Chloramphenicol acetyltransferase as selectable marker for plastid transformation

Chloramphenicol acetyltransferase as selectable marker for plastid transformation Chloroplast transformation remains a demanding technique and is still restricted to relatively few plant species. The limited availability of selectable marker genes and the lack of selection markers that would be universally applicable to all plant species represent some of the most serious technical problems involved in extending the species range of plastid transformation. Here we report the development of the chloramphenicol acetyltransferase gene cat as a new selectable marker for plastid transformation. We show that, by selecting for chloramphenicol resistance, tobacco chloroplast transformants are readily obtained. Transplastomic lines quickly reach the homoplasmic state (typically in one additional regeneration round), accumulate the chloramphenicol acetyltransferase enzyme to high levels and transmit their plastid transgenes maternally into the next generation. No spontaneous antibiotic resistance mutants appear upon chloramphenicol selection. Several lines of evidence support the assumption that plant mitochondria are also sensitive to chloramphenicol suggesting that the chloramphenicol acetyltransferase may be a good candidate selectable marker for plant mitochondrial transformation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

Chloramphenicol acetyltransferase as selectable marker for plastid transformation

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Publisher
Springer Netherlands
Copyright
Copyright © 2010 by Springer Science+Business Media B.V.
Subject
Life Sciences; Biochemistry, general; Plant Sciences ; Plant Pathology
ISSN
0167-4412
eISSN
1573-5028
D.O.I.
10.1007/s11103-010-9678-4
Publisher site
See Article on Publisher Site

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