Table 3.

Survival and growth of 35S:GLB1 and WT plants after two different hypoxic stress treatments

Survival/growth	Hypoxia, no pretreatment		Hypoxia after pretreatment with 5% O2
	35S:GLB1	WT	35S:GLB1	WT
Shoot survival, %	31.3	0.0	100	100
Primary root tip survival, %	69.0	55.7	100	100
Chlorophyll conc., μg/g	61.7	25.9	71.1	78.4
Chlorophyll content, μg per plant	0.7	0.2	1.5	1.5
Root growth, mm	56.9	33.3	56.6	53.6
Root weight, mg per 10 plants	131	119	129	254
Shoot weight, mg per 10 plants	375	329	407	565

Hypoxia treatments were 48 h of 0.1% oxygen in nitrogen. Pretreatments were also 48 h in duration.

^*Statistically significant difference (P < 0.05) between 35S:GLB1 and WT plants.

^† This treatment involved a small number of plants that exhibited highly variable root systems.