Table 1. Biolistic transformation of A. carterae with pAmpPSBA.

Each experiment was carried out in triplicate, thus producing three potentially transformed lines. In addition, one line of cells was subjected to biolistic bombardment, but without the pAmpPSBA (‘untransformed’). Note that cultures from experiments 5–9 were harvested for genetic analysis, and thus the listed survival time is the day of harvesting, labeled with *.

Experiment	Rupture disk (p.s.i.)	Atrazine concentration (µg ml−1)	Survival untransformed (days)	Mean survival pAmpPSBA (days)
A1	1100	2.5	13	13
A2	1350	2.5	13	16
A3	1350	2.5	13	15
A4	1550	2.5	13	17
A5	1550	2.5	12	20*
A6	1550	2	7*	7*
A7	1550	2	13	13*
A8	1550	2	12	15*
A9	1550	1	3 months*	3 months*