Iron deficiency induced changes on electron transport rate in Pisum sativum chloroplasts

Iron deficiency induced decrease in the rate of whole electron transport ch ain in chloroplasts of pea (Pisum sativum L.). Such reduction was mainly du e to the loss of photosystem (PS) 2 activity. The same result was obtained when the ratio of variable to maximum chlorophyll fluorescence (F-v/F-m) wa s evaluated. The loss in PS 2 activity was primarily due to a loss of 33, 2 3 and 17 kDa polypeptides. In contrast, iron deficiency induced the synthes is of 28 and 29 kDa polypeptides.