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@ARTICLE{Ferrieri:53637,
      author       = {Ferrieri, A.P. and Thorpe, M. R. and Ferrieri, R. A.},
      title        = {{S}timulating natural defenses in poplar clones ({OP}-367)
                      increases plant metabolism of carbon tetrachloride},
      journal      = {International journal of phytoremediation},
      volume       = {8},
      issn         = {1522-6514},
      address      = {Philadelphia, Pa.},
      publisher    = {Taylor $\&$ Francis},
      reportid     = {PreJuSER-53637},
      pages        = {233 - 243},
      year         = {2006},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {Groundwater contamination by carbon tetrachloride (CCl4)
                      presents a health risk as a potential carcinogen and
                      pollutant that is capable of depleting the ozone layer.
                      Although use of poplar trees in a phytoremediation capacity
                      has proven to be cost effective for cleaning contaminated
                      sites, minimizing leaf emission of volatile contaminants
                      remains a pressing issue. We hypothesized that recently
                      fixed carbon plays a key role in CCl4 metabolism in planta
                      yielding nonvolatile trichloroacetic acid (TCA) and that the
                      extent of this metabolism can be altered by heightening
                      plant defenses. Labeling intact leaves with (11)CO2 (t 1/2
                      20.4 m) can test this hypothesis, because the extremely
                      short half-life of the tracer reflects only those processes
                      involving recently fixed carbon. Using radio-HPLC analysis,
                      we observed [(11)C]TCA from leaf extract from poplar clones
                      (OP-367) whose roots were exposed to a saturated solution of
                      CCl4 (520 ppm). Autoradiography of [(11)C]photosynthate
                      showed increased leaf export and partitioning to the apex
                      within 24 h of CCl4 exposure, suggesting that changes in
                      plant metabolism and partitioning of recently fixed carbon
                      occur rapidly. Additionally, leaf CCl4 emissions were
                      highest in the morning, when carbon pools are low,
                      suggesting a link between contaminant metabolism and leaf
                      carbon utilization. Further, treatment with methyljasmonate,
                      a plant hormone implicated in defense signal transduction,
                      reduced leaf CCl4 emissions two-fold due to the increased
                      formation of TCA.},
      keywords     = {Acetic Acids: pharmacology / Carbon Radioisotopes: analysis
                      / Carbon Tetrachloride: metabolism / Chromatography, High
                      Pressure Liquid / Cyclopentanes: pharmacology / Oxylipins /
                      Photosynthesis: drug effects / Plant Growth Regulators:
                      pharmacology / Plant Leaves: metabolism / Populus: drug
                      effects / Populus: metabolism / Trichloroacetic Acid:
                      metabolism / Acetic Acids (NLM Chemicals) / Carbon
                      Radioisotopes (NLM Chemicals) / Cyclopentanes (NLM
                      Chemicals) / Oxylipins (NLM Chemicals) / Plant Growth
                      Regulators (NLM Chemicals) / methyl jasmonate (NLM
                      Chemicals) / Carbon Tetrachloride (NLM Chemicals) /
                      Trichloroacetic Acid (NLM Chemicals) / J (WoSType)},
      cin          = {ICG-III},
      ddc          = {580},
      cid          = {I:(DE-Juel1)VDB49},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Environmental Sciences},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:17120527},
      UT           = {WOS:000240701200004},
      doi          = {10.1080/15226510600846780},
      url          = {https://juser.fz-juelich.de/record/53637},
}