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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},
}