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Article

Disruption of putrescine export in experimentally evolved Ralstonia pseudosolanacearum enhances symbiosis with Mimosa pudica.

mBio - 14 Jan 2026

Cazalé Anne-Claire, Navarro Marvin, Doin de Moura Ginaini Grazielli, Hoarau David, Bellvert Floriant, Valière Sophie, Baroukh Caroline, Remigi Philippe, Guidot Alice, Capela Delphine

Abstract excerpt

Polyamines are essential molecules across all domains of life, but their role as signaling molecules in host-microbe interactions is increasingly recognized. However, because they are produced by both the host and the microbe, their dual origin makes their functional dissection challenging. The plant pathogen Ralstonia pseudosolanacearum GMI1000 secretes large amounts of putrescine both in vitro and in the xylem...

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PMID: 41328923
DOI: 10.1128/mbio.01225-25
PMCID: PMC12802222

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