Proline Induced Modulation in Physiological Responses in Wheat Plants

Abstract

Proline is multifunctional amino acid and has roles in inducing salt stress tolerance. Contrasting reports are available on its mechanism of stress tolerance in crop plants such as osmoprotectant, osmotic adjustment, ROS scavenging, ion uptake, and photosynthesis. A pot experiment was conducted to assess proline-induced changes in physiological processes in four wheat cultivars differing in salinity tolerance. Shoot and root fresh and dry weights, length and width of leaves, quantum yield and chlorophyll contents increased by the foliar application of proline. Proline also affected the absorption, trapping and electron transport per reaction center maximaly in S-24 as compared to other three cultivars. Proline modulate the physiological and biochemical processes in wheat cultivars.