M
Marc S. Marenda
Researcher at University of Melbourne
Publications - 91
Citations - 2034
Marc S. Marenda is an academic researcher from University of Melbourne. The author has contributed to research in topics: Biology & Mycoplasma agalactiae. The author has an hindex of 22, co-authored 74 publications receiving 1702 citations. Previous affiliations of Marc S. Marenda include French Institute of Health and Medical Research & École Normale Supérieure.
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Journal ArticleDOI
Being pathogenic, plastic, and sexual while living with a nearly minimal bacterial genome
Pascal Sirand-Pugnet,Carole Lartigue,Carole Lartigue,Marc S. Marenda,Daniel J. Jacob,Aurélien Barré,Valérie Barbe,Chantal Schenowitz,Sophie Mangenot,Arnaud Couloux,Béatrice Segurens,Antoine de Daruvar,Alain Blanchard,Alain Blanchard,Christine Citti +14 more
TL;DR: This first description of large-scale HGT among mycoplasmas sharing the same ecological niche challenges the generally accepted evolutionary scenario in which gene loss is the main driving force of myCoplasma evolution.
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Ralstonia solanacearum produces hrp-dependent pili that are required for PopA secretion but not for attachment of bacteria to plant cells.
Frédérique Van Gijsegem,Jacques Vasse,Jean‐Christophe Camus,Marc S. Marenda,Christian Boucher +4 more
TL;DR: It is shown that hrp genes are also involved in the biogenesis of pili that are mainly composed of the HrpY protein, which are produced at one pole of the bacterium and released into the external medium where they can form very long straight bundles.
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Alternative Translation Initiation of the Moloney Murine Leukemia Virus mRNA Controlled by Internal Ribosome Entry Involving the p57/PTB Splicing Factor
Stéphan Vagner,Axel Waysbort,Marc S. Marenda,Marie-Claire Gensac,François Amalric,Anne-Catherine Prats +5 more
TL;DR: It is demonstrated, by using bicistronic vectors expressed in COS-7 cells, that the Mo-MuLV mRNA leader drives translation initiation by internal ribosome entry, which implies an oligopyrimidine tract located 45 nucleotides upstream of AUG codon.
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prhJ and hrpG, two new components of the plant signal‐dependent regulatory cascade controlled by PrhA in Ralstonia solanacearum
TL;DR: A regulatory cascade is proposed in which plant cell signal(s) sensed by PrhA are transduced to the prhJ gene, whose predicted product controls hrpG gene expression, which activates the hrpB regulatory gene, and, subsequently, the remaining hrp transcriptional units in all known inducing conditions.
Journal ArticleDOI
PrhA controls a novel regulatory pathway required for the specific induction of Ralstonia solanacearum hrp genes in the presence of plant cells
Marc S. Marenda,Belén Brito,Didier Callard,Stéphane Genin,Patrick Barberis,Christian Boucher,Matthieu Arlat +6 more
TL;DR: It is shown that, upon co‐culture with Arabidopsis thaliana and tomato cell suspensions, the expression of the hrp transcriptional units 1, 2, 3 and 4 is induced 10‐ to 20‐fold more than in minimal medium, and a model suggesting that PrhA is a receptor for plant specific signals at the top of a novel hrp regulatory pathway is discussed.