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@ARTICLE{Hummel:59274,
      author       = {Hummel, G. M. and Schurr, U. and Baldwin, I. T. and Walter,
                      A.},
      title        = {{H}erbivore-induced jasmonic acid bursts in leaves of
                      {N}icotiana attenuata mediate short-term reductions in root
                      growth},
      journal      = {Plant, cell $\&$ environment},
      volume       = {32},
      issn         = {0140-7791},
      address      = {Oxford [u.a.]},
      publisher    = {Wiley-Blackwell},
      reportid     = {PreJuSER-59274},
      pages        = {134 - 143},
      year         = {2009},
      note         = {We would like to thank Eva Rothe, Jinsong Wu and Norbert
                      Kirchgessner for their assistance. We are also grateful to
                      Jon F. Fobes (AgroFresh Inc) for the generous gift of 1-MCP.
                      We would like to acknowledge stimulating discussions with
                      all members of the Virtual Institute for Biotic
                      Interactions. This work was financially supported by the
                      Helmholtz Association of German Research Centers.},
      abstract     = {Root growth in Nicotiana attenuata is transiently reduced
                      after application of oral secretions (OS) of Manduca sexta
                      larvae to wounds in leaves. Feeding of M. sexta or OS
                      elicitation is known to result in jasmonic acid (JA) and
                      ethylene bursts, and activates a suite of defence responses.
                      Because both plant hormones are known to strongly reduce
                      root growth, their activation might account for the observed
                      reduction of root growth following herbivory. To test this
                      hypothesis, we measured primary root growth with digital
                      image sequence processing at high temporal resolution in
                      antisense-lipoxygenase 3 (asLOX3) and inverted
                      repeat-coronatin-insensitive 1 (irCOI1) seedlings which are
                      impaired in JA biosynthesis and perception, respectively,
                      and wild-type (WT) seedlings. Higher root growth rates in
                      irCOI1 compared with WT were observed after OS elicitation.
                      The dynamics of wound-induced root growth reduction coincide
                      with the dynamics of root growth reduction induced by
                      external application of methyl JA. In an experiment with
                      1-methylcyclopropen (1-MCP), a potent ethylene receptor
                      blocker, no wounding-specific difference between growth of
                      1-MCP-treated plants and non-treated plants was observed,
                      suggesting that wound-induced endogenous JA and not ethylene
                      mediates the wounding-specific reduction in root growth.
                      Yet, inhibiting the ethylene response by applying 1-MCP led
                      to markedly increased root growth compared with that of
                      control plants, indicating that ethylene normally suppresses
                      plant growth in N. attenuata seedlings.},
      keywords     = {Animals / Cyclopentanes: metabolism / Cyclopropanes:
                      pharmacology / Ethylenes: metabolism / Gene Expression
                      Regulation, Plant / Manduca: physiology / Oxylipins:
                      metabolism / Plant Growth Regulators: metabolism / Plant
                      Leaves: genetics / Plant Leaves: growth $\&$ development /
                      Plant Leaves: metabolism / Plant Roots: drug effects / Plant
                      Roots: genetics / Plant Roots: growth $\&$ development /
                      Plant Roots: metabolism / Tobacco: drug effects / Tobacco:
                      genetics / Tobacco: growth $\&$ development / Tobacco:
                      metabolism / Cyclopentanes (NLM Chemicals) / Cyclopropanes
                      (NLM Chemicals) / Ethylenes (NLM Chemicals) / Oxylipins (NLM
                      Chemicals) / Plant Growth Regulators (NLM Chemicals) /
                      1-methylcyclopropene (NLM Chemicals) / jasmonic acid (NLM
                      Chemicals) / ethylene (NLM Chemicals) / J (WoSType)},
      cin          = {ICG-3},
      ddc          = {570},
      cid          = {I:(DE-Juel1)ICG-3-20090406},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Plant Sciences},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:19054344},
      UT           = {WOS:000262349100004},
      doi          = {10.1111/j.1365-3040.2008.01905.x},
      url          = {https://juser.fz-juelich.de/record/59274},
}