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Designer diatom episomes delivered by bacterial conjugation

Journal Article · · Nature Communications
DOI:https://doi.org/10.1038/ncomms7925· OSTI ID:1455147
 [1];  [2];  [3];  [3];  [4];  [4];  [4];  [3];  [5];  [3];  [3];  [3];  [5];  [4];  [4];  [4];  [6];  [2];  [3];  [4]
  1. J. Craig Venter Inst., La Jolla, CA (United States). Synthetic Biology and Bioenergy Group; Synthetic Biology and Bioenergy Group, J. Craig Venter Institute, La Jolla, California 92037
  2. J. Craig Venter Inst., La Jolla, CA (United States). Microbial and Environmental Genomics Group; Univ. of California, San Diego, CA (United States). Integrative Oceanography Division. Scripps Inst. of Oceanography
  3. J. Craig Venter Inst., La Jolla, CA (United States). Microbial and Environmental Genomics Group
  4. J. Craig Venter Inst., La Jolla, CA (United States). Synthetic Biology and Bioenergy Group
  5. Univ. of California, San Diego, CA (United States). National Center for Microscopy and Imaging Research
  6. J. Craig Venter Inst., La Jolla, CA (United States). Synthetic Biology and Bioenergy Group. Microbial and Environmental Genomics Group
Eukaryotic microalgae hold great promise for the bioproduction of fuels and higher value chemicals. However, compared with model genetic organisms such as Escherichia coli and Saccharomyces cerevisiae, characterization of the complex biology and biochemistry of algae and strain improvement has been hampered by the inefficient genetic tools. To date, many algal species are transformable only via particle bombardment, and the introduced DNA is integrated randomly into the nuclear genome. Here we describe the first nuclear episomal vector for diatoms and a plasmid delivery method via conjugation from Escherichia coli to the diatoms Phaeodactylum tricornutum and Thalassiosira pseudonana. We identify a yeast-derived sequence that enables stable episome replication in these diatoms even in the absence of antibiotic selection and show that episomes are maintained as closed circles at copy number equivalent to native chromosomes. This highly efficient genetic system facilitates high-throughput functional characterization of algal genes and accelerates molecular phytoplankton research.
Research Organization:
J. Craig Venter Inst., La Jolla, CA (United States)
Sponsoring Organization:
Gordon and Betty Moore Foundation (United States); Natural Sciences and Engineering Research Council of Canada (NSERC); Synthetic Genomics Inc. (United States); USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
Grant/Contract Number:
SC0008593
OSTI ID:
1455147
Journal Information:
Nature Communications, Journal Name: Nature Communications Vol. 6; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

References (47)

