Paper Details

PJB-2021-693

EFFECT OF SARGASSUM SPP EXTRACTS ON THE RESISTAN CAPACITY OF TOMATO AGAINST BIOTIC STRESS

Luz Leticia Rivera Solís
Abstract

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In recent years, the indiscriminate use of synthetic products to control the incidence of pests and pathogens has had a negative impact on the agricultural sector. In the current study, the objective of this research was to study the biostimulant effect of hydroalcoholic extract of Sargassum spp. (SAR) on resistance to Fusarium oxysporum (FO) in tomato crop. The tomato pots was established considering 4 treatments: plants with the application with the extract of SAR and infected with FO (TX), an infected control (TI), a commercial product based on Ascophyllum nodosum (TCI) and a absolute witness (T0) without applications and infection. Agronomic, biochemical, enzymatic and gene expression variables were evaluated. The application of TX presented a similar behavior to T0 in the variables related to plant vigor such as yield, number of fruits, plant height and stem diameter. Likewise, in the fruits harvested from TX, reproduction acceptable nutraceutical quality depending on the content of vitamin C, phenols, lycopene and antioxidant capacity. In enzyme kinetics, the application of TX increased PAL, chitinase and β 1-3 glucanase activity at different sampling times. Therefore, the application of the TX extract represents an alternative for its use as a biostimulant that improves resistance to biotic stress, increases the vigor and quality of tomato fruits.

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