ArticlePlanta2011
DBB1a, involved in gibberellin homeostasis, functions as a negative regulator of blue light-mediated hypocotyl elongation in Arabidopsis.
Article in Planta, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.
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Who cites it
39 citing papers in PubMed.
- Multifaceted roles of BBX transcription factors: impacts on key agronomical traits and environmental resilience.The New phytologist · 2026Review
- Genome-Wide Identification of the Double B-Box (DBB) Family in Three Cotton Species and Functional Analysis ofPlants (Basel, Switzerland) · 2025Article
- Evolutionary dynamics and functional diversification of BBX transcription factors in CFrontiers in plant science · 2025Article
- Genome-Wide Identification, Characterization and Expression Patterns of the DBB Transcription Factor Family Genes in Wheat.International journal of molecular sciences · 2024Article
- Genome-wide identification, molecular evolution and expression analysis of the B-box gene family in mung bean (Vigna radiata L.).BMC plant biology · 2024Article
- Allelic variation of BBX24 is a dominant determinant controlling red coloration and dwarfism in pear.Plant biotechnology journal · 2024Article
- Genome-Wide Analysis ofInternational journal of molecular sciences · 2024Article
- TheMolecules (Basel, Switzerland) · 2024Article
- Genome-wide identification of B-box zinc finger (BBX) gene family in Medicago sativa and their roles in abiotic stress responses.BMC genomics · 2024Article
- Genome-wide analysis of blueberry B-box family genes and identification of members activated by abiotic stress.BMC genomics · 2023Article
- Genome-Wide Characterization of B-Box Gene Family inInternational journal of molecular sciences · 2023Article
- Multi-layered roles of BBX proteins in plant growth and development.Stress biology · 2023Review
- Plasticity of Arabidopsis rosette transcriptomes and photosynthetic responses in dynamic light conditions.Plant direct · 2023Article
- Genome-wide identification of BBX gene family and their expression patterns under salt stress in soybean.BMC genomics · 2022Article
- The Function ofGenes · 2022Article
- Rice and3 Biotech · 2022Review
- BBX16 mediates the repression of seedling photomorphogenesis downstream of the GUN1/GLK1 module during retrograde signalling.The New phytologist · 2022Article
- Phytochrome interacting factor MdPIF7 modulates anthocyanin biosynthesis and hypocotyl growth in apple.Plant physiology · 2022Article
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Double B-box 1a (DBB1a) belongs to the zinc-finger family proteins in Arabidopsis thaliana. Transcriptional analysis uncovered that the DBB1a gene expression was blue light-dependently regulated, and the transcript level of DBB1a in cry1cry2 was decreased but not in phyAphyB compared to wild type under blue light conditions. Transgenic plants containing pDBB1a:GUS (β-glucuronidase) displayed GUS activity in the vascular system of leaves and petioles. Green fluorescent protein (GFP)-fused DDB1a (DBB1a-GFP) protein was found in the nucleus in transient transformation assays with onion epidermal cells as well as in stable transgenic Arabidopsis plants. To investigate the function of DBB1a, we generated DBB1a over-expressing and under-expressing transgenic Arabidopsis plants. Analysis of hypocotyl growth of these lines indicated that DBB1a promoted hypocotyl elongation under blue light condition. The phenotype of transgenic plants with DBB1a over-expression could be impaired by a gibberellin (GA)-biosynthesis inhibitor. Moreover, the expression analysis of GA metabolic and catabolic genes in DBB1a transgenic lines indicated that the DBB1a suppressed GA2-oxidase1 (GA2ox1) and GA2-oxidase8 (GA2ox8) expression, but induced GA3β-hydroxygenase1 (GA3ox1) and GA20-oxidase1 (GA20ox1) expression under blue light. Taken together, we concluded that DBB1a promotes hypocotyl elongation under blue light condition through an increase in bioactive GA levels in Arabidopsis.
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