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Bitas V, McCartney N, Li N, et al. Fusarium Oxysporum Volatiles Enhance Plant Growth Via Affecting Auxin Transport and Signaling. Front Microbiol. 2015;6:1248doi: 10.3389/fmicb.2015.01248.
Bitas, V., McCartney, N., Li, N., Demers, J., Kim, J. E., Kim, H. S., Brown, K. M., & Kang, S. (2015). Fusarium Oxysporum Volatiles Enhance Plant Growth Via Affecting Auxin Transport and Signaling. Frontiers in microbiology, 61248. https://doi.org/10.3389/fmicb.2015.01248
Bitas, Vasileios, et al. "Fusarium Oxysporum Volatiles Enhance Plant Growth Via Affecting Auxin Transport and Signaling." Frontiers in microbiology vol. 6 (2015): 1248. doi: https://doi.org/10.3389/fmicb.2015.01248
Bitas V, McCartney N, Li N, Demers J, Kim JE, Kim HS, Brown KM, Kang S. Fusarium Oxysporum Volatiles Enhance Plant Growth Via Affecting Auxin Transport and Signaling. Front Microbiol. 2015 Nov 10;6:1248. doi: 10.3389/fmicb.2015.01248. eCollection 2015. PMID: 26617587; PMCID: PMC4639627.
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Front Microbiol. 2015 Nov 10;6:1248. doi: 10.3389/fmicb.2015.01248. eCollection 2015.

Fusarium Oxysporum Volatiles Enhance Plant Growth Via Affecting Auxin Transport and Signaling.

Frontiers in microbiology

Vasileios Bitas, Nathaniel McCartney, Ningxiao Li, Jill Demers, Jung-Eun Kim, Hye-Seon Kim, Kathleen M Brown, Seogchan Kang

Affiliations

  1. Department of Plant Pathology and Environmental Microbiology, The Pennsylvania State University, University Park PA, USA.
  2. Department of Entomology, The Pennsylvania State University, University Park PA, USA ; Center for Chemical Ecology, The Pennsylvania State University University Park, PA, USA.
  3. Intercollege Graduate Degree Program in Plant Biology, The Pennsylvania State University University Park, PA, USA.
  4. Intercollege Graduate Degree Program in Plant Biology, The Pennsylvania State University University Park, PA, USA ; Department of Plant Science, The Pennsylvania State University University Park, PA, USA.
  5. Department of Plant Pathology and Environmental Microbiology, The Pennsylvania State University, University Park PA, USA ; Center for Chemical Ecology, The Pennsylvania State University University Park, PA, USA ; Intercollege Graduate Degree Program in Plant Biology, The Pennsylvania State University University Park, PA, USA.

PMID: 26617587 PMCID: PMC4639627 DOI: 10.3389/fmicb.2015.01248

Abstract

Volatile organic compounds (VOCs) have well-documented roles in plant-plant communication and directing animal behavior. In this study, we examine the less understood roles of VOCs in plant-fungal relationships. Phylogenetically and ecologically diverse strains of Fusarium oxysporum, a fungal species complex that often resides in the rhizosphere of assorted plants, produce volatile compounds that augment shoot and root growth of Arabidopsis thaliana and tobacco. Growth responses of A. thaliana hormone signaling mutants and expression patterns of a GUS reporter gene under the auxin-responsive DR5 promoter supported the involvement of auxin signaling in F. oxysporum volatile-mediated growth enhancement. In addition, 1-naphthylthalamic acid, an inhibitor of auxin efflux, negated F. oxysporum volatile-mediated growth enhancement in both plants. Comparison of the profiles of volatile compounds produced by F. oxysporum strains that differentially affected plant growth suggests that the relative compositions of both growth inhibitory and stimulatory compounds may determine the degree of plant growth enhancement. Volatile-mediated signaling between fungi and plants may represent a potentially conserved, yet mostly overlooked, mechanism underpinning plant-fungus interactions and fungal niche adaption.

Keywords: auxin signaling; chemical effector; fungal ecology; plant growth and development; volatile organic compounds

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