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Article History

Received: 26 December 2023

Accepted: 18 May 2024

First Online: 4 June 2024

Declarations

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: This investigation studied the effect of SVE on some germination parameters of tomato seeds to choose the most potent extract and to advance the comprehension of the underlying mechanisms by which the selected SVE mitigates the harmful effects of salinity on tomato seedlings. To our knowledge, this is the first study that examined the effects of these extracts, prepared from the brown algae <i>Sargassum vulgare</i> harvested from the marine area of Al-Hoceima Morocco, as Biostimulants that contribute to protect tomato plants against abiotic stress, like salt stress. Furthermore, our research offers a comprehensive evaluation of the morphophysiological and biochemical parameters of tomato seedlings under salinity stress and SVE supplementation. We not only assessed the growth parameters but also investigated the impact of SVE on the antioxidative defense system and metabolic activities of the tomato plants. Our findings provide a detailed understanding insight into how SVE improves salt stress tolerance in tomato plants by enhancing antioxidant enzyme activities and promoting the activities of enzymes involved in carbon and nitrogen metabolism. Moreover, the obtained results allow us to compare them with our previous studies conducted on other algae species harvested from the same region, providing valuable insights into the relative efficacy of different seaweed extracts as biostimulants.

: Not applicable. This study did not involve any human or animal subjects; therefore, no ethical approval is required.

: The authors declare no competing interests.