Exploiting Laminaria digitata L. Aqueous Extract for Tomato Biostimulation: A Physiological and Metabolomic Approach.

ABSTRACT: Water deficit negatively affects crop yield and quality. Biostimulants, such as brown seaweed extracts, offer a sustainable solution to mitigate these effects. This study evaluated the impact of Laminaria digitata-aqueous extract (LE) on tomato performance and its potential to alleviate drought stress by examining morphological, physiological, and metabolic responses. Two-week-old tomato plants were foliar-sprayed with LE (0.0, 0.1, and 1.0 g L^-1) and split into well-watered (WW) and water-limited (WL) groups. WW plants received regular irrigation, while WL faced a one-week drought. Then, half of the WL plants were rewatered and allowed to recover for 24 h (REC group). In general, LE effects were influenced by irrigation conditions, mainly impacting physiological and metabolomic

SUBMITTER: Circuncisao AR 

PROVIDER: S-EPMC12848962 | biostudies-literature | 2026 Jan-Feb

REPOSITORIES: biostudies-literature