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@ARTICLE{Thorpe:56253,
      author       = {Thorpe, M. R. and Ferrieri, A. P. and Herth, M. M. and
                      Ferrieri, R. A.},
      title        = {11{C}-imaging: methyl jasmonate moves in both phloem and
                      xylem, promotes transport of jasmonate, and of
                      photoassimilate even after proton transport is decoupled},
      journal      = {Planta},
      volume       = {226},
      issn         = {0032-0935},
      address      = {Berlin},
      publisher    = {Springer},
      reportid     = {PreJuSER-56253},
      pages        = {541 - 551},
      year         = {2007},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {The long-distance transport and actions of the phytohormone
                      methyl jasmonate (MeJA) were investigated by using the
                      short-lived positron-emitting isotope 11C to label both MeJA
                      and photoassimilate, and compare their transport properties
                      in the same tobacco plants (Nicotiana tabacum L.). There was
                      strong evidence that MeJA moves in both phloem and xylem
                      pathways, because MeJA was exported from the labeled region
                      of a mature leaf in the direction of phloem flow, but it
                      also moved into other parts of the same leaf and other
                      mature leaves against the direction of phloem flow. This
                      suggests that MeJA enters the phloem and moves in sieve tube
                      sap along with photoassimilate, but that vigorous exchange
                      between phloem and xylem allows movement in xylem to regions
                      which are sources of photoassimilate. This exchange may be
                      enhanced by the volatility of MeJA, which moved readily
                      between non-orthostichous vascular pathways, unlike reports
                      for jasmonic acid (which is not volatile). The phloem
                      loading of MeJA was found to be inhibited by
                      parachloromercuribenzenesulfonic acid (PCMBS) (a thiol
                      reagent known to inhibit membrane transporters), and by
                      protonophores carbonyl cyanide 3-chlorophenylhydrazone
                      (CCCP) and 2,4-dinitrophenol (DNP) suggesting proton
                      co-transport. MeJA was found to promote both its own
                      transport and that of recent photoassimilate within 60 min.
                      Furthermore, we found that MeJA can counter the inhibitory
                      effect of the uncoupling agent, CCCP, on sugar transport,
                      suggesting that MeJA affects the plasma membrane proton
                      gradient. We also found that MeJA's action may extend to the
                      sucrose transporter, since MeJA countered the inhibitory
                      effects of the sulfhydryl reagent, PCMBS, on the transport
                      of photoassimilate.},
      keywords     = {2,4-Dinitrophenol: pharmacology /
                      4-Chloromercuribenzenesulfonate: pharmacology / Acetic
                      Acids: metabolism / Biological Transport: drug effects /
                      Carbon Radioisotopes / Carbonyl Cyanide m-Chlorophenyl
                      Hydrazone: pharmacology / Cyclopentanes: metabolism /
                      Oxylipins / Phloem: metabolism / Photosynthesis / Tobacco:
                      drug effects / Tobacco: metabolism / Xylem: metabolism /
                      Acetic Acids (NLM Chemicals) / Carbon Radioisotopes (NLM
                      Chemicals) / Cyclopentanes (NLM Chemicals) / Oxylipins (NLM
                      Chemicals) / methyl jasmonate (NLM Chemicals) /
                      2,4-Dinitrophenol (NLM Chemicals) /
                      4-Chloromercuribenzenesulfonate (NLM Chemicals) / Carbonyl
                      Cyanide m-Chlorophenyl Hydrazone (NLM Chemicals) / jasmonic
                      acid (NLM Chemicals) / J (WoSType)},
      cin          = {ICG-3},
      ddc          = {580},
      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:17356850},
      UT           = {WOS:000247204800022},
      doi          = {10.1007/s00425-007-0503-5},
      url          = {https://juser.fz-juelich.de/record/56253},
}