| Jasmonic acid does not mediate root growth responses to wounding in Arabidopsis thaliana. | |
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MedLine Citation:
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PMID: 19895400 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Jasmonic acid (JA) is a crucial plant defence signalling substance that has recently been shown to mediate herbivory-induced root growth reduction in the ecological model species Nicotiana attenuata. To clarify whether JA-induced reduction of root growth might be a general response increasing plant fitness under biotic stress, a suite of experiments was performed with the model plant Arabidopsis thaliana. JA bursts were elicited in leaves of A. thaliana in different ways. Root growth reduction was neither induced by foliar application of herbivore oral secretions nor by direct application of methyl jasmonate to leaves. Root growth reduction was observed when leaves were infected with the pathogen Pseudomonas syringae pv. tomato, which persistently induces the JA signalling pathway. Yet, high resolution growth analyses of this effect in wild type and JA biosynthesis knock-out mutants showed that it was elicited by the bacterial toxin coronatine that suggests ethylene- but not JA-induced root growth reduction in A. thaliana. Overall, the results demonstrate that the reaction of root growth to herbivore-induced JA signalling differs among species, which is discussed in the context of different ecological defence strategies among species. |
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Authors:
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Lilian Schmidt; Gr?goire M Hummel; Matthias Sch?ttner; Ulrich Schurr; Achim Walter |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-11-04 |
Journal Detail:
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Title: Plant, cell & environment Volume: 33 ISSN: 1365-3040 ISO Abbreviation: Plant Cell Environ. Publication Date: 2010 Jan |
Date Detail:
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Created Date: 2010-01-14 Completed Date: 2010-03-11 Revised Date: 2010-05-21 |
Medline Journal Info:
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Nlm Unique ID: 9309004 Medline TA: Plant Cell Environ Country: United States |
Other Details:
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Languages: eng Pagination: 104-16 Citation Subset: IM |
Affiliation:
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Institut Phytosph?re (ICG-3), Forschungszentrum J?lich GmbH, J?lich, Germany. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acetic Acids
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pharmacology Amino Acids / pharmacology Animals Arabidopsis / growth & development, metabolism* Cyclopentanes / metabolism*, pharmacology Cyclopropanes / pharmacology Ethylenes / metabolism Gene Knockout Techniques Indenes / pharmacology Oxylipins / metabolism*, pharmacology Plant Leaves / metabolism Plant Roots / growth & development* Pseudomonas syringae Signal Transduction Spodoptera |
| Chemical | |
Reg. No./Substance:
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0/Acetic Acids; 0/Amino Acids; 0/Cyclopentanes; 0/Cyclopropanes; 0/Ethylenes; 0/Indenes; 0/Oxylipins; 1211-29-6/methyl jasmonate; 62251-96-1/coronatine; 6894-38-8/jasmonic acid; 74-85-1/ethylene |
| Comments/Corrections | |
Comment In:
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Plant Signal Behav. 2010 Mar;5(3):290-2
[PMID:
20037470
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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