ArticlePlant physiology2012
The Arabidopsis ortholog of rice DWARF27 acts upstream of MAX1 in the control of plant development by strigolactones.
Article in Plant physiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 104 papers.
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104 citing papers in PubMed, 229 citations in OpenAlex.
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- Towards an integrated molecular understanding of plant hormones.Journal of integrative plant biology · 2026Review
- Soil to Cytoplasm: The Mycorrhizal Phosphorus Express and Its Regulatory Steps.Journal of fungi (Basel, Switzerland) · 2026Review
- ThePlants (Basel, Switzerland) · 2026Article
- The BoMYC2-BoD27 cascade regulates branching by influencing the content of strigolactones in ornamental kale.Plant cell reports · 2026Article
- Genome-wide identification and functional characterization of the CaD27 gene family in pepper under cold stress.Plant molecular biology · 2026Article
- Ameliorative effects of strigolactone on tolerance to lead stress on lettuce (Lactuca sativa L.) plants.Scientific reports · 2025Article
- Rice Transcription Factor HSTL Regulates Plant Height and Salt Stress Response by Modulating Gibberellin Homeostasis.Rice (New York, N.Y.) · 2025Article
- Mining and identification of factors influencing multi-branch plasticity in ornamental kale.Planta · 2025Article
- Review
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- Characterization of a β-carotene isomerase from the cyanobacteriumPhilosophical transactions of the Royal Society of London. Series B, Biological sciences · 2024Article
- The Psathyrostachys juncea DWARF27 gene encodes an all-trans-/9-cis-beta-carotene isomerase in the control of plant branches in Arabidopsis thaliana by strigolactones.G3 (Bethesda, Md.) · 2024Article
- Strigolactones Negatively Regulate Tobacco Mosaic Virus Resistance inInternational journal of molecular sciences · 2024Article
- The AGAMOUS-LIKE 16-GENERAL REGULATORY FACTOR 1 module regulates axillary bud outgrowth via catabolism of abscisic acid in cucumber.The Plant cell · 2024Article
- Deciphering the differential expression patterns of yield-related negative regulators in hexaploid wheat cultivars and hybrids at different growth stages.Molecular biology reports · 2024Article
- Knockout mutation inFrontiers in genome editing · 2024Article
- The role of strigolactone analog (GR24) in endogenous hormone metabolism and hormone-related gene expression in tobacco axillary buds.Plant cell reports · 2023Article
- AtMYBS1 negatively regulates heat tolerance by directly repressing the expression of MAX1 required for strigolactone biosynthesis in Arabidopsis.Plant communications · 2023Article
- Strigolactones and Shoot Branching: What Is the Real Hormone and How Does It Work?Plant & cell physiology · 2023Review
44 more citing papers are in PubMed but not listed here.
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Strigolactones (SLs) are carotenoid-derived plant hormones that regulate shoot branching, secondary growth, root development, and responses to soil phosphate. In Arabidopsis (Arabidopsis thaliana), SL biosynthesis requires the sequential action of two carotenoid cleavage dioxygenases, MORE AXILLARY GROWTH3 (MAX3) and MAX4, followed by a cytochrome P450, MAX1. In rice (Oryza sativa), the plastid-localized protein DWARF27 (OsD27) is also necessary for SL biosynthesis, but the equivalent gene in Arabidopsis has not been identified. Here, we use phylogenetic analysis of D27-like sequences from photosynthetic organisms to identify AtD27, the likely Arabidopsis ortholog of OsD27. Using reverse genetics, we show that AtD27 is required for the inhibition of secondary bud outgrowth and that exogenous application of the synthetic SL GR24 can rescue the increased branching phenotype of an Atd27 mutant. Furthermore, we use grafting to demonstrate that AtD27 operates on a nonmobile precursor upstream of MAX1 in the SL biosynthesis pathway. Consistent with the plastid localization of OsD27, we also show that AtD27 possesses a functional plastid transit peptide. We demonstrate that AtD27 transcripts are subject to both local feedback and auxin-dependent signals, albeit to a lesser extent than MAX3 and MAX4, suggesting that early steps in SL biosynthesis are coregulated at the transcriptional level. By identifying an additional component of the canonical SL biosynthesis pathway in Arabidopsis, we provide a new tool to investigate the regulation of shoot branching and other SL-dependent developmental processes.
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