Amneh Aoudi, Ossama Labiad, Ramdane Igalouzene, Ousséma Mejri, Maxime Sanchez, Maxime Sanchez
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Mobilization of Plasmids From Bacteria Into Diatoms by Conjugation Technique
Diatoms serve as a source for a variety of compounds with particular biotechnological interest. Therefore, redirecting the flow to a specific pathway requires the elucidation of the gene’s specific function. The most commonly used method in diatoms is biolistic transformation, which is a very expensive and time-consuming method. The use of episomes that are maintained as closed circles at a copy number equivalent to native chromosomes has become a useful genetic system for protein expression that avoids multiple insertions, position-specific effects on expression, and potential knockout of non-targeted genes. These episomes can be introduced from bacteria into diatoms via conjugation. Here, we describe a detailed protocol for gene expression that includes 1) the gateway cloning strategy and 2) the conjugation protocol for the mobilization of plasmids from bacteria to diatoms.