ArticlePlant physiology2021
LATE MERISTEM IDENTITY1 regulates leaf margin development via the auxin transporter gene SMOOTH LEAF MARGIN1.
Article in Plant physiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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14 citing papers in PubMed, 29 citations in OpenAlex.
- Machine learning-guided leaf margin classification and discovery that BcPHB promoter selection rewires a BcPHB-BcLMI1 module to shape leaf margins in Brassica campestris.Molecular horticulture · 2026Article
- LMI1 and TCP4 homologs form a functional module to regulate lateral petal asymmetric bending in Delphinium anthriscifolium.The Plant journal : for cell and molecular biology · 2026Article
- Sweet Potato Gene Clusters Control Anthocyanin Biosynthesis and Leaf Morphology.Plant biotechnology journal · 2026Article
- Genome-Wide Identification and Expression Analysis of thePlants (Basel, Switzerland) · 2026Article
- Fine mapping of the dominant female sterility gene and novel model of hybrid seed production in cabbage (Brassica oleracea L. var. capitata).TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2025Article
- Homeodomain leucine zipper protein controls the lobed leaf formation by modulating auxin distribution in watermelon.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2025Article
- Reference-based genome assembly and comparative genomics of Calamus Brandisii Becc. for unveiling sex-specific genes for early gender detection.Functional & integrative genomics · 2024Article
- GHCU, a Molecular Chaperone, Regulates Leaf Curling by Modulating the Distribution of KNGH1 in Cotton.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024Article
- Multi-locus genome-wide association study and genomic prediction for flowering time in chrysanthemum.Planta · 2023Article
- The Roles of theInternational journal of molecular sciences · 2023Article
- Promoter variations in a homeobox gene, BrLMI1, contribute to leaf lobe formation in Brassica rapa ssp. chinensis Makino.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2023Article
- The Role ofInternational journal of molecular sciences · 2022Article
- Molecular mechanisms underlying leaf development, morphological diversification, and beyond.The Plant cell · 2022Review
- The Genetic Control of the Compound Leaf Patterning inFrontiers in plant science · 2021Review
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Authors and funding
13 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Plant leaves have evolved into diverse shapes and LATE MERISTEM IDENTITY1 (LMI1) and its putative paralogous genes encode homeodomain leucine zipper transcription factors that are proposed evolutionary hotspots for the regulation of leaf development in plants. However, the LMI1-mediated regulatory mechanism underlying leaf shape formation is largely unknown. MtLMI1a and MtLMI1b are putative orthologs of LMI1 in the model legume barrelclover (Medicago truncatula). Here, we investigated the role of MtLMI1a and MtLMI1b in leaf margin morphogenesis by characterizing loss-of-function mutants. MtLMI1a and MtLMI1b are expressed along leaf margin in a near-complementary pattern, and they redundantly promote development of leaf margin serrations, as revealed by the relatively smooth leaf margin in their double mutants. Moreover, MtLMI1s directly activate expression of SMOOTH LEAF MARGIN1 (SLM1), which encodes an auxin efflux carrier, thereby regulating auxin distribution along the leaf margin. Further analysis indicates that MtLMI1s genetically interact with NO APICAL MERISTEM (MtNAM) and the ARGONAUTE7 (MtAGO7)-mediated trans-acting short interfering RNA3 (TAS3 ta-siRNA) pathway to develop the final leaf margin shape. The participation of MtLMI1s in auxin-dependent leaf margin formation is interesting in the context of functional conservation. Furthermore, the diverse expression patterns of LMI1s and their putative paralogs within key domains are important drivers for functional specialization, despite their functional equivalency among species.
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