Table I.

Survival rates of transgenic plants under different stress conditions

CBF4-Overexpressing Lines	Survivala	Totalb	Survivalc
			%
Freezing tolerance (nonacclimated)d
Control	1	169	1
L10	44	85	52
L48	29	35	83
L2	44	44	100
Freezing tolerance (cold acclimated)e
Control	4	220	2
L10	50	91	55
L48	15	28	54
L2	73	82	89
Drought tolerancef
Control	3	181	2
L10	44	98	45
L48	123	141	87

^a No. of survival plants. 

^b Total no. of plants used in each assay. 

^c Percentage of survival plants. 

^d Two-week-old plants grown on petri dishes at 22°C and then frozen at −10°C for 20 h.   

^e Two-week-old plants grown on petri dishes at 22°C, transferred to 4°C for 4 d, and then frozen at −15°C for 20 h. 

^fTwo-week-old soil-grown plants withheld water for 9 d, rewatered, and scored 4 d later. Plants were considered dead if all the leaves were brown and there was no regrowth 4 d after rewatering. Water loss during the drought period was similar for all pots independent of the plant size (data not shown).