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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/erv309
|2 doi
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|a pubmed24n0835.xml
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|a (DE-627)NLM250525283
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|a (NLM)26136271
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Stes, Elisabeth
|e verfasserin
|4 aut
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|a Strigolactones as an auxiliary hormonal defence mechanism against leafy gall syndrome in Arabidopsis thaliana
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|c 2015
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 29.04.2016
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|a Date Revised 11.03.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © The Author 2015. Published by Oxford University Press on behalf of the Society for Experimental Biology.
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|a Leafy gall syndrome is the consequence of modified plant development in response to a mixture of cytokinins secreted by the biotrophic actinomycete Rhodococcus fascians. The similarity of the induced symptoms with the phenotype of plant mutants defective in strigolactone biosynthesis and signalling prompted an evaluation of the involvement of strigolactones in this pathology. All tested strigolactone-related Arabidopsis thaliana mutants were hypersensitive to R. fascians. Moreover, treatment with the synthetic strigolactone mixture GR24 and with the carotenoid cleavage dioxygenase inhibitor D2 illustrated that strigolactones acted as antagonistic compounds that restricted the morphogenic activity of R. fascians. Transcript profiling of the MORE AXILLARY GROWTH1 (MAX1), MAX2, MAX3, MAX4, and BRANCHED1 (BRC1) genes in the wild-type Columbia-0 accession and in different mutant backgrounds revealed that upregulation of strigolactone biosynthesis genes was triggered indirectly by the bacterial cytokinins via host-derived auxin and led to the activation of BRC1 expression, inhibiting the outgrowth of the newly developing shoots, a typical hallmark of leafy gall syndrome. Taken together, these data support the emerging insight that balances are critical for optimal leafy gall development: the long-lasting biotrophic interaction is possible only because the host activates a set of countermeasures-including the strigolactone response-in reaction to bacterial cytokinins to constrain the activity of R. fascians
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Apical dominance
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|a Gram-positive phytopathogen
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|a witches’ broom.
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|a Arabidopsis Proteins
|2 NLM
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|a Cytokinins
|2 NLM
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|a Lactones
|2 NLM
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|a Plant Growth Regulators
|2 NLM
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|a Depuydt, Stephen
|e verfasserin
|4 aut
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|a De Keyser, Annick
|e verfasserin
|4 aut
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|a Matthys, Cedrick
|e verfasserin
|4 aut
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|a Audenaert, Kris
|e verfasserin
|4 aut
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| 700 |
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|a Yoneyama, Koichi
|e verfasserin
|4 aut
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|a Werbrouck, Stefaan
|e verfasserin
|4 aut
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|a Goormachtig, Sofie
|e verfasserin
|4 aut
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| 700 |
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|a Vereecke, Danny
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 66(2015), 16 vom: 01. Aug., Seite 5123-34
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
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|g volume:66
|g year:2015
|g number:16
|g day:01
|g month:08
|g pages:5123-34
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|u http://dx.doi.org/10.1093/jxb/erv309
|3 Volltext
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