ArticleThe Plant cell2022
The photomorphogenic repressors BBX28 and BBX29 integrate light and brassinosteroid signaling to inhibit seedling development in Arabidopsis.
Article in The Plant cell, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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20 citing papers in PubMed, 41 citations in OpenAlex.
- BR-ENHANCED EXPRESSION 1/2/3 fine-tune plant photomorphogenesis by regulating the phyA/B-SPA1 cascade.The Plant cell · 2026Article
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- Regulatory effects of different proportions of far-red light on key metabolic components in tea plants (Camellia sinensis L.).Journal of the science of food and agriculture · 2026Article
- Genome-Wide Identification of theCurrent issues in molecular biology · 2026Article
- Independent component analysis deciphers the genetic basis of cotton fiber elongation through eQTLs and sQTLs.Journal of advanced research · 2026Article
- Multifaceted roles of BBX transcription factors: impacts on key agronomical traits and environmental resilience.The New phytologist · 2026Review
- Seasonal changes in daily temperature fluctuation control flowering through a time-dependent regulation ofResearch square · 2025Article
- Article
- Effects of high light intensity and spectral variability on maize photosynthesis and growth.Frontiers in plant science · 2025Article
- Antisense transcription from stress-responsive transcription factors fine-tunes the cold response in Arabidopsis.The Plant cell · 2024Article
- Article
- BoaBZR1.1 mediates brassinosteroid-induced carotenoid biosynthesis in Chinese kale.Horticulture research · 2024Article
- Genome-Wide Identification of B-Box Gene Family and Candidate Light-Related Member Analysis of Tung Tree (International journal of molecular sciences · 2024Article
- Genome-wide analysis of blueberry B-box family genes and identification of members activated by abiotic stress.BMC genomics · 2023Article
- AtHSPR functions in gibberellin-mediated primary root growth by interacting with KNAT5 and OFP1 in Arabidopsis.Plant cell reports · 2023Article
- Article
- AtBBX29 integrates photomorphogenesis and defense responses in Arabidopsis.Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology · 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
- Article
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Authors and funding
17 authors at 7 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
B-box containing proteins (BBXs) integrate light and various hormonal signals to regulate plant growth and development. Here, we demonstrate that the photomorphogenic repressors BBX28 and BBX29 positively regulate brassinosteroid (BR) signaling in Arabidopsis thaliana seedlings. Treatment with the BR brassinolide stabilized BBX28 and BBX29, which partially depended on BR INSENSITIVE1 (BRI1) and BIN2. bbx28 bbx29 seedlings exhibited larger cotyledon aperture than the wild-type when treated with brassinazole in the dark, which partially suppressed the closed cotyledons of brassinazole resistant 1-1D (bzr1-1D). Consistently, overexpressing BBX28 and BBX29 partially rescued the short hypocotyls of bri1-5 and bin2-1 in both the dark and light, while the loss-of-function of BBX28 and BBX29 partially suppressed the long hypocotyls of bzr1-1D in the light. BBX28 and BBX29 physically interacted with BR-ENHANCED EXPRESSION1 (BEE1), BEE2, and BEE3 and enhanced their binding to and activation of their target genes. Moreover, BBX28 and BBX29 as well as BEE1, BEE2, and BEE3 increased BZR1 accumulation to promote the BR signaling pathway. Therefore, both BBX28 and BBX29 interact with BEE1, BEE2, and BEE3 to orchestrate light and BR signaling by facilitating the transcriptional activity of BEE target genes. Our study provides insights into the pivotal roles of BBX28 and BBX29 as signal integrators in ensuring normal seedling development.
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