ArticlePlant physiology2013
SUPPRESSOR OF MORE AXILLARY GROWTH2 1 controls seed germination and seedling development in Arabidopsis.
Article in Plant physiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 127 papers.
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127 citing papers in PubMed, 290 citations in OpenAlex.
- Negative feedback regulation of karrikin signaling inProceedings of the National Academy of Sciences of the United States of America · 2026Article
- A group of TCP transcription factors is a missing link in strigolactone signaling.Journal of integrative plant biology · 2026Article
- Structural and functional characterisation of a reconstructed ancestral strigolactone receptor.The Plant journal : for cell and molecular biology · 2026Article
- Article
- Emerging Trends in Nanotechnology and AI-Driven Valorization of Agro-Industrial Waste in Circular Bioeconomy for Production of Biostimulants.Foods (Basel, Switzerland) · 2026Review
- Divergent strigolactones or karrikins signaling is mediated by preferred AtD14/KAI2-MAX2-SMXL complex targeting specific SMXL domains.iScience · 2026Article
- Genome-Wide Identification and Characterization of theInternational journal of molecular sciences · 2026Article
- Holistic overview of regulatory networks governing seed dormancy and germination in plants.Science China. Life sciences · 2026Review
- SMXL3 controls multiple aspects of Arabidopsis development via EAR motif-dependent and -independent functions.The Plant journal : for cell and molecular biology · 2026Article
- Molecular insights into volatile organic compound sensing and signaling in plants.The Plant journal : for cell and molecular biology · 2026Review
- Overexpression of DWARF14-LIKE2 in Arabidopsis thaliana alters multiple traits related to plant morphology and osmotic and salt stress tolerance.Plant cell reports · 2026Article
- Crosstalk between strigolactone and KAI2/KL signalling in plant growth and stress responses.Frontiers in plant science · 2026Review
- In vitro dynamic and quantitative monitoring of strigolactone-signaling complex formation by time-resolved FRET.The Plant journal : for cell and molecular biology · 2025Article
- Mechanism of cooperative strigolactone perception by the MAX2 ubiquitin ligase-receptor-substrate complex.Nature communications · 2025Article
- Arabidopsis response to the apocarotenoid zaxinone involves interference with strigolactone signaling via binding to DWARF14.Nature communications · 2025Article
- Disruption of the karrikin receptor DWARF 14 LIKE (D14L) gene leads to distinct effects on root and shoot growth, and reprogramming of central metabolism in rice.Journal of experimental botany · 2025Article
- Role of Plant-Derived Smoke Solution on Plants Under Stress.International journal of molecular sciences · 2025Review
- An N-terminal domain specifies developmental control by the SMAX1-LIKE family of transcriptional regulators inProceedings of the National Academy of Sciences of the United States of America · 2025Article
- Strigolactones optimise plant water usage by modulating vessel formation.Nature communications · 2025Article
- The Multifaceted Impact of Karrikin Signaling in Plants.International journal of molecular sciences · 2025Review
67 more citing papers are in PubMed but not listed here.
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Authors and funding
4 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Abiotic chemical signals discovered in smoke that are known as karrikins (KARs) and the endogenous hormone strigolactone (SL) control plant growth through a shared MORE AXILLARY GROWTH2 (MAX2)-dependent pathway. A SL biosynthetic pathway and candidate KAR/SL receptors have been characterized, but signaling downstream of MAX2 is poorly defined. A screen for genetic suppressors of the enhanced seed dormancy phenotype of max2 in Arabidopsis (Arabidopsis thaliana) led to identification of a suppressor of max2 1 (smax1) mutant. smax1 restores the seed germination and seedling photomorphogenesis phenotypes of max2 but does not affect the lateral root formation, axillary shoot growth, or senescence phenotypes of max2. Expression of three transcriptional markers of KAR/SL signaling, D14-LIKE2, KAR-UP F-BOX1, and INDOLE-3-ACETIC ACID INDUCIBLE1, is rescued in smax1 max2 seedlings. SMAX1 is a member of an eight-gene family in Arabidopsis that has weak similarity to HEAT SHOCK PROTEIN 101, which encodes a caseinolytic peptidase B chaperonin required for thermotolerance. SMAX1 and the SMAX1-like (SMXL) homologs are differentially expressed in Arabidopsis tissues. SMAX1 transcripts are most abundant in dry seed, consistent with its function in seed germination control. Several SMXL genes are up-regulated in seedlings treated with the synthetic SL GR24. SMAX1 and SMXL2 transcripts are reduced in max2 seedlings, which could indicate negative feedback regulation by KAR/SL signaling. smax1 seed and seedling growth mimics the wild type treated with KAR/SL, but smax1 seedlings are still responsive to 2H-furo[2,3-c]pyran-2-one (KAR2) or GR24. We conclude that SMAX1 is an important component of KAR/SL signaling during seed germination and seedling growth but is not necessary for all MAX2-dependent responses. We hypothesize that one or more SMXL proteins may also act downstream of MAX2 to control the diverse developmental responses to KARs and SLs.
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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.