Stable nuclear transformation of the diatomPhaeodactylum tricornutum journal October 1996
Functional Identification of the Plasmodium Centromere and Generation of a Plasmodium Artificial Chromosome journal May 2010
Assembly of Large, High G+C Bacterial DNA Fragments in Yeast journal May 2012
Isolation and characterisation of a yeast chromosomal replicator journal November 1979
Isolation of a yeast centromere and construction of functional small circular chromosomes journal October 1980
Trans-kingdom promiscuity journal June 1990
Determining centromere identity: cyclical stories and forking paths journal August 2001
The Phaeodactylum genome reveals the evolutionary history of diatom genomes journal October 2008
Conjugation between bacterial and mammalian cells journal November 2001
Enzymatic assembly of DNA molecules up to several hundred kilobases journal April 2009
Conjugative DNA transfer into human cells by the VirB/VirD4 type IV secretion system of the bacterial pathogen Bartonella henselae journal August 2011
GenomeView: a next-generation genome browser journal November 2011
Coastal Synechococcus metagenome reveals major roles for horizontal gene transfer and plasmids in population diversity journal February 2009
Molecular Genetic Manipulation of the Diatom Thalassiosira Pseudonana (Bacillariophyceae) journal October 2006
A new molecular tool for transgenic diatoms: Control of mRNA and protein biosynthesis by an inducible promoter-terminator cassette journal June 2005
Inactivation of Phaeodactylum tricornutum urease gene using transcription activator-like effector nuclease-based targeted mutagenesis journal October 2014
Plasmids in diatom species. journal September 1991
Studies of Marine Planktonic Diatoms: i. Cyclotella nana Hustedt, and Detonula Confervacea (Cleve) Gran. journal April 1962
Assembly of eukaryotic algal chromosomes in yeast journal January 2013
Repetitive DNA is associated with centromeric domains in Trypanosoma brucei but not Trypanosoma cruzi journal January 2007
Highly Efficient Transformation of the Diatom Phaeodactylum tricornutum by Multi-Pulse Electroporation journal April 2013
Centromere Plasmid: A New Genetic Tool for the Study of Plasmodium falciparum journal March 2012
Centromere structures highlighted by the 100%-complete Cyanidioschyzon merolae Genome journal February 2008
Characterization of two circular plasmids from the marine diatomCylindrotheca fusiformis: plasmids hybridize to chloroplast and nuclear DNA journal May 1992
Transformation of Nonselectable Reporter Genes in Marine Diatoms journal May 1999
Diatoms in biotechnology: modern tools and applications journal December 2008
Localization of enzymes relating to C4 organic acid metabolisms in the marine diatom, Thalassiosira pseudonana journal January 2014
[83] Conjugal transfer of DNA to cyanobacteria book January 1988
Comparative analysis of diatom genomes reveals substantial differences in the organization of carbon partitioning pathways journal May 2012
Functional Identification of the Plasmodium Centromere and Generation of a Plasmodium Artificial Chromosome journal March 2010
The Puzzle of Plastid Evolution journal January 2009
Production and dissolution of biogenic silica in the ocean: Revised global estimates, comparison with regional data and relationship to biogenic sedimentation journal September 1995
Bacterial conjugative plasmids mobilize DNA transfer between bacteria and yeast journal July 1989
Genomes and gene expression across light and productivity gradients in eastern subtropical Pacific microbial communities journal October 2014
Genome engineering empowers the diatom Phaeodactylum tricornutum for biotechnology journal May 2014
Conjugation between bacterial and mammalian cells journal November 2001
Selective isolation of genomic loci from complex genomes by transformation-associated recombination cloning in the yeast Saccharomyces cerevisiae journal February 2008
Efficiency of the CO2-concentrating mechanism of diatoms journal February 2011
Genetic Transformation of the Diatoms Cyclotella Cryptica and Navicula Saprophila1 journal December 1995
Research note: High efficiency transformation of the diatom Phaeodactylum tricornutum with a promoter from the diatom Cylindrotheca fusiformis journal June 2009
Analysis of two marine metagenomes reveals the diversity of plasmids in oceanic environments: Marine plasmid diversity journal November 2011
The Genome of the Diatom Thalassiosira Pseudonana: Ecology, Evolution, and Metabolism journal October 2004
Creation of a Bacterial Cell Controlled by a Chemically Synthesized Genome journal May 2010
The yeast Saccharomyces kluyveri as a recipient eukaryote in transkingdom conjugation: behavior of transmitted plasmids in transconjugants. journal August 1994
A New and Improved Host-Independent Plasmid System for RK2-Based Conjugal Transfer journal March 2014
The place of diatoms in the biofuels industry journal March 2012
Conjugative DNA transfer into human cells by the VirB/VirD4 type IV secretion system of the bacterial pathogen Bartonella henselae text January 2011

