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Adoption of microalgae-based plant biostimulant as an alternative to the harmful products commonly employed in the agricultural sector, would be a likely; solution for boosting wheat sector sustainability. The current research examines the effects of two marine microalgae species on wheat growth, nutrient uptake, grain yield, and nutritional quality (Triticum durum). Each microalgae extract was tested at four different concentrations: 0.1%, 0.5%, 1%, and 2%. As compared to the control, microalgal extract increased wheat height, shoot dry weight, and root length (14.89 ± 1.38 % and 19.64 ± 3.29 %, respectively for % I. galbana and % N. gaditana) and root dry weight in field experiments (untreated wheat plants). In laboratory analysis, the pigment concentration of chlorophyll b (78.5 ± 2.24 % and 48.75 ± 9.66 % for 0.1% I. galbana and 0.1% N. gaditana, respectively) and carotenoids increased significantly. Nutrient uptake has enhanced as compared to the control, particularly shoot nitrogen content (81.42 ± 26.85 % and 176.44 ±10.42 %, respectively, for % I. galbana and % N. gaditana) and potassium. Lipidomic analysis revealed an improvement of FAMEs, alkanes, and alkenes. In terms of grain yield, the findings revealed a significant improvement in grain number (40.10 % for 2% I. galbana), weight, and number of ears. According temphasized texto biochemical studies, total sugar, fat, and polyphenol content in wheat grains enhanced (30.56 ± 6.84 % for 2% I. galbana) compared to the control. The analysis of wheat grain and flour quality demonstrated an elevation in manganese and calcium content, as well as flour yield and color. Seed lipidome profiling showed an increase in FAMEs, sterols, and alkanes. A biostimulant based on microalgae, which was tested in this study, can be recommended for efficient agricultural output.
