TY  - JOUR
AU  - Henkes, G.J.
AU  - Thorpe, M. R.
AU  - Minchin, P. E. H.
AU  - Schurr, U.
AU  - Röse, U. S. R.
TI  - Jasamonic acid treatment to part of the root system is consistent with simulated leaf herbivory, diverting recently assimilated carbon towards untreated roots within an hour
JO  - Plant, cell & environment
VL  - 31
SN  - 0140-7791
CY  - Oxford [u.a.]
PB  - Wiley-Blackwell
M1  - PreJuSER-61831
SP  - 1229 - 1236
PY  - 2008
N1  - We thank Marco Dautzenberg for his help in the preparation of <SUP>11</SUP>C tracer and plant labelling; and Gregoire Hummel and Arnaud Lanoue for their assistance and helpful discussions. This work emerged out of the Virtual Institute for Biotic Interactions (ViBi), which is financially funded by the Helmholtz Association of German Research Centres.
AB  - It is known that shoot application of jasmonic acid (JA) leads to an increased carbon export from leaves to stem and roots, and that root treatment with JA inhibits root growth. Using the radioisotope (11)C, we measured JA effects on carbon partitioning in sterile, split-root, barley plants. JA applied to one root half reduced carbon partitioning to the JA-treated tissue within minutes, whereas the untreated side showed a corresponding--but slower--increase. This response was not observed when instead of applying JA, the sink strength of one root half was reduced by cooling it: there was no enhanced partitioning to the untreated roots. The slower response in the JA-untreated roots, and the difference between the effect of JA and temperature, suggest that root JA treatment caused transduction of a signal from the treated roots to the shoot, leading to an increase in carbon allocation from the leaves to the untreated root tissue, as was indeed observed 10 min after the shoot application of JA. This supports the hypothesis that the response of some plant species to both leaf and root herbivores may be the diversion of resources to safer locations.
KW  - Analysis of Variance
KW  - Biological Transport: drug effects
KW  - Carbon: metabolism
KW  - Carbon Radioisotopes: metabolism
KW  - Cyclopentanes: pharmacology
KW  - Hordeum: drug effects
KW  - Hordeum: growth & development
KW  - Hordeum: metabolism
KW  - Oxylipins: pharmacology
KW  - Plant Growth Regulators: pharmacology
KW  - Plant Leaves: drug effects
KW  - Plant Leaves: growth & development
KW  - Plant Leaves: metabolism
KW  - Plant Roots: drug effects
KW  - Plant Roots: growth & development
KW  - Plant Roots: metabolism
KW  - Plant Shoots: drug effects
KW  - Plant Shoots: growth & development
KW  - Plant Shoots: metabolism
KW  - Signal Transduction: drug effects
KW  - Temperature
KW  - Carbon Radioisotopes (NLM Chemicals)
KW  - Cyclopentanes (NLM Chemicals)
KW  - Oxylipins (NLM Chemicals)
KW  - Plant Growth Regulators (NLM Chemicals)
KW  - jasmonic acid (NLM Chemicals)
KW  - Carbon (NLM Chemicals)
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
C6  - pmid:18507808
UR  - <Go to ISI:>//WOS:000258410600003
DO  - DOI:10.1111/j.1365-3040.2008.01828.x
UR  - https://juser.fz-juelich.de/record/61831
ER  -