ArticleThe Plant cell2022
Rice EIL1 interacts with OsIAAs to regulate auxin biosynthesis mediated by the tryptophan aminotransferase MHZ10/OsTAR2 during root ethylene responses.
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 17 papers.
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17 citing papers in PubMed, 36 citations in OpenAlex.
- Molecular and hormonal regulation of plant responses to waterlogging stress: From fundamental mechanisms to potential strategies for engineering crop tolerance.Plant communications · 2026Review
- Response of hidden architects to salt stress.Planta · 2025Review
- Genome-wide analysis of the CsAP2/ERF gene family of sweet orange (Citrus sinensis) and joint analysis of transcriptional metabolism under salt stress.Annals of botany · 2025Article
- Mechanosensing antagonizes ethylene signaling to promote root gravitropism in rice.Nature communications · 2025Article
- Crosstalk Between Ethylene and JA/ABA/Sugar Signalling in Plants Under Physiological and Stress Conditions.Molecular plant pathology · 2025Review
- Integrating Transcriptomics and Metabolomics to Comprehensively Analyze Phytohormone Regulatory Mechanisms inInternational journal of molecular sciences · 2025Article
- Review
- Characterization and Transcriptomic Analysis of Sorghum EIN/EIL Family and Identification of Their Roles in Internode Maturation.Plants (Basel, Switzerland) · 2024Article
- CELLULOSE SYNTHASE-LIKE C proteins modulate cell wall establishment during ethylene-mediated root growth inhibition in rice.The Plant cell · 2024Article
- Membrane protein MHZ3 regulates the on-off switch of ethylene signaling in rice.Nature communications · 2024Article
- Blocking of amino acid transporter OsAAP7 promoted tillering and yield by determining basic and neutral amino acids accumulation in rice.BMC plant biology · 2024Article
- Ethylene Modulates Rice Root Plasticity under Abiotic Stresses.Plants (Basel, Switzerland) · 2024Review
- Transcriptome profiling of two rice varieties reveals their molecular responses under high night-time temperature.PloS one · 2024Article
- Ethylene response factor ERF022 is involved in regulating Arabidopsis root growth.Plant molecular biology · 2023Article
- A translational regulator MHZ9 modulates ethylene signaling in rice.Nature communications · 2023Article
- Precise Regulation of the TAA1/TAR-YUCCA Auxin Biosynthesis Pathway in Plants.International journal of molecular sciences · 2023Review
- Protein Profiling ofPlants (Basel, Switzerland) · 2023Article
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12 authors at 2 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
Ethylene plays essential roles in adaptive growth of rice (Oryza sativa). Understanding of the crosstalk between ethylene and auxin (Aux) is limited in rice. Here, from an analysis of the root-specific ethylene-insensitive rice mutant mao hu zi 10 (mhz10), we identified the tryptophan aminotransferase (TAR) MHZ10/OsTAR2, which catalyzes the key step in indole-3-pyruvic acid-dependent Aux biosynthesis. Genetically, OsTAR2 acts downstream of ethylene signaling in root ethylene responses. ETHYLENE INSENSITIVE3 like1 (OsEIL1) directly activated OsTAR2 expression. Surprisingly, ethylene induction of OsTAR2 expression still required the Aux pathway. We also show that Os indole-3-acetic acid (IAA)1/9 and OsIAA21/31 physically interact with OsEIL1 and show promotive and repressive effects on OsEIL1-activated OsTAR2 promoter activity, respectively. These effects likely depend on their EAR motif-mediated histone acetylation/deacetylation modification. The special promoting activity of OsIAA1/9 on OsEIL1 may require both the EAR motifs and the flanking sequences for recruitment of histone acetyltransferase. The repressors OsIAA21/31 exhibit earlier degradation upon ethylene treatment than the activators OsIAA1/9 in a TIR1/AFB-dependent manner, allowing OsEIL1 activation by activators OsIAA1/9 for OsTAR2 expression and signal amplification. This study reveals a positive feedback regulation of ethylene signaling by Aux biosynthesis and highlights the crosstalk between ethylene and Aux pathways at a previously underappreciated level for root growth regulation in rice.
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