期刊
MOLECULAR AND GENERAL GENETICS
卷 263, 期 3, 页码 404-410出版社
SPRINGER
DOI: 10.1007/s004380051184
关键词
Chlamydomonas; chloroplast transformation; aphA-6; selectable marker
Reverse-genetic studies of chloroplast genes in the green alga Chlamydomonas reinhardtii have been hampered by the paucity of suitable selectable markers for chloroplast transformation. We have constructed a series of vectors for the targeted insertion and expression of foreign genes in the Chlamydomonas chloroplast genome. Using these vectors we have developed a novel selectable marker based on the bacterial gene aphA-6, which encodes an aminoglycoside phosphotransferase. The aphA-6,4-6 marker allows direct selection for transformants on medium containing either kanamycin or amikacin. The marker can be used to inactivate or modify specific chloroplast genes, and can be used as a reporter of gene expression. The availability of this marker now makes possible the serial transformation of the chloroplast genome of Chlamydomonas.
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