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@ARTICLE{Lanoue:7810,
      author       = {Lanoue, A. and Burlat, V. and Henkes, G.J. and Koch, I. and
                      Schurr, U. and Röse, U.S.R.},
      title        = {{D}e novo biosynthesis of defense root exudates in response
                      to {F}usarium attack in barley},
      journal      = {The new phytologist},
      volume       = {185},
      issn         = {0028-646X},
      address      = {Oxford [u.a.]},
      publisher    = {Wiley-Blackwell},
      reportid     = {PreJuSER-7810},
      pages        = {577 - 588},
      year         = {2010},
      note         = {This work was supported by the EU-funded Marie-Curie
                      training network BIORHIZ (Biotic interactions in the
                      rhizosphere as structuring forces for plant communities,
                      MRTN-CT-2003-505090). The authors gratefully acknowledge Dr
                      Jurgen Wildt for his assistance in performing the
                      <SUP>13</SUP>CO<INF>2</INF> experiment, Dr Gregoire Hummel
                      for assistance and discussions, and Dr Arnd Kuhn for
                      comments on an earlier version of the manuscript.},
      abstract     = {Despite recent advances in elucidation of natural products
                      in root exudates, there are significant gaps in our
                      understanding of the ecological significance of products in
                      the rhizosphere. • Here, we investigated the potential of
                      barley (Hordeum vulgare) to secrete defense root exudates
                      when challenged by the soilborne pathogen Fusarium
                      graminearum. • Liquid chromatography with photodiode array
                      detection (LC-DAD) was used to profile induced
                      small-molecular-weight exudates. Thus, t-cinnamic,
                      p-coumaric, ferulic, syringic and vanillic acids were
                      assigned to plant metabolism and were induced within 2 d
                      after Fusarium inoculation. Biological tests demonstrated
                      the ability of those induced root exudates to inhibit the
                      germination of F. graminearum macroconidia. In vivo labeling
                      experiments with 13CO2 revealed that the secreted t-cinnamic
                      acid was synthesized de novo within 2 d of fungal
                      infection. Simultaneously to its root exudation, t-cinnamic
                      acid was accumulated in the roots. Microscopic analysis
                      showed that nonlignin cell wall phenolics were induced not
                      only in necrosed zones but in all root tissues. • Results
                      suggest that barley plants under attack respond by de novo
                      biosynthesis and secretion of compounds with antimicrobial
                      functions that may mediate natural disease resistance.},
      cin          = {ZCH / ICG-3 / JARA-ENERGY},
      ddc          = {580},
      cid          = {I:(DE-Juel1)ZCH-20090406 / I:(DE-Juel1)ICG-3-20090406 /
                      $I:(DE-82)080011_20140620$},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Plant Sciences},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000272893800021},
      pubmed       = {20699651},
      doi          = {10.1111/j.1469-8137.2009.03066.x},
      url          = {https://juser.fz-juelich.de/record/7810},
}