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A novel endogenous selection marker for the diatom Phaeodactylum tricornutum based on a unique mutation in phytoene desaturase 1 journal June 2019
Characterization of marine diatom-infecting virus promoters in the model diatom Phaeodactylum tricornutum journal December 2015
Multisignal control of expression of the LHCX protein family in the marine diatomPhaeodactylum tricornutum journal May 2016
Universal loop assembly: open, efficient and cross-kingdom DNA fabrication journal January 2020
High-yield secretion of recombinant proteins from the microalga Chlamydomonas reinhardtii journal April 2017
Development of a silicon limitation inducible expression system for recombinant protein production in the centric diatoms Thalassiosira pseudonana and Cyclotella cryptica journal August 2017
Genome and methylome of the oleaginous diatom Cyclotella cryptica reveal genetic flexibility toward a high lipid phenotype journal November 2016
Current status and perspectives of genome editing technology for microalgae journal November 2017
Designer Sinorhizobium meliloti strains and multi-functional vectors enable direct inter-kingdom DNA transfer journal June 2019
Non-model model organisms text January 2021
Refinement of the Diatom Episome Maintenance Sequence and Improvement of Conjugation-Based DNA Delivery Methods journal August 2016
Genetic Manipulation of Competition for Nitrate between Heterotrophic Bacteria and Diatoms journal June 2016
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Transgene Expression in Microalgae—From Tools to Applications journal April 2016
Trans-Kingdom Conjugation within Solid Media from Escherichia coli to Saccharomyces cerevisiae journal October 2019
Algal Cell Factories: Approaches, Applications, and Potentials journal December 2016
Challenging the workhorse: Comparative analysis of eukaryotic micro‐organisms for expressing monoclonal antibodies journal February 2019
Production of chemicals from microalgae lipids - status and perspectives: Production of chemicals from microalgae - status and perspectives journal August 2017
Thraustochytrids as production organisms for docosahexaenoic acid (DHA), squalene, and carotenoids journal April 2016
Transformation techniques for metabolic engineering of diatoms and haptophytes: current state and prospects journal March 2018
Advanced genetic tools enable synthetic biology in the oleaginous microalgae Nannochloropsis sp. journal March 2018
Genome editing in diatoms: achievements and goals journal August 2018
Eukaryotic microalgae as hosts for light-driven heterologous isoprenoid production journal November 2018
Spent yeast as an efficient medium supplement for fucoxanthin and eicosapentaenoic acid (EPA) production by Phaeodactylum tricornutum journal September 2019
Targeted genome editing in algae using CRISPR/Cas9 journal November 2018
Replication of bacterial plasmids in the nucleus of the red alga Porphyridium purpureum journal August 2018
Genetic tool development in marine protists: emerging model organisms for experimental cell biology journal April 2020
Diatom centromeres suggest a mechanism for nuclear DNA acquisition journal July 2017
Reduction-dependent siderophore assimilation in a model pennate diatom journal November 2019
Recurrent Loss, Horizontal Transfer, and the Obscure Origins of Mitochondrial Introns in Diatoms (Bacillariophyta) journal May 2018
Synthetic biology approaches for the production of plant metabolites in unicellular organisms journal April 2017
Intracellular metabolic pathway distribution in diatoms and tools for genome-enabled experimental diatom research journal July 2017
Modulation of lipid biosynthesis by stress in diatoms journal July 2017
Genetic and metabolic engineering in diatoms journal July 2017
Editing of the urease gene by CRISPR-Cas in the diatom Thalassiosira pseudonana posted_content July 2016
Designer Sinorhizobium meliloti strains and multi-functional vectors for direct inter-kingdom transfer of high G+C content DNA posted_content October 2018
Genetic tool development in marine protists: Emerging model organisms for experimental cell biology journal April 2020
Transcript level coordination of carbon pathways during silicon starvation-induced lipid accumulation in the diatom Thalassiosira pseudonana journal February 2016
The Myb‐like transcription factor phosphorus starvation response (PtPSR) controls conditional P acquisition and remodelling in marine microalgae journal November 2019
Advances and challenges in genetic engineering of microalgae journal January 2019
Transfer of DNA from Bacteria to Eukaryotes journal July 2016
Non-model model organisms journal June 2017
Editing of the urease gene by CRISPR-Cas in the diatom Thalassiosira pseudonana journal November 2016
Genome-Scale Model Reveals Metabolic Basis of Biomass Partitioning in a Model Diatom journal May 2016
Molecular adaptations to phosphorus deprivation and comparison with nitrogen deprivation responses in the diatom Phaeodactylum tricornutum journal February 2018
Non-model model organisms text January 2017
Synthetic biology approaches for the production of plant metabolites in unicellular organisms. text January 2017
Genetic tool development in marine protists: emerging model organisms for experimental cell biology. text January 2020
Genetic tool development in marine protists: emerging model organisms for experimental cell biology text January 2020
Genetic tool development in marine protists: emerging model organisms for experimental cell biology text January 2020
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Terpenoid Metabolic Engineering in Photosynthetic Microorganisms journal October 2018
Proximity proteomics in a marine diatom reveals a putative cell surface-to-chloroplast iron trafficking pathway journal February 2021
Assessment of genomic changes in a CRISPR/Cas9 Phaeodactylum tricornutum mutant through whole genome resequencing journal January 2018
Blasticidin-S deaminase, a new selection marker for genetic transformation of the diatom Phaeodactylum tricornutum journal January 2018

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