title: Role of Ulva lactuca extract in alleviation of salinity stress on wheat seedlings.
abstract: Seaweeds are potentially excellent sources of highly bioactive materials that could represent useful leads in the alleviation of salinity stress. The effects of presoaking wheat grains in water extract of Ulva lactuca on growth, some enzymatic activities, and protein pattern of salinized plants were investigated in this study. Algal presoaking of grains demonstrated a highly significant enhancement in the percentage of seed germination and growth parameters. The activity of superoxide dismutase (SOD) and catalase (CAT) increased with increasing the algal extract concentration while activity of ascorbate peroxidase (APX) and glutathione reductase (GR) was decreased with increasing concentration of algal extract more than 1% (w/v). The protein pattern of wheat seedling showed 12 newly formed bands as result of algal extract treatments compared with control. The bioactive components in U. lactuca extract such as ascorbic acid, betaine, glutathione, and proline could potentially participate in the alleviation of salinity stress. Therefore, algal presoaking is proved to be an effective technique to improve the growth of wheat seedlings under salt stress conditions.
authors.affiliation: Botany Department, Faculty of Science, Fayoum University, Fayoum, Egypt.
authors.forename: Wael M
authors.initials: WM
authors.lastname: Ibrahim
authors.affiliation: Botany Department, Faculty of Science, Fayoum University, Fayoum, Egypt.
authors.forename: Refaat M
authors.initials: RM
authors.lastname: Ali
authors.affiliation: Botany Department, Faculty of Science, Fayoum University, Fayoum, Egypt.
authors.forename: Khaulood A
authors.initials: KA
authors.lastname: Hemida
authors.affiliation: Plant Protection Department, Faculty of Agriculture, Fayoum University, Fayoum, Egypt.
authors.forename: Makram A
authors.initials: MA
authors.lastname: Sayed
mesh_terms: D010936:Plant Extracts / Q000302:isolation & purification / Q000494:pharmacology*; D054712:Salinity; D036226:Seedlings / Q000187:drug effects* / Q000502:physiology; D013312:Stress, Physiological / Q000187:drug effects* / Q000502:physiology; D014908:Triticum / Q000187:drug effects* / Q000502:physiology; D044445:Ulva
chemical_list: D010936:Plant Extracts