NDLI: Plant tissue-specific promoters can drive gene expression in Escherichia coli

Content Provider	Springer Nature Link
Author	Jopcik, Martin Bauer, Miroslav Moravcikova, Jana Boszoradova, Eva Matusikova, Ildiko Libantova, Jana
Copyright Year	2012
Abstract	Plant transgenesis often requires the use of tissue-specific promoters to drive the transgene expression exclusively in targeted tissues. Although the eukaryotic promoters are expected to stay silent in Escherichia coli, when the promoter-transgene units within the plant transformation vectors are constructed and propagated, some eukaryotic promoters have been reported to be active in prokaryotes. The potential activity of plant promoter in E. coli cells should be considered in cases of expression of proteins that are toxic for host cells, environmental risk assessment or the stability in E. coli of plant vectors for specific Cre/loxP applications. In this study, DNA fragments harbouring four embryo- and/or pollen-specific Arabidopsis thaliana promoters were investigated for their ability to drive heterologous gene expression in E. coli cells. For this, they were fused to gfp:gus reporter genes in the pCAMBIA1304 vector. Although BPROM, bacterial sigma70 promoter recognition program identified several sequences with characteristics similar to bacterial promoters including -10 and -35 sequences in each of tested fragments, the experimental approach showed that only one promoter fragment was able to drive relatively strong- and one promoter fragment relatively weak-GUS expression in E. coli cells. Remaining two tested promoters did not drive any transgene expression in bacteria. Our results also showed that cloning of a shorter plant promoter sequence into vectors containing lacZ α-complementation system can increase the probability of gene expression driven by upstream located lac promoter. This should be considered when cloning of plant expression units, the expression of which is unwanted in E. coli.
Starting Page	387
Ending Page	396
Page Count	10
File Format	PDF
ISSN	01676857
Journal	Plant Cell, Tissue and Organ Culture (PCTOC)
Volume Number	113
Issue Number	3
e-ISSN	15735044
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-12-16
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Escherichia coli Heterologous gene expression Horizontal gene transfer Plant-specific promoter Read-through transcription Plant Sciences Plant Physiology Plant Genetics & Genomics Plant Pathology
Content Type	Text
Resource Type	Article
Subject	Horticulture

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