DNA-free two-gene knockout in Chlamydomonas reinhardtii via CRISPR-Cas9 ribonucleoproteins.

Abstract:

:Microalgae are versatile organisms capable of converting CO2, H2O, and sunlight into fuel and chemicals for domestic and industrial consumption. Thus, genetic modifications of microalgae for enhancing photosynthetic productivity, and biomass and bio-products generation are crucial for both academic and industrial applications. However, targeted mutagenesis in microalgae with CRISPR-Cas9 is limited. Here we report, a one-step transformation of Chlamydomonas reinhardtii by the DNA-free CRISPR-Cas9 method rather than plasmids that encode Cas9 and guide RNAs. Outcome was the sequential CpFTSY and ZEP two-gene knockout and the generation of a strain constitutively producing zeaxanthin and showing improved photosynthetic productivity.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Baek K,Kim DH,Jeong J,Sim SJ,Melis A,Kim JS,Jin E,Bae S

doi

10.1038/srep30620

subject

Has Abstract

pub_date

2016-07-28 00:00:00

pages

30620

issn

2045-2322

pii

srep30620

journal_volume

6

pub_type

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