ArticleThe New phytologist2021
Aldoximes are precursors of auxins in Arabidopsis and maize.
Article in The New phytologist, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
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19 citing papers in PubMed, 43 citations in OpenAlex.
- Aldoximes serve as auxin precursors and repress phenylpropanoid metabolism in tomato.bioRxiv : the preprint server for biology · 2026Article
- Recent Advances and Future Perspectives in Plant Auxin Biology.Plants (Basel, Switzerland) · 2026Article
- The IAOx-Dependent IAA Biosynthesis Pathway: Acquired Insights, Paradigm Shifts, and Unresolved Questions.Plants (Basel, Switzerland) · 2026Review
- The auxin gatekeepers: Evolution and diversification of the YUCCA family.The Plant journal : for cell and molecular biology · 2025Article
- The CYP71A, NIT, AMI, and IAMH gene families are dispensable for indole-3-acetaldoxime-mediated auxin biosynthesis in Arabidopsis.The Plant cell · 2025Article
- Phenylacetic acid metabolism in land plants: novel pathways and metabolites.Journal of experimental botany · 2025Article
- Genome-wide gene network uncover temporal and spatial changes of genes in auxin homeostasis during fruit development in strawberry (F. × ananassa).BMC plant biology · 2024Article
- Identification of tomato F-box proteins functioning in phenylpropanoid metabolism.Plant molecular biology · 2024Article
- Exploring the landscape of biofertilizers containing plant growth-promoting rhizobacteria in Iran: Progress and research prospects.Current research in microbial sciences · 2024Review
- Investigating the biosynthesis and roles of the auxin phenylacetic acid duringFrontiers in plant science · 2024Article
- Altered methionine metabolism impacts phenylpropanoid production and plant development in Arabidopsis thaliana.The Plant journal : for cell and molecular biology · 2023Article
- Developing multifunctional crops by engineering Brassicaceae glucosinolate pathways.Plant communications · 2023Review
- Do Opposites Attract? Auxin-Abscisic Acid Crosstalk: New Perspectives.International journal of molecular sciences · 2023Review
- Occurrence, Function, and Biosynthesis of the Natural Auxin Phenylacetic Acid (PAA) in Plants.Plants (Basel, Switzerland) · 2023Review
- Metabolic link between auxin production and specialized metabolites in Sorghum bicolor.Journal of experimental botany · 2023Article
- The Integration of Metabolomics and Transcriptomics Provides New Insights for the Identification of Genes Key to Auxin Synthesis at Different Growth Stages of Maize.International journal of molecular sciences · 2022Article
- Metabolite analysis of ArabidopsisPlant signaling & behavior · 2021Article
- Genome-Wide Comparative Analysis of R2R3 MYB Gene Family inFrontiers in plant science · 2021Article
- Identification of the Tyrosine- and Phenylalanine-Derived Soluble Metabolomes of Sorghum.Frontiers in plant science · 2021Article
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Authors and funding
11 authors at 2 institutions in 1 country.
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Abstract
Two natural auxins, phenylacetic acid (PAA) and indole-3-acetic acid (IAA), play crucial roles in plant growth and development. One route of IAA biosynthesis uses the glucosinolate intermediate indole-3-acetaldoxime (IAOx) as a precursor, which is thought to occur only in glucosinolate-producing plants in Brassicales. A recent study showed that overproducing phenylacetaldoxime (PAOx) in Arabidopsis increases PAA production. However, it remains unknown whether this increased PAA resulted from hydrolysis of PAOx-derived benzyl glucosinolate or, like IAOx-derived IAA, is directly converted from PAOx. If glucosinolate hydrolysis is not required, aldoxime-derived auxin biosynthesis may occur beyond Brassicales. To better understand aldoxime-derived auxin biosynthesis, we conducted an isotope-labelled aldoxime feeding assay using an Arabidopsis glucosinolate-deficient mutant sur1 and maize, and transcriptomics analysis. Our study demonstrated that the conversion of PAOx to PAA does not require glucosinolates in Arabidopsis. Furthermore, maize produces PAA and IAA from PAOx and IAOx, respectively, indicating that aldoxime-derived auxin biosynthesis also occurs in maize. Considering that aldoxime production occurs widely in the plant kingdom, aldoxime-derived auxin biosynthesis is likely to be more widespread than originally believed. A genome-wide transcriptomics study using PAOx-overproduction plants identified complex metabolic networks among IAA, PAA, phenylpropanoid and tryptophan metabolism.
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