Resumen

CERON-RODRIGUEZ, Gabriel et al. Lignin extracted from pecan shells and its use as a biostimulant in plants. Rev. Mex. Cienc. Agríc [online]. 2025, vol.16, n.spe30, e4055.  Epub 23-Ene-2026. ISSN 2007-0934.  https://doi.org/10.29312/remexca.v16i30.4055.

The constant increase in the world’s population represents a significant challenge for the agricultural sector since there is a need to find efficient and non-polluting solutions that allow increasing the production of plant foods in quantity and quality, with fewer inputs, as well as dealing with the large amount of waste produced. One of the alternatives employed has been the use of biostimulants of plant metabolism, which improve plant growth and yield and increase tolerance to biotic and abiotic stress. Lignin and its derivatives (oligomers, monolignols, lignosulfonates, ammonium lignosulfonates, calcium lignosulfonates, etc.) are aromatic heteropolymers that constitute 40% of the plant cell wall and in recent years have been shown to function as biostimulants and fertilizer carriers, evidencing an increase in biomass, root, and production, due to a potentiation in the photosynthetic rate and metabolic pathways related to carbohydrates. One source for obtaining them can be agricultural waste, such as pecan shells, which are agro-residues produced on a large scale in northern Mexico and until today, have been poorly used; the objective of the manuscript focused on collecting and analyzing the state of the art of the use of lignin from the agro-residues of pecan cultivation and its potential use as a biostimulant of metabolism in plants.

Palabras llave : agro-residues; crops; enzymes; lignin; metabolites; synthesis.

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