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J. Bacteriol., Jan 1996, 85-93, Vol 178, No. 1
KD Schmidt, B Tummler and U Romling
A physical and genetic map was constructed for Pseudomonas aeruginosa C.
Mainly, two-dimensional methods were used to place 47 SpeI, 8 PacI, 5 SwaI,
and 4 I-CeuI sites onto the 6.5-Mb circular chromosome. A total of 21
genes, including the rrn operons and the origin of replication, were
located on the physical map. Comparison of the physical and genetic map of
strain C with that of the almost 600-kb-smaller genome of P. aeruginosa
reference strain PAO revealed conservation of gene order between the two
strains. A large-scale mosaic structure which was due to insertions of
blocks of new genetic elements which had sizes of 23 to 155 kb and
contained new SpeI sites was detected in the strain C chromosome. Most of
these insertions were concentrated in three locations: two are congruent
with the ends of the region rich in biosynthetic genes, and the third is
located in the proposed region of the replication terminus. In addition,
three insertions were scattered in the region rich in biosynthetic genes.
The arrangement of the rrn operons around the origin of replication was
conserved in C, PAO, and nine other examined independent strains.
Copyright © 1996, American Society for Microbiology
Comparative genome mapping of Pseudomonas aeruginosa PAO with P. aeruginosa C, which belongs to a major clone in cystic fibrosis patients and aquatic habitats
Klinische Forschergruppe, Institut fur Biophysikalische Chemie und Padiatrische Pneumologie, Medizinische Hochschule Hannover, Germany.
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