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Indole-3-acetic acid in microbial and microorganism-plant signaling
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Diverse bacterial species possess the ability to produce the auxin phytohormone indole-3-acetic acid (IAA). Different biosynthesis pathways have been identified and redundancy for IAA biosynthesis is widespread among plant-associated bacteria. Interactions between IAA-producing bacteria and plants lead to diverse outcomes on the plant side, varying from pathogenesis to phyto-stimulation. Reviewing the role of bacterial IAA in different microorganism-plant interactions highlights the fact that bacteria use this phytohormone to interact with plants as part of their colonization strategy, including phyto-stimulation and circumvention of basal plant defense mechanisms. Moreover, several recent reports indicate that IAA can also be a signaling molecule in bacteria and therefore can have a direct effect on bacterial physiology. This review discusses past and recent data, and emerging views on IAA, a well-known phytohormone, as a microbial metabolic and signaling molecule.
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“It ranges from the production of auxins (Spaepen et al., 2007), cytokinins (Arkhipova et al., 2007), gibberellins (Bottini et al., 2004), abscisic acid (Karadeniz et al., 2006), 1-aminocyclopropane-1-carboxylate (ACC) deaminase activity (Glick et al., 2007) to the synthesis of volatile hydrocarbons (acetoin and 2,3-butanediol) with hormonal activity (Ping and Boland, 2004;Ryu et al., 2003;Kai et a”
From Intensify production, transform biomass to energy and novel goods and protect soils in Europe—A vision how to mobilize marginal lands (2018) · cites this paper as Spaepen et al., 2007
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Metadata
- Authors
- Spaepen, S., Vanderleyden, J., & Remans, R.
- Affiliations
- KU Leuven (BE)
- Venue
- FEMS Microbiology Reviews
- Publisher
- Oxford University Press (OUP)
- Published
- 2007-07
- Volume
- 31
- Issue
- 4
- Pages
- 425-448
- ISSN
- 0168-6445 (ISSN-L)
- 1574-6976
- OpenAlex
- W2053087257
- Cited by
- 1,954
- References
- 205
- Citations by year
- 2026: 119 · 2025: 124 · 2024: 117 · 2023: 119 · 2022: 170 · 2021: 166 · 2020: 131 · 2019: 142 · 2018: 118 · 2017: 105 · 2016: 110 · 2015: 83 · 2014: 99 · 2013: 102 · 2012: 54
- FWCI
- 3.82
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- FEMS Microbiology Reviews (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Vlaamse Interuniversitaire Raad
- Vlaamse regering
- Topics
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant-Microbe Interactions and Immunity
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Legume Nitrogen Fixing Symbiosis
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Molecular Biology Research
- Keywords
- indole-3-acetic acid, auxin biosynthesis, plant-associated bacteria, rhizosphere bacteria, plant-microbe interactions, bacterial signaling, plant hormone signaling, plant defense evasion, plant growth promotion, bacterial colonization, plant pathogenesis
- MeSH terms
- Bacteria, Bacterial Proteins, Indoleacetic Acids, Plant Diseases, Plant Growth Regulators, Plants, Signal Transduction, Gene Expression Regulation, Bacterial, Plant Development
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