Rewaa S. Jalal, Ansary E. Moft
Abstract
Experiments were conducted to study the effect of 0.5 mM salicylic acid (SA) on growth, osmoregulating solutes (proline and soluble sugars), and protein patterns of Shara (Plectranthus tenuiflorus ) plants grown under different levels of irrigation water (100, 80, 60 and 40% of the field capacity, FC). Water stress, particularly at 40% FC, decreased fresh and dry weights in the absence of SA. Values of, sugars and proteins, were decreased by severe water stress while SA treatments improved these values. Proline content increased under water stress. The electrophoresis studies showed that some new protein bands were observed propaply to increase plant tolerance against water stress effect.