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Review

C4 Bacterial Volatiles Improve Plant Health

1
Graduate Program in Genetics and Molecular Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas 13083-970, SP, Brazil
2
Brazilian BioRenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas 13081-100, SP, Brazil
3
Molecular Phytobacteriology Laboratory, Korea Research Institute of Bioscience & Biotechnology (KRIBB), Daejeon 34141, Korea
4
Biosystems and Bioengineering Program, University of Science and Technology, Daejeon 34141, Korea
*
Author to whom correspondence should be addressed.
Academic Editors: Anton Hartmann and Diogo Neves Proença
Pathogens 2021, 10(6), 682; https://doi.org/10.3390/pathogens10060682
Received: 13 April 2021 / Revised: 10 May 2021 / Accepted: 24 May 2021 / Published: 31 May 2021
(This article belongs to the Special Issue Biological Control of Phytopathogens: Mechanisms and Applications)
Plant growth-promoting rhizobacteria (PGPR) associated with plant roots can trigger plant growth promotion and induced systemic resistance. Several bacterial determinants including cell-wall components and secreted compounds have been identified to date. Here, we review a group of low-molecular-weight volatile compounds released by PGPR, which improve plant health, mostly by protecting plants against pathogen attack under greenhouse and field conditions. We particularly focus on C4 bacterial volatile compounds (BVCs), such as 2,3-butanediol and acetoin, which have been shown to activate the plant immune response and to promote plant growth at the molecular level as well as in large-scale field applications. We also disc/ uss the potential applications, metabolic engineering, and large-scale fermentation of C4 BVCs. The C4 bacterial volatiles act as airborne signals and therefore represent a new type of biocontrol agent. Further advances in the encapsulation procedure, together with the development of standards and guidelines, will promote the application of C4 volatiles in the field. View Full-Text
Keywords: C4 bacterial volatile compounds; plant growth-promoting rhizobacteria; induced systemic resistance; 2,3-butanediol C4 bacterial volatile compounds; plant growth-promoting rhizobacteria; induced systemic resistance; 2,3-butanediol
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MDPI and ACS Style

Silva Dias, B.H.; Jung, S.-H.; Castro Oliveira, J.V.d.; Ryu, C.-M. C4 Bacterial Volatiles Improve Plant Health. Pathogens 2021, 10, 682. https://doi.org/10.3390/pathogens10060682

AMA Style

Silva Dias BH, Jung S-H, Castro Oliveira JVd, Ryu C-M. C4 Bacterial Volatiles Improve Plant Health. Pathogens. 2021; 10(6):682. https://doi.org/10.3390/pathogens10060682

Chicago/Turabian Style

Silva Dias, Bruno H., Sung-Hee Jung, Juliana V.d. Castro Oliveira, and Choong-Min Ryu. 2021. "C4 Bacterial Volatiles Improve Plant Health" Pathogens 10, no. 6: 682. https://doi.org/10.3390/pathogens10060682

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