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.

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Record number 507015
Title Transient production of artemisinin in Nicotiana benthamiana is boosted by a specific lipid transfer protein from A. annua
Author(s) Wang, Bo; Kashkooli, Arman Beyraghdar; Sallets, Adrienne; Ting, Jimmy; Ruijter, Norbert C.A. de; Olofsson, Linda; Brodelius, Peter; Olofsson, Linda; Boutry, Marc; Bouwmeester, Harro; Krol, Sander van der
Source Metabolic Engineering 38 (2016). - ISSN 1096-7176 - p. 159 - 169.
Department(s) Laboratory of Plant Physiology
Laboratory of Cell Biology
Publication type Refereed Article in a scientific journal
Publication year 2016
Keyword(s) ABC transporters - Artemisia annua - Artemisinin - Lipid transfer proteins - Nicotiana benthamiana - Pleiotropic Drug Resistance protein

Our lack of full understanding of transport and sequestration of the heterologous products currently limit metabolic engineering in plants for the production of high value terpenes. For instance, although all genes of the artemisinin/arteannuin B (AN/AB) biosynthesis pathway (AN-PW) from Artemisia annua have been identified, ectopic expression of these genes in Nicotiana benthamiana yielded mostly glycosylated pathway intermediates and only very little free (dihydro)artemisinic acid [(DH)AA]. Here we demonstrate that Lipid Transfer Protein 3 (AaLTP3) and the transporter Pleiotropic Drug Resistance 2 (AaPDR2) from A. annua enhance accumulation of (DH)AA in the apoplast of N. benthamiana leaves. Analysis of apoplast and cell content and apoplast exclusion assays show that AaLTP3 and AaPDR2 prevent reflux of (DH)AA from the apoplast back into the cells and enhances overall flux through the pathway. Moreover, AaLTP3 is stabilized in the presence of AN-PW activity and co-expression of AN-PW+AaLTP3+AaPDR2 genes yielded AN and AB in necrotic N. benthamiana leaves at 13 days post-agroinfiltration. This newly discovered function of LTPs opens up new possibilities for the engineering of biosynthesis pathways of high value terpenes in heterologous expression systems.

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