Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 548902
Title Stable transformation of the green algae Acutodesmus obliquus and Neochloris oleoabundans based on E. coli conjugation
Author(s) Muñoz, Camilo F.; Sturme, Mark H.J.; Adamo, Sarah D'; Weusthuis, Ruud A.; Wijffels, René H.
Source Algal Research 39 (2019). - ISSN 2211-9264
DOI https://doi.org/10.1016/j.algal.2019.101453
Department(s) Bioprocess Engineering
VLAG
Publication type Refereed Article in a scientific journal
Publication year 2019
Keyword(s) Acutodesmus obliquus - Bacterial conjugation - Genetic transformation - Green microalgae - Neochloris oleoabundans
Abstract

Microalgae are an ideal platform for the production of high-value chemicals, nutritional products and biofuels. Genetic engineering could speed up the development of microalgae derived products and reduce the overall production costs. Genetic methods such as particle bombardment, electroporation, Agrobacterium tumefaciens mediated transformation (ATMT), and agitation with glass beads and silicon carbide whiskers have been developed for the genetic transformation of microalgae. However, the transformation efficiency is species dependent, so a variety of transformation methods are required to engineer a wide range of microalgae species. The oleaginous microalgae Acutodesmus obliquus and Neochloris oleoabundans have a great potential as production platforms due to their ability to produce large amounts of triacylglycerol (TAG). Genetic modification techniques however are required to increase TAG levels further or to modify the fatty acid composition. Recently, a conjugation-based method for the delivery of episomes from bacteria to diatom microalgae has been reported. In this study, we have achieved the successful transformation of green oleaginous microalgal strains by transferring an expression vector via conjugation from E. coli. Since delivery of exogenous DNA into the microalgae cells is only the first step in obtaining transgenic microalgae, we further analyzed transformation efficiencies by PCR and expression of the Clover fluorescent protein in the targeted species.

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