Amel Chaïb

Dynamic adhesion device of phage OE33PA drives Gram-positive host recognition

Laura Schmitt, Amel Chaïb, Denis Ptchelkine, Eaazhisai Kandiah et autres

Abstract Bacteriophages (phages) infecting Gram-positive bacteria must bind to host receptors across thick cell walls to initiate infection, yet the underlying structural mechanisms remain unclear. Here, we report cryo-electron microscopy structures of the Oenococcus oeni siphophage OE33PA, providing the first atomic resolution …

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Dynamic adhesion device drives Gram-positive host recognition by the Oenococcus oeni phage OE33PA

L. Schmitt, Amel Chaïb, Denis Ptchelkine, Eaazhisai Kandiah et autres

Bacteriophages infecting Gram-positive bacteria must overcome thick cell walls to recognize their hosts, yet the underlying structural mechanisms remain unclear. Here, we report cryoelectron microscopy structures of the Oenococcus oeni siphophage OE33PA, providing the first atomic resolution view of a phage infecting …

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Quick and Cheap: Optimized Purification and Concentration of Bacteriophages Produced in Rich Culture Media

Amel Chaïb, Laura Schmitt, Adeline Goulet, Claire Le Marrec

, is a lactic acid bacterium that lives in harsh oenological ecosystems and grows only in rich and complex media such as Man-Rogosa-Sharpe (MRS) or fruit juice-based media in laboratory conditions. This raises experimental challenges in pure and concentrated phage preparations for …

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Characterization of strictly lytic phages infecting Oenococcus oeni from Merlot wines and proposal of a new genus

Yasma Barchi, Florencia Oviedo-Hernandez, Amel Chaïb, Cécile Philippe et autres

ABSTRACT Oenococcus oeni is the predominant lactic acid bacteria species in wine, where it performs the malolactic fermentation, which helps to secure and preserve wine quality. Here, we describe the morphological, biological, and genomic characterization of siphophage Krappator X 27 , a …

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Draft Genome Sequence of Oenococcus kitaharae CRBO2176, Isolated from Homemade Water Kefir

Yasma Barchi, Amel Chaïb, Florencia Oviedo-Hernandez, Marion Décossas et autres

Here, we announce the draft genome sequence of an Oenococcus kitaharae strain isolated from homemade water kefir in Bordeaux, France. O. kitaharae CRBO2176 is deposited at the Biological Resources Center Oenology (CRBO) of the Institute of Vine and Wine Science (ISVV; Villenave …

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Phage Encounters Recorded in CRISPR Arrays in the Genus Oenococcus

Yasma Barchi, Cécile Philippe, Amel Chaïb, Florencia Oviedo-Hernandez et autres

The Oenococcus genus comprises four recognized species, and members have been found in different types of beverages, including wine, kefir, cider and kombucha. In this work, we implemented two complementary strategies to assess whether oenococcal hosts of different species and habitats were …

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Phage-host interactions as a driver of population dynamics during wine fermentation: Betting on underdogs

Amel Chaïb, Cécile Philippe, Féty Jaomanjaka, Yasma Barchi et autres

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Exploration of CRISPR Arrays in Oenococcus genus

Yasma Barchi, Cécile Philippe, Amel Chaïb, Florencia Oviedo-Hernandez et autres

International audience

Assessment of the lysogenic status in the lactic acid bacterium O. oeni during the spontaneous malolactic fermentation of red wines

Amel Chaïb, Olivier Claisse, Elodie Delbarre, Jade Bosviel et autres

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lysogeny in Oenococcus oeni species : Impact on malolactic starters performance

Amel Chaïb

Oenococcus oeni est la bactérie lactique majoritairement responsable de la fermentation malolactique (FML) des vins. Elle est la cible de phages qui sont des virus spécifiques des bactéries. La vaste majorité des oenophages isolés sont tempérés selon la littérature scientifique. Ces phages …

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La lysogénie dans l'espèce Oenococcus oeni : incidence et impacts sur la performance de levains malolactiques

Amel Chaïb

Oenococcus oeni est la bactérie lactique majoritairement responsable de la fermentation malolactique (FML) des vins. Elle est la cible de phages qui sont des virus spécifiques des bactéries. La vaste majorité des oenophages isolés sont tempérés selon la littérature scientifique. Ces phages …

Distribution of Prophages in the Oenococcus oeni Species

Olivier Claisse, Amel Chaïb, Féty Jaomanjaka, Cécile Philippe et autres

Oenococcus oeni is the most exploited lactic acid bacterium in the wine industry and drives the malolactic fermentation of wines. Although prophage-like sequences have been identified in the species, many are not characterized, and a global view of their integration and distribution …

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