Cited by 1,954Plant-Microbe Interactions and ImmunityLegume Nitrogen Fixing SymbiosisPlant Molecular Biology Research

Indole-3-acetic acid in microbial and microorganism-plant signaling

Open access
Spaepen, Stijn, Vanderleyden, Jos, Remans, Roseline·2007·FEMS Microbiology Reviews

Abstract

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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Crossref · 10.1111/j.1574-6976.2007.00072.x

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  • Phytohormonal production in plant-associated bacteria ranges from auxins, cytokinins, gibberellins, abscisic acid, ACC deaminase activity to the synthesis of volatile hydrocarbons with hormonal activity.

    “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”

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Research works printed but not linked: 5

  1. Camerini S, Senatore B, Imperlini E, Bianco C, Miraglia E, Lonardo E & Defez R (2004) Improve legume yield by phytohormone release from soil bacteria. Legumes for the Benefit of Agriculture, Nutrition and the Environment (European Association for Grain Legume Research, eds), pp. 127-128.
  2. Fallik E, Sarig S & Okon Y (1994) Morphology and physiology of plant roots associated with Azospirillum. Azospirillum-Plant Associations (Okon Y, ed), pp. 77-85. CRC Press, Boca Raton.
  3. Gysegom P (2005) Study of the transcriptional regulation of a key gene in indole-3-acetic acid biosynthesis in Azospirillum brasilense. PhD thesis, K.U. Leuven.
  4. Hartmann A & Zimmer W (1994) Physiology of Azospirillum. Azospirillum/Plant Associations (Okon Y, ed), pp. 15-39. CRC Press, Boca Raton.
  5. Theunis M (2005) IAA biosynthesis in rhizobia and its potential role in symbiosis. PhD thesis, Universiteit Antwerpen.

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Authors
Spaepen, S., Vanderleyden, J., & Remans, R.
Affiliations
KU Leuven (BE)
Venue
FEMS Microbiology Reviews
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
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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