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journal article Open Access Jun 03, 2013

Alterations in Root Exudation of Intercropped Tomato Mediated by the Arbuscular Mycorrhizal Fungus Glomus mosseae and the Soilborne Pathogen Fusarium oxysporum f.sp. lycopersici

Karin Hage‐Ahmed Anna Moyses Andreas Voglgruber Franz Hadacek Siegrid Steinkellner ORCID
Journal of Phytopathology Vol. 161 No. 11-12 pp. 763-773 · Wiley
View at Publisher Save 10.1111/jph.12130
Abstract
AbstractArbuscular mycorrhizal fungi (AMF) can control soilborne diseases such as Fusarium oxysporum f.sp. lycopersici (Fol). Root exudates play an important role in plant–microbe interactions in the rhizosphere, especially, in the initial phase of these interactions. In this work, we focus on (i) elucidating dynamics in root exudation of Solanum lycopersicum L. in an intercropping system due to AMF and/or Fol; (ii) its effect on Fol development in vitro; and (iii) the testing of the root exudate compounds identified in the chromatographic analyses in terms of effects on fungal growth in in vitro assays. GC‐MS analyses revealed an AMF‐dependent increase in sugars and decrease in organic acids, mainly glucose and malate. In the HPLC analyses, an increase in chlorogenic acid was evident in the combined treatment of AMF and Fol, which is to our knowledge the first report about an increase in chlorogenic acid in root exudates of AM plants challenged with Fol compared with plants inoculated with AMF only, clearly indicating changes in root exudation due to AMF and Fol. Root exudates of AMF tomato plants stimulate the germination rate of Fol, whereas the co‐inoculation of AMF and Fol leads to a reduction in spore germination. In the in vitro assays, citrate and chlorogenic acid could be identified as possible candidates for the reduction in Fol germination rate in the root exudates of the AMF+Fol treatment because they proved inhibition at concentrations naturally occurring in the rhizosphere.
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Recruitment of the rhizo-microbiome army: assembly determinants and engineering of the rhizosphere microbiome as a key to unlocking plant potential

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Frontiers in Microbiology
Effect of Secondary Metabolites of Tomato (Solanum lycopersicum) on Chemotaxis of Ralstonia solanacearum, Pathogen of Bacterial Wilt Disease

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Journal of Agricultural and Food Ch...
Metrics
56
Citations
45
References
Details
Published
Jun 03, 2013
Vol/Issue
161(11-12)
Pages
763-773
License
View
Authors
K
Karin Hage‐Ahmed

Division of Plant Protection, Department of Crop Sciences University of Natural Resources and Life Sciences Vienna Vienna Austria

A
Anna Moyses

Division of Plant Protection, Department of Crop Sciences University of Natural Resources and Life Sciences Vienna Vienna Austria

A
Andreas Voglgruber

Department for Chemical Ecology and Ecosystem Research, Faculty of Life Sciences University of Vienna Vienna Austria

F
Franz Hadacek

Department for Chemical Ecology and Ecosystem Research, Faculty of Life Sciences University of Vienna Vienna Austria; Plant Biochemistry Albrecht‐von‐Haller Institute, Georg‐August‐Universitaet Goettingen Germany

S
Siegrid Steinkellner

Division of Plant Protection, Department of Crop Sciences University of Natural Resources and Life Sciences Vienna Vienna Austria

Cite This Article
Karin Hage‐Ahmed, Anna Moyses, Andreas Voglgruber, et al. (2013). Alterations in Root Exudation of Intercropped Tomato Mediated by the Arbuscular Mycorrhizal Fungus Glomus mosseae and the Soilborne Pathogen Fusarium oxysporum f.sp. lycopersici. Journal of Phytopathology, 161(11-12), 763-773. https://doi.org/10.1111/jph.12130
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