FIG. 1.

The different panels show GFP fluorescent transconjugant cells, formed after transfer of plasmid pBF1::gfp from P. putida KT2442 to indigenous marine bacteria in seawater. GFP transconjugants of different cell shapes are seen in the panels as follows (top, left to right): club-shaped transconjugant; aggregate of short rod-shaped transconjugants; and single dividing transconjugant; (second row, left to right) transconjugants in a tetrad form; club-shaped transconjugants; and weakly fluorescent club-shaped and rod-shaped transconjugants; (third row, left to right) budding type of transconjugant; aggregate of different transconjugant cell shapes; and large budding transconjugant cell; (bottom row, left to right) aggregate of rod-shaped transconjugants; aggregate of rod-shaped transconjugants; and long filamentous transconjugants. In all panels (except top right), transconjugants are found together with yellow or red autofluorescent cells.