STABLE TRANSFORMATION OF PLASTIDS IN HIGHER-PLANTS

被引：449
|
作者：
SVAB, Z [1 ]
HAJDUKIEWICZ, P [1 ]
MALIGA, P [1 ]
机构：
[1] RUTGERS STATE UNIV, WAKSMAN INST, PISCATAWAY, NJ 08855 USA
来源：
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 1990年 / 87卷 / 21期
关键词：
antibiotic resistance; maternal inheritance; projectile transformation; rRNA genes;
D O I：
10.1073/pnas.87.21.8526
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Stable genetic transformation of the plastid genome is reported in a higher plant, Nicotiana tabacum. Plastid transformation was obtained after bombardment of leaves with tungsten particles coated with pZS148 plasmid DNA. Plasmid pZS148 (9.6 kilobases) contains a 3.7-kilobase plastid DNA fragment encoding the 16S rRNA. In the 16S rRNA-encoding DNA (rDNA) a spectinomycin resistance mutation is flanked on the 5' side by a streptomycin resistance mutation and on the 3' side by a Pst I site generated by ligating an oligonucleotide in the intergenic region. Transgenic lines were selected by spectinomycin resistance and distinguished from spontaneous mutants by the flanking, cotransformed streptomycin resistance and Pst I markers. Regenerated plants are homoplasmic for the spectinomycin resistance and the Pst I markers and heteroplasmic for the unselected streptomycin resistance trait. Transgenic plastid traits are transmitted to the seed progeny. The transgenic plastid genomes are products of a multistep process, involving DNA recombination, copy correction, and sorting out of plastid DNA copies.
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页码：8526 / 8530
页数：5
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