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Title

Volatiles from the fungal phytopathogen Penicillium aurantiogriseum modulate root metabolism and architecture through proteome resetting

AuthorsGarcía-Gómez, Pablo CSIC ORCID; Bahaji, Abdellatif CSIC ORCID ; Gámez-Arcas, Samuel; Muñoz Pérez, Francisco José CSIC ORCID ; Sánchez-López, Ángela María CSIC ORCID ; Almagro, Goizeder CSIC ORCID ; Baroja-Fernández, Edurne CSIC ORCID CVN ; Ameztoy, Kinia CSIC ORCID CVN; Diego, Nuria de; Ugena, Lydia; Spíchal, Lukáš; Doležal, Karel; Hajirezaei, Mohammad‐Reza; Romero, Luis C. CSIC ORCID ; García, Irene CSIC ORCID ; Pozueta Romero, Javier CSIC ORCID
KeywordsBiostimulants
Cyanide scavenging
Growth promotion
Hormone signaling
Microbial volatile compounds
Photosynthesis
Plant‐microbe interaction
Proteomics
Issue DateOct-2020
PublisherJohn Wiley & Sons
CitationPlant, Cell and Environment 43(10): 2551-2570 (2020)
AbstractVolatile compounds (VCs) emitted by the fungal phytopathogen Penicillium aurantiogriseum promote root growth and developmental changes in Arabidopsis. Here we characterized the metabolic and molecular responses of roots to fungal volatiles. Proteomic analyses revealed that these compounds reduce the levels of aquaporins, the iron carrier IRT1 and apoplastic peroxidases. Fungal VCs also increased the levels of enzymes involved in the production of mevalonate (MVA)‐derived isoprenoids, nitrogen assimilation and conversion of methionine to ethylene and cyanide. Consistently, fungal VC‐treated roots accumulated high levels of hydrogen peroxide (H2O2), MVA‐derived cytokinins, ethylene, cyanide and long‐distance nitrogen transport amino acids. qRT‐PCR analyses showed that many proteins differentially expressed by fungal VCs are encoded by VC non‐responsive genes. Expression patterns of hormone reporters and developmental characterization of mutants provided evidence for the involvement of cyanide scavenging and enhanced auxin, ethylene, cytokinin and H2O2 signaling in the root architecture changes promoted by fungal VCs. Our findings show that VCs from P. aurantiogriseum modify root metabolism and architecture, and improve nutrient and water use efficiencies through transcriptionally and non‐transcriptionally regulated proteome resetting mechanisms. Some of these mechanisms are subject to long‐distance regulation by photosynthesis and differ from those triggered by VCs emitted by beneficial microorganisms.
Publisher version (URL)https://doi.org/10.1111/pce.13817
URIhttp://hdl.handle.net/10261/216078
DOI10.1111/pce.13817
ISSN0140-7791
E-ISSN1365-3040
Appears in Collections:(IDAB) Artículos




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