Cited by 1,308Plant-Microbe Interactions and ImmunityInsect-Plant Interactions and ControlPlant Pathogenic Bacteria Studies

Bacterial Volatiles Induce Systemic Resistance in Arabidopsis

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Ryu, Choong-Min, Farag, Mohamed A., Hu, Chia-Hui, Reddy, Munagala S., Kloepper, Joseph W., Paré, Paul W.·2004·PLANT PHYSIOLOGY

Abstract

Plant growth-promoting rhizobacteria, in association with plant roots, can trigger induced systemic resistance (ISR). Considering that low-molecular weight volatile hormone analogues such as methyl jasmonate and methyl salicylate can trigger defense responses in plants, we examined whether volatile organic compounds (VOCs) associated with rhizobacteria can initiate ISR. In Arabidopsis seedlings exposed to bacterial volatile blends from Bacillus subtilis GB03 and Bacillus amyloliquefaciens IN937a, disease severity by the bacterial pathogen Erwinia carotovora subsp. carotovora was significantly reduced compared with seedlings not exposed to bacterial volatiles before pathogen inoculation. Exposure to VOCs from rhizobacteria for as little as 4 d was sufficient to activate ISR in Arabidopsis seedlings. Chemical analysis of the bacterial volatile emissions revealed the release of a series of low-molecular weight hydrocarbons including the growth promoting VOC (2R,3R)-(-)-butanediol. Exogenous application of racemic mixture of (RR) and (SS) isomers of 2,3-butanediol was found to trigger ISR and transgenic lines of B. subtilis that emitted reduced levels of 2,3-butanediol and acetoin conferred reduced Arabidopsis protection to pathogen infection compared with seedlings exposed to VOCs from wild-type bacterial lines. Using transgenic and mutant lines of Arabidopsis, we provide evidence that the signaling pathway activated by volatiles from GB03 is dependent on ethylene, albeit independent of the salicylic acid or jasmonic acid signaling pathways. This study provides new insight into the role of bacteria VOCs as initiators of defense responses in plants.

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Authors
Ryu, C.-M., Farag, M. A., Hu, C.-H., Reddy, M. S., Kloepper, J. W., & Paré, P. W.
Affiliations
  • Texas Tech University (US)
  • Department of Entomology and Plant Pathology, Auburn University, 209 Life Sciences Building, Auburn, Alabama 36849 (C.-M.R., C.-H.H., M.S.R., J.W.K.); and Department of Chemistry and Biochemistry, Texas Tech University, 1 Chemistry Drive; Lubbock, Texas 79409 (M.A.F., P.W.P.)
Venue
PLANT PHYSIOLOGY
Published
2004-03-01
Volume
134
Issue
3
Pages
1017-1026
ISSN
  • 0032-0889 (ISSN-L)
  • 1532-2548
OpenAlex
W2123767496
Cited by
1,308
References
51
Citations by year
2026: 50 · 2025: 59 · 2024: 64 · 2023: 75 · 2022: 96 · 2021: 96 · 2020: 102 · 2019: 80 · 2018: 78 · 2017: 84 · 2016: 77 · 2015: 68 · 2014: 64 · 2013: 55 · 2012: 47
FWCI
25.28
Type
journal article
Language
en
Open access
Locations
  • PLANT PHYSIOLOGY (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • U.S. Department of Agriculture
  • Welch Foundation
  • Ohio State University
  • Herman Frasch Foundation for Chemical Research
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant-Microbe Interactions and Immunity
  • Life Sciences › Agricultural and Biological Sciences › Insect Science › Insect-Plant Interactions and Control
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Pathogenic Bacteria Studies
Keywords
bacterial volatiles, induced systemic resistance, plant growth-promoting rhizobacteria, Bacillus subtilis, Bacillus amyloliquefaciens, Erwinia carotovora subsp. carotovora, 2,3-butanediol, acetoin, ethylene signaling, plant defense response, Arabidopsis thaliana, low molecular weight hydrocarbons
MeSH terms
Butylene Glycols, Mutation, Plant Diseases, Rhizobiaceae, Symbiosis, Volatilization, Signal Transduction, Arabidopsis, Plants, Genetically Modified

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