Figure 4

Changes in AsA _t content of potato leaves as a function of light. Glasshouse grown plants were transferred to off-phased controlled environment chambers (panels A and B) 14 days prior to the start of the experiment. Environment chambers were on a 10 h dark – 14 h light cycle as indicated by the brown and yellow panels respectively. At the times shown, source leaves (leaves on the lower four nodes of each stem) were removed from each of three plants, ground in liquid nitrogen and extracted in 5% MPA, 5 mM TCEP (9:1 v/w) prior to quantification by HPLC. Values are represented as mean ± SE, n = 3.