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@ARTICLE{Hummel:56262,
      author       = {Hummel, G. M. and Naumann, M. and Schurr, U. and Walter,
                      A.},
      title        = {{R}oot growth dynamics of {N}icotiana attenuata seedlings
                      are affected by simulated herbivore attack},
      journal      = {Plant, cell $\&$ environment},
      volume       = {30},
      issn         = {0140-7791},
      address      = {Oxford [u.a.]},
      publisher    = {Wiley-Blackwell},
      reportid     = {PreJuSER-56262},
      pages        = {1326 - 1336},
      year         = {2007},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {Many studies demonstrate resource-based trade-offs between
                      growth and defence on a large timescale. Yet, the short-term
                      dynamics of this growth reaction are still completely
                      unclear, making it difficult to explain growth-defence
                      trade-offs mechanistically. In this study, image-based
                      non-destructive methods were used to quantify root growth
                      reactions happening within hours following simulated
                      herbivore attack. The induction of wound reactions in
                      Nicotiana attenuata in the seedling stage led to transiently
                      decreased root growth rates. Application of the oral
                      secretion of the specialist herbivore Manduca sexta to the
                      leaves led to a transient decrease in root growth that was
                      more pronounced than if a mere mechanical wounding was
                      imposed. Root growth reduction was more pronounced than leaf
                      growth reduction. When fatty acid-amino acid conjugates
                      (FACs) were applied to wounds, root growth reduction
                      occurred in the same intensity as when oral secretion was
                      applied. Timing of the transient growth reduction coincided
                      with endogenous bursts of jasmonate (JA) and ethylene
                      emissions reported in literature. Simulation of a wound
                      response by applying methyl jasmonate (MeJA) led to more
                      prolonged negative effects on root growth. Increased
                      nicotine concentrations, trichome lengths and densities were
                      observed within 72 h in seedlings that were treated with
                      MeJA or that were mechanically wounded. Overall, these
                      reactions indicate that even in a very early developmental
                      stage, the diversion of plant metabolism from primary
                      (growth-sustaining) to secondary (defence-related)
                      metabolism can cause profound alterations of plant growth
                      performance.},
      keywords     = {Acetic Acids: pharmacology / Animals / Cyclopentanes:
                      pharmacology / Manduca: physiology / Nicotine: metabolism /
                      Oxylipins: pharmacology / Plant Diseases: immunology / Plant
                      Leaves: drug effects / Plant Leaves: growth $\&$ development
                      / Plant Leaves: parasitology / Plant Roots: drug effects /
                      Plant Roots: growth $\&$ development / Plant Roots:
                      parasitology / Seedling: drug effects / Seedling: growth
                      $\&$ development / Seedling: parasitology / Time Factors /
                      Tobacco: drug effects / Tobacco: growth $\&$ development /
                      Tobacco: parasitology / Acetic Acids (NLM Chemicals) /
                      Cyclopentanes (NLM Chemicals) / Oxylipins (NLM Chemicals) /
                      methyl jasmonate (NLM Chemicals) / Nicotine (NLM Chemicals)
                      / J (WoSType)},
      cin          = {ICG-3 / JARA-ENERGY},
      ddc          = {570},
      cid          = {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},
      pubmed       = {pmid:17727422},
      UT           = {WOS:000249423300011},
      doi          = {10.1111/j.1365-3040.2007.01718.x},
      url          = {https://juser.fz-juelich.de/record/56262},
}