Bioremediation of an oxyfluorfen-polluted soil using biostimulants obtained by fermentation processes: Effect on biological properties

Tejada, Manuel; Macías-Benítez, Sandra; Caballero, Pablo; Gómez, Isidoro; Paneque, Patricia; Parrado, Juan

doi:10.1016/j.apsoil.2021.104270

Cited by 8 publications

(9 citation statements)

References 57 publications

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“…Different biostimulants mainly obtained from different organic wastes by enzymatic hydrolysis processes have been used for the bioremediation of soils polluted by various herbicides in recent years [9,10,12]. The results obtained in these studies suggest that the application of these biostimulants to contaminated soils significantly decreases the herbicide concentration.…”

Section: Discussionmentioning

confidence: 99%

“…Tejada et al [10] have suggested that the production process of these biostimulants is the cause of the differences in the stimulation of soil enzymatic activities. Thus, during the fermentation process, the bacterium Bacillus licheniformis excretes a large amount of enzymes that break down organic compounds into inorganic ones.…”

Section: Discussionmentioning

confidence: 99%

“…The application of biostimulants obtained by enzymatic hydrolysis processes stimulated the dehydrogenase, glucosidase and alkaline phosharase activities. Tejada et al [10] suggest that in the process of enzymatic hydrolysis, a large part of the organic substrates are not degraded by the action of proteolytic enzymes. Therefore, when these biostimulants are applied to the soil, soil microorganisms must excrete different enzymes to obtain energy and nutrients.…”

Section: Discussionmentioning

confidence: 99%

“…In this regard, the role of sewage sludge is the same as for other sources of organic matter applied to soils contaminated by pesticides. Thus, they play a role in stimulating pesticide-tolerant soil microorganisms, which leads to an acceleration in the degradation of this organic xenobiotic and mayo also allow the sorption of such pesticides; thus, reducing their concentration in the soil solution and, consequently, reducing their toxicity [9,10].…”

Section: Introductionmentioning

confidence: 99%

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Use of Biostimulants Obtained from Sewage Sludge for the Restoration of Soils Polluted by Diuron: Effect on Soil Biochemical Properties

et al. 2022

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The use of biostimulants in the bioremediation of polluted soils in order to eliminate/reduce the toxic effects of pesticides on the soil is currently a very common environmental practice. In this study, we studied the bioremediation effect of three biostimulants obtained from sewage sludge by way of an enzymatic hydrolysis and fermentation process in a diuron-contaminated soil for 55 days under laboratory conditions. During this period of time, the enzymatic activities, bacterial community and the evolution of diuron in the soil were analyzed. Compared with the unpolluted soil, the application of diuron decreased the dehydrogenase, β-glucosidase and phosphatase activities by 60%, 40.7%, and 60.6%, respectively. The Gram-positive bacterial population was decreased by 48.5%, while the Gram-negative population was decreased by 57.7% and the fungal population was decreased by 54.3%. The application of the three biostimulants to the soil decreased the diuron concentration. However, this decrease was higher when the biostimulant obtained by enzymatic hydrolysis was applied. This may be due to the fact that this biostimulant contains a higher quality of low molecular weight proteins than the other two biostimulants obtained by fermentation processes.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Use of Biostimulants Obtained from Sewage Sludge for the Restoration of Soils Polluted by Diuron: Effect on Soil Biochemical Properties

et al. 2022

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“…In addition to crop and human damage, oxyfluorfen also affects soil microorganisms, altering their activities and their biodiversity (Gómez et al, 2014;Rodríguez-Morgado et al, 2014;Tejada et al, 2022). These microorganisms are essential for good crop development given their multiple interactions with plants, especially those that promote plant growth, which are known as PGPB (Plant Growth Promoting Bacteria) (Chamkhi et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Study of the Biochemical Activity and Plant Growth Promoting Bacteria in Soils Polluted with Oxyfluorfen

et al. 2022

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Enzymatic Preparation of Mushroom By-product Protein Hydrolysates (Mb-PPHs)

Inca-Torres

Aguilera-Velázquez

Urbina-Salazar

et al. 2023

Waste Biomass Valor

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The excessive use of chemical fertilizers can cause severe environmental damage. In recent decades, the application of biostimulants to improve soil composition and stimulate plant growth has contributed significantly to environmental preservation. In this paper, we studied the production and characterization of an amino acid/peptide-enriched biostimulant using edible mushroom (Agaricus bisporus) by-products (tails and nonmarketable mushrooms) as raw materials and commercial proteases as hydrolytic agents. A single hydrolytic process using four different endoproteases, Alcalase®, L-450, Flavourzyme® or papain, and a sequential hydrolytic process using two proteases, an endoprotease and an exoprotease, Alcalase® + Flavourzyme® or L-450 + Flavourzyme), were conducted. A preevaluation of potential plant biostimulants was also carried out, testing the biostimulant capacity of single and sequential Mb-PPHs to stimulate maize seed germination and root growth, as well as the evaluation of the vigor index (VI), with very promising results. Graphical Abstract

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Bioremediation of an oxyfluorfen-polluted soil using biostimulants obtained by fermentation processes: Effect on biological properties

Cited by 8 publications

References 57 publications

Use of Biostimulants Obtained from Sewage Sludge for the Restoration of Soils Polluted by Diuron: Effect on Soil Biochemical Properties

Use of Biostimulants Obtained from Sewage Sludge for the Restoration of Soils Polluted by Diuron: Effect on Soil Biochemical Properties

Study of the Biochemical Activity and Plant Growth Promoting Bacteria in Soils Polluted with Oxyfluorfen

Enzymatic Preparation of Mushroom By-product Protein Hydrolysates (Mb-PPHs)

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