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240506s2024 xx |||||o 00| ||eng c |
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|a 10.1016/j.jplph.2024.154259
|2 doi
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|a pubmed24n1413.xml
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|a eng
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|a Tinoco-Tafolla, Hugo Alejandro
|e verfasserin
|4 aut
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|a Sucrose supplements modulate the Pseudomonas chlororaphis-Arabidopsis thaliana interaction via decreasing the production of phenazines and enhancing the root auxin response
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 19.05.2024
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|a Date Revised 19.05.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2024 Elsevier GmbH. All rights reserved.
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|a Management of the plant microbiome may help support food needs for the human population. Bacteria influence plants through enhancing nutrient uptake, metabolism, photosynthesis, biomass production and/or reinforcing immunity. However, information into how these microbes behave under different growth conditions is missing. In this work, we tested how carbon supplements modulate the interaction of Pseudomonas chlororaphis with Arabidopsis thaliana. P. chlororaphis streaks strongly repressed primary root growth, lateral root formation and ultimately, biomass production. Noteworthy, increasing sucrose availability into the media from 0 to 2.4% restored plant growth and promoted lateral root formation in bacterized seedlings. This effect could not be observed by supplementing sucrose to leaves only, indicating that the interaction was strongly modulated by bacterial access to sugar. Total phenazine content decreased in the bacteria grown in high (2.4%) sucrose medium, and conversely, the expression of phzH and pslA genes were diminished by sugar supply. Pyocyanin antagonized the promoting effects of sucrose in lateral root formation and biomass production in inoculated seedlings, indicating that this virulence factor accounts for growth repression during the plant-bacterial interaction. Defence reporter transgenes PR-1::GUS and LOX2::GUS were induced in leaves, while the expression of the auxin-inducible, synthetic reporter gene DR5::GUS was enhanced in the roots of bacterized seedlings at low and high sucrose treatments, which suggests that growth/defence trade-offs in plants are critically modulated by P. chlororaphis. Collectively, our data suggest that bacterial carbon nutrition controls the outcome of the relation with plants
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|a Journal Article
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|a Arabidopsis development
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|a Defence
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|a Phenazines
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|a Pseudomonas
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|a Sugars
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1 |
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|a López-Hernández, José
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ortiz-Castro, Randy
|e verfasserin
|4 aut
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| 700 |
1 |
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|a López-Bucio, José
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Reyes de la Cruz, Homero
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Campos-García, Jesús
|e verfasserin
|4 aut
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| 700 |
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|a López-Bucio, Jesús Salvador
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of plant physiology
|d 1979
|g 297(2024) vom: 15. Mai, Seite 154259
|w (DE-627)NLM098174622
|x 1618-1328
|7 nnns
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| 773 |
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|g volume:297
|g year:2024
|g day:15
|g month:05
|g pages:154259
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|u http://dx.doi.org/10.1016/j.jplph.2024.154259
|3 Volltext
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