Roles in Seed Development under Shading Conditions in Rapeseed.Plants (Basel, Switzerland) · 2024Article
- What is going on inside of phytochrome B photobodies?The Plant cell · 2024Review
- Genome-Wide Analysis ofInternational journal of molecular sciences · 2024Article
- CaSTH2 disables CaWRKY40 from activating pepper thermotolerance and immunity againstHorticulture research · 2024Article
- A Regulatory Mechanism on Pathways: Modulating Roles of MYC2 and BBX21 in the Flavonoid Network.Plants (Basel, Switzerland) · 2024Article
- Genome-Wide Identification of B-Box Gene Family and Candidate Light-Related Member Analysis of Tung Tree (International journal of molecular sciences · 2024Article
71 more citing papers are in PubMed but not listed here.
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Authors and funding
4 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
CONSTITUTIVELY PHOTOMORPHOGENIC1 (COP1) and ELONGATED HYPOCOTYL5 (HY5) are two major regulators of light signaling in plants. Here, we identify SALT TOLERANCE HOMOLOG2 (STH2) as a gene that interacts genetically with both of these key regulators. STH2 encodes a B-box-containing protein that interacts physically with HY5 in yeast and in plant cells. Whereas STH2 is uniformly nuclear by itself, it shows a COP1-dependent localization to speckles when coexpressed with COP1. We identified two independent T-DNA insertion lines in STH2. Both alleles are hyposensitive to blue, red, and far-red light. The sth2 mutant, like hy5, shows an enhanced number of lateral roots and accumulates less anthocyanin. Analysis of double mutants between sth2 and hy5 indicates that STH2 has both HY5-dependent and -independent functions. Furthermore, besides partially suppressing the hypocotyl phenotype of dark-grown cop1 alleles, sth2 also suppresses the reduced number of lateral roots and high anthocyanin levels in light-grown cop1 alleles. Interestingly, we found that STH2 can activate transcription. Transient transfection assays in protoplasts using a LUC reporter driven by the chalcone isomerase promoter show that the B-boxes in STH2 and a functional G-box element in the promoter are required for this activity. In conclusion, we have identified STH2, a B-box protein in Arabidopsis thaliana, as a positive regulator of photomorphogenesis and report that the B-box domain plays a direct role in activating transcription in plants.
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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.