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  • Title: Transformation of the Plastid Genome in Tobacco: The Model System for Chloroplast Genome Engineering.
    Author: Maliga P, Tungsuchat-Huang T, Lutz KA.
    Journal: Methods Mol Biol; 2021; 2317():135-153. PubMed ID: 34028766.
    Abstract:
    The protocol we report here is based on biolistic delivery of transforming DNA to tobacco leaves, selection of transplastomic clones by spectinomycin or kanamycin resistance and regeneration of plants with uniformly transformed plastid genomes. Because the plastid genome of Nicotiana tabacum derives from Nicotiana sylvestris, and the two genomes are highly conserved, vectors developed for N. tabacum can be used in N. sylvestris. The tissue culture responses of N. tabacum cv. Petit Havana and N. sylvestris accession TW137 are similar. Plastid transformation in a subset of N. tabacum cultivars and in Nicotiana benthamiana requires adjustment of the tissue culture protocol. We describe updated vectors targeting insertions in the unique and repeated regions of the plastid genome, vectors suitable for regulated gene expression by the engineered PPR10 RNA binding protein as well as systems for marker gene excision.
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