Scientific Publications

Lettuce Soil Microbiome Modulated by an L-α-Amino Acid-Based Biostimulant

January 2023
Scientific articles | Bioestimulantes | Terramin® Pro
Marta Acin-Albiac, Beatriz García-Jiménez, Cándido Marín Garrido, Elisabet Borda Casas, Javier Velasco-Alvarez, Nuria Sierras Serra, and Alberto Acedo
1 Biome Makers Inc., San Francisco, CA 95605, USA, Plant Health R&D, Bioiberica, S.A.U, 08950 Barcelona, Spain
Agriculture 2023, Volume 13, Issue 2, 344
Inglés

Maintenance of soil health is of foremost importance to sustain and increase crop productivity, while meeting the demand of a rising global population. Soil microbiome is gaining increasing attention as a modulator of soil health. Microbial communities confer traits to the soil as a living organism, which functions holistically and conforms part of the plant holobiont, reassembling the human-gut axis. Novel strategies in biostimulant development advocate for modulation of the native soil microbiome and the reinforcement of microbial networking to outpace pathogen inclusion. Consequently, we hypothesize that Terramin® Pro may promotes beneficial microorganisms, depending on the native microbiota of soil, which would lead to an improvement of crop performance indicators.


We proposed a soil microbiome-based approach to characterize the effect of an L-a-amino acid based biostimulant (Terramin® Pro) on resulting plant phenotypes in lettuce cultivars (Lactuca sativa L.) to address our hypothesis. First, product application promoted Actinobacteria group in assorted soils with different track of agronomic practices. Secondly, biostimulant application improved chlorophyll content in particular soils deviating from standard conditions, i.e., sick, or uncultivated ones.


Specially, we observed that product application at 30 L/ha improved lettuce phenotype, while potentially promoted entomopathogenic fungi (Beauveria and Metarhizium spp.) and suppressed other lettuce disease-related fungi (Olpidium spp.) in nematode-infested soils. Further investigations could deepen into Terramin® Pro as a sustainable prebiotic strategy of soil indigenous microbiota, through in-house microbiome modulation, even in additional crops.

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