TABLE 1.

Cell-to-cell movement of mutant PVX.GUS viruses on transgenic tobacco

Transgene constructa		No. of lines testedb	No. of transgenic linesc complementing mutant:
			Δ25K	Δ12K	8K+6
TGB100		22	16	—d	—
TGB200		9	—	3	—
TGB300		11	—	—	7
TGB400		21	21	0e	0
TGB500		5	5	0	—
TGB600		6	—	4	3

^aDark boxes indicate promoter and terminator regions. 25K, 12K, and 8K are the names of the TGB ORFs of PVX. 

^bTen to 20 plants per line were tested by inoculation with each virus. 

^cNumber of lines complementing cell-to-cell movement of mutant viruses was measured by GUS assay at 5 dpi. Wild-type PVX.GUS moved from cell to cell in all lines tested. 

^d—, lines not tested with specific viruses. 

^eLines yielding no positive results.