Cloning a Chloroplast Genome in Saccharomyces cerevisiae and Escherichia coli

Chloroplast genomes present an alternative strategy for large-scale engineering of photosynthetic eukaryotes. Prior to our work, the chloroplast genomes of Chlamydomonas reinhardtii (204 kb) and Zea mays (140 kb) had been cloned using bacterial and yeast artificial chromosome (BAC/YAC) libraries, re...

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Main Authors: Emma Walker, Bogumil Karas
Format: Article
Language:English
Published: Bio-protocol LLC 2025-01-01
Series:Bio-Protocol
Online Access:https://bio-protocol.org/en/bpdetail?id=5162&type=0
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author Emma Walker
Bogumil Karas
author_facet Emma Walker
Bogumil Karas
author_sort Emma Walker
collection DOAJ
description Chloroplast genomes present an alternative strategy for large-scale engineering of photosynthetic eukaryotes. Prior to our work, the chloroplast genomes of Chlamydomonas reinhardtii (204 kb) and Zea mays (140 kb) had been cloned using bacterial and yeast artificial chromosome (BAC/YAC) libraries, respectively. These methods lack design flexibility as they are reliant upon the random capture of genomic fragments during BAC/YAC library creation; additionally, both demonstrated a low efficiency (≤ 10%) for correct assembly of the genome in yeast. With this in mind, we sought to create a highly flexible and efficient approach for assembling the 117 kb chloroplast genome of Phaeodactylum tricornutum, a photosynthetic marine diatom. Our original article demonstrated a PCR-based approach for cloning the P. tricornutum chloroplast genome that had 90%–100% efficiency when screening as few as 10 yeast colonies following assembly. In this article, we will discuss this approach in greater depth as we believe this technique could be extrapolated to other species, particularly those with a similar chloroplast genome size and architecture.
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spelling doaj-art-90d0a057a8224ed98faf5d02cd0e0b232025-02-07T08:16:38ZengBio-protocol LLCBio-Protocol2331-83252025-01-0115210.21769/BioProtoc.5162Cloning a Chloroplast Genome in Saccharomyces cerevisiae and Escherichia coliEmma Walker0Bogumil Karas1Biochemistry Department, Western University, London, CanadaBiochemistry Department, Western University, London, CanadaChloroplast genomes present an alternative strategy for large-scale engineering of photosynthetic eukaryotes. Prior to our work, the chloroplast genomes of Chlamydomonas reinhardtii (204 kb) and Zea mays (140 kb) had been cloned using bacterial and yeast artificial chromosome (BAC/YAC) libraries, respectively. These methods lack design flexibility as they are reliant upon the random capture of genomic fragments during BAC/YAC library creation; additionally, both demonstrated a low efficiency (≤ 10%) for correct assembly of the genome in yeast. With this in mind, we sought to create a highly flexible and efficient approach for assembling the 117 kb chloroplast genome of Phaeodactylum tricornutum, a photosynthetic marine diatom. Our original article demonstrated a PCR-based approach for cloning the P. tricornutum chloroplast genome that had 90%–100% efficiency when screening as few as 10 yeast colonies following assembly. In this article, we will discuss this approach in greater depth as we believe this technique could be extrapolated to other species, particularly those with a similar chloroplast genome size and architecture.https://bio-protocol.org/en/bpdetail?id=5162&type=0
spellingShingle Emma Walker
Bogumil Karas
Cloning a Chloroplast Genome in Saccharomyces cerevisiae and Escherichia coli
Bio-Protocol
title Cloning a Chloroplast Genome in Saccharomyces cerevisiae and Escherichia coli
title_full Cloning a Chloroplast Genome in Saccharomyces cerevisiae and Escherichia coli
title_fullStr Cloning a Chloroplast Genome in Saccharomyces cerevisiae and Escherichia coli
title_full_unstemmed Cloning a Chloroplast Genome in Saccharomyces cerevisiae and Escherichia coli
title_short Cloning a Chloroplast Genome in Saccharomyces cerevisiae and Escherichia coli
title_sort cloning a chloroplast genome in saccharomyces cerevisiae and escherichia coli
url https://bio-protocol.org/en/bpdetail?id=5162&type=0
work_keys_str_mv AT emmawalker cloningachloroplastgenomeinsaccharomycescerevisiaeandescherichiacoli
AT bogumilkaras cloningachloroplastgenomeinsaccharomycescerevisiaeandescherichiacoli