Title |
Editing of the urease gene by CRISPR-Cas in the diatom Thalassiosira pseudonana
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Published in |
Plant Methods, November 2016
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DOI | 10.1186/s13007-016-0148-0 |
Pubmed ID | |
Authors |
Amanda Hopes, Vladimir Nekrasov, Sophien Kamoun, Thomas Mock |
Abstract |
CRISPR-Cas is a recent and powerful addition to the molecular toolbox which allows programmable genome editing. It has been used to modify genes in a wide variety of organisms, but only two alga to date. Here we present a methodology to edit the genome of Thalassiosira pseudonana, a model centric diatom with both ecological significance and high biotechnological potential, using CRISPR-Cas. A single construct was assembled using Golden Gate cloning. Two sgRNAs were used to introduce a precise 37 nt deletion early in the coding region of the urease gene. A high percentage of bi-allelic mutations (≤61.5%) were observed in clones with the CRISPR-Cas construct. Growth of bi-allelic mutants in urea led to a significant reduction in growth rate and cell size compared to growth in nitrate. CRISPR-Cas can precisely and efficiently edit the genome of T. pseudonana. The use of Golden Gate cloning to assemble CRISPR-Cas constructs gives additional flexibility to the CRISPR-Cas method and facilitates modifications to target alternative genes or species. |
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Geographical breakdown
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United Kingdom | 5 | 42% |
United States | 3 | 25% |
Canada | 1 | 8% |
Belgium | 1 | 8% |
Unknown | 2 | 17% |
Demographic breakdown
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Scientists | 6 | 50% |
Members of the public | 6 | 50% |
Mendeley readers
Geographical breakdown
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United Kingdom | 1 | <1% |
Mexico | 1 | <1% |
Argentina | 1 | <1% |
Unknown | 214 | 99% |
Demographic breakdown
Readers by professional status | Count | As % |
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Researcher | 42 | 19% |
Student > Ph. D. Student | 37 | 17% |
Student > Master | 31 | 14% |
Student > Bachelor | 22 | 10% |
Student > Postgraduate | 8 | 4% |
Other | 26 | 12% |
Unknown | 51 | 24% |
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Medicine and Dentistry | 6 | 3% |
Chemistry | 5 | 2% |
Environmental Science | 4 | 2% |
Other | 15 | 7% |
Unknown | 54 | 25% |