Combined GC- and UHPLC-HR-MS Based Metabolomics to Analyze Durable Anti-fungal Resistance Processes in Cereals

Authors

  • Rahel Bucher Department of Chemistry University of Zurich Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
  • Daniel Veyel Max Planck Institute of Molecular Plant Physiology Am Mühlenberg 1, DE-14476 Potsdam-Golm, Germany
  • Lothar Willmitzer Max Planck Institute of Molecular Plant Physiology Am Mühlenberg 1, DE-14476 Potsdam-Golm, Germany
  • Simon Krattinger Department of Plant and Microbial Biology University of Zurich Zollikerstrasse 107, CH-8008 Zurich, Switzerland
  • Beat Keller Department of Plant and Microbial Biology University of Zurich Zollikerstrasse 107, CH-8008 Zurich, Switzerland
  • Laurent Bigler Department of Chemistry University of Zurich Winterthurerstrasse 190, CH-8057 Zurich, Switzerland. laurent.bigler@chem.uzh.ch

DOI:

https://doi.org/10.2533/chimia.2017.156

Keywords:

Lr34/yr18/sr57/pm38, Mass spectrometry, Plant defense, Plant metabolomics

Abstract

Introduction of durable resistance genes in crops is an important strategy to prevent yield loss caused by pathogens. The durable multi-pathogen resistance gene Lr34 originating from wheat is widely used in breeding, and is functionally transferable to barley and rice. The molecular resistance mechanism of Lr34, encoding for an adenosine triphosphate-binding cassette transporter, is not known yet. To understand the molecular function and the defense response of durable disease resistance in cereals, the metabolic response of Lr34 was investigated in, except for the Lr34 gene, genetically identical lines of barley, rice and wheat. A broad range of compounds including primary, secondary and lipophilic metabolites were analyzed by a combination of gas (GC) and liquid chromatography (LC) mass spectrometry (MS) based methods. Data from metabolomics correlated well with transcriptomics data for plant defense responses such as the formation of anti-fungal hordatines or the components of the glyoxylate cycle. Induction of the glyoxylate cycle found in transgenic Lr34 rice grown in the greenhouse was confirmed in field-grown natural Lr34 wheat. Constitutively active plant defense responses were observed in the different cereals.

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Published

2017-04-26

How to Cite

[1]
R. Bucher, D. Veyel, L. Willmitzer, S. Krattinger, B. Keller, L. Bigler, Chimia 2017, 71, 156, DOI: 10.2533/chimia.2017.156.