Plasmid rearrangements in the photosynthetic bacterium Rhodopseudomonas sphaeroides.

Abstract

Mu d1(Ap lac) was introduced into the photosynthetic bacterium Rhodopseudomonas sphaeroides 2.4.1. via the R-plasmid R751 in an attempt to isolate fusion derivatives involving photosynthetic operons. The selection system is potentially very powerful since R. sphaeroides is normally Lac negative. Among the exconjugants, photosynthesis-deficient mutants were… (More)

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