Table 1. Quantitative analysis of ku80-mutant, complemented ku80-mutant, wild-type, and KU80-overexpressing plants.

Plant	Roots producing galls,* %	Tumor morphology†	GUS expression,‡ % of control
High-concentration inoculum§
Wild type	92 ± 3	Large and green	100
ku80 mutant	7 ± 1	Very small, yellow	95 ± 2
Rescued ku80 mutant	89 ± 4	Large and green	96 ± 3
Low-concentration inoculum
KU80 overexpression	88 ± 3	Very large and green	52 ± 4
Wild type	42 ± 5	Large and green	50 ± 3

^*Numbers represent the percentages of root segments producing galls 5–6 weeks postinoculation (n = 10 plates)

^†Characterization of tumor morphology, as described (22)

^‡GUS expression levels were calculated as percentages of the control (wild-type plants infected with a high concentration of Agrobacterium inoculum) (n = 10 plates)

^§High-concentration Agrobacterium inoculum was used for comparison between the wild type, ku80 mutant, and rescued ku80 mutant, whereas low-concentration Agrobacterium inoculum was used for comparison between wild-type and KU80-overexpressing plants