C
Claudio Valverde
Researcher at National University of Quilmes
Publications - 83
Citations - 2889
Claudio Valverde is an academic researcher from National University of Quilmes. The author has contributed to research in topics: Frankia & Actinorhizal plant. The author has an hindex of 24, co-authored 78 publications receiving 2606 citations. Previous affiliations of Claudio Valverde include University of Lausanne & National Scientific and Technical Research Council.
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Journal ArticleDOI
Genome characteristics of facultatively symbiotic Frankia sp. strains reflect host range and host plant biogeography.
Philippe Normand,Pascal Lapierre,Louis S. Tisa,Johann Peter Gogarten,Nicole Alloisio,Emilie Bagnarol,Carla A. Bassi,Alison M. Berry,Derek M. Bickhart,Nathalie Choisne,Arnaud Couloux,Benoit Cournoyer,Stéphane Cruveiller,Vincent Daubin,Nadia Demange,Maria Pilar Francino,Eugene Goltsman,Ying Huang,Olga R. Kopp,Laurent Labarre,Alla Lapidus,Céline Lavire,J Maréchal,Michele Martinez,Juliana E. Mastronunzio,Beth C. Mullin,James Niemann,Pierre Pujic,Tania Rawnsley,Zoé Rouy,Chantal Schenowitz,Anita Sellstedt,Fernando Tavares,Jeffrey P. Tomkins,David Vallenet,Claudio Valverde,Luis Gabriel Wall,Ying Wang,Claudine Médigue,David R. Benson +39 more
TL;DR: The results support the idea that major genome expansions as well as reductions can occur in facultative symbiotic soil bacteria as they respond to new environments in the context of their symbioses.
Journal ArticleDOI
Two GacA-Dependent Small RNAs Modulate the Quorum-Sensing Response in Pseudomonas aeruginosa†
Elisabeth Kay,Bérénice Humair,Valérie Dénervaud,Kathrin Riedel,Stéphanie Spahr,Leo Eberl,Claudio Valverde,Dieter Haas +7 more
TL;DR: In Pseudomonas aeruginosa, an rsmY rsmZ double mutant and a gacA mutant were similarly impaired in the synthesis of the quorum-sensing signal N-butanoyl-homoserine lactone, the disulfide bond-forming enzyme DsbA, and the exoproducts hydrogen cyanide, pyocyanin, elastase, chitinase, and chit in-binding protein.
Journal ArticleDOI
RsmY, a small regulatory RNA, is required in concert with RsmZ for GacA-dependent expression of biocontrol traits in Pseudomonas fluorescens CHA0.
TL;DR: Two small, untranslated RNAs, RsmY and RsmZ, are key factors that relieve RsmA‐mediated regulation of secondary metabolism and biocontrol traits in the GacS/GacA cascade of strain CHA0.
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Secondary Metabolites Help Biocontrol Strain Pseudomonas fluorescens CHA0 To Escape Protozoan Grazing
TL;DR: The results suggest that exometabolite production in biocontrol strain CHA0 may contribute to avoidance of protist grazing and help sustain higher populations in the rhizosphere, which may be a desirable and advantageous trait for competition with other bacteria for available resources.
Journal ArticleDOI
Posttranscriptional Repression of GacS/GacA-Controlled Genes by the RNA-Binding Protein RsmE Acting Together with RsmA in the Biocontrol Strain Pseudomonas fluorescens CHA0
TL;DR: RsmA and RsmE together account for maximal repression in the GacS/GacA cascade of strain CHA0, and the transcription and stability of both regulatory RNAs were strongly reduced in the rsmA rsmE double mutant.