Protein hydrolysates as biostimulants in horticulture

Colla, Giuseppe; Nardi, Serenella; Cardarelli, Mariateresa; Ertani, Andrea; Lucini, Luigi; Canaguier, Renaud; Rouphael, Youssef

doi:10.1016/j.scienta.2015.08.037

Cited by 499 publications

(469 citation statements)

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“…Protein hydrolysates are mixtures of polypeptides, oligopeptides, and free amino acids derived from partial hydrolysis of agricultural by-products from animals and plants [7]. Carbohydrates, proteins, amino acids, and lipids may increase stress tolerance through different (Fig.…”

Section: Carbohydrates Proteins Amino Acids and Lipidsmentioning

confidence: 99%

“…Protein hydrolysates (PH) are often sold as formulations that include plant growth regulators. The bulk of PH products, over 90%, are produced from chemical hydrolysis of animal by-products while enzymatically processed plant-based products are a recent development [7]. Megafol (Valagro, Atessa, Chieti, ITALY) is a commercial biostimulant comprising vitamins, amino acids, proteins, and betaines from plant and algal extracts.…”

Section: Carbohydrates Proteins Amino Acids and Lipidsmentioning

confidence: 99%

“…The role of biostimulants, specifically in regard to growth promotion and nutrient availability, has been reviewed (du Jardin [1,[4][5][6]). In addition to numerous general reviews, many categories of specific biostimulants have been extensively reviewed such as protein hydrolysates [7], seaweed extracts [8], silicon [9], chitosan [10], humic and fulvic acids [11], the role of phosphite [12], arbuscular mycorrhizal fungi [13], trichoderma [14], plant growth-promoting rhizobacteria [15]. These reviews have focused on plant growth promotion and biotic stress but our intent with this review is to comprehensively address what is known about biostimulants ameliorating the effects of abiotic stress ( Table 1).…”

Section: Introductionmentioning

confidence: 99%

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The role of biostimulants and bioeffectors as alleviators of abiotic stress in crop plants

Oosten

Pepe

Pascale

et al. 2017

Chem. Biol. Technol. Agric.

654

399

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The use of bioeffectors, formally known as plant biostimulants, has become common practice in agriculture and provides a number of benefits in stimulating growth and protecting against stress. A biostimulant is loosely defined as an organic material and/or microorganism that is applied to enhance nutrient uptake, stimulate growth, enhance stress tolerance or crop quality. This review is intended to provide a broad overview of known effects of biostimulants and their ability to improve tolerance to abiotic stresses. Inoculation or application of extracts from algae or other plants have beneficial effects on growth and stress adaptation. Algal extracts, protein hydrolysates, humic and fulvic acids, and other compounded mixtures have properties beyond basic nutrition, often enhancing growth and stress tolerance. Non-pathogenic bacteria capable of colonizing roots and the rhizosphere also have a number of positive effects. These effects include higher yield, enhanced nutrient uptake and utilization, increased photosynthetic activity, and resistance to both biotic and abiotic stresses. While most biostimulants have numerous and diverse effects on plant growth, this review focuses on the bioprotective effects against abiotic stress. Agricultural biostimulants may contribute to make agriculture more sustainable and resilient and offer an alternative to synthetic protectants which have increasingly falling out of favour with consumers. An extensive review of the literature shows a clear role for a diverse number of biostimulants that have protective effects against abiotic stress but also reveals the urgent need to address the underlying mechanisms responsible for these effects.

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Section: Carbohydrates Proteins Amino Acids and Lipidsmentioning

confidence: 99%

Section: Carbohydrates Proteins Amino Acids and Lipidsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The role of biostimulants and bioeffectors as alleviators of abiotic stress in crop plants

Oosten

Pepe

Pascale

et al. 2017

Chem. Biol. Technol. Agric.

654

399

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“…As defined by the European Biostimulants Industry Council [3], plant biostimulants contain microorganism(s) and/or substance(s) whose function, when applied to plants or the rhizosphere, is to stimulate natural processes to enhance/benefit nutrient uptake, nutrient efficiency, tolerance to abiotic stress, and crop quality [4][5][6]. Protein hydrolysate-based biostimulants contain free amino acid, oligo and polypeptides achieved through enzymatic and/or chemical hydrolysis of proteins, especially from vegetal or animal sources [7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…Traditionally, chemical hydrolysis is achieved with strong acids (e.g., chloride acid), and extreme temperatures (>130 • C), and generally yields products with low agronomic quality, since some important amino acids (e.g., tryptophan) and peptides are destroyed during the production process [13]. One way of reducing losses of amino acids and peptides during the process would be through digestion of proteins with enzymes [14].…”

Section: Introductionmentioning

confidence: 99%

Analyzing the Environmental Impact of Chemically-Produced Protein Hydrolysate from Leather Waste vs. Enzymatically-Produced Protein Hydrolysate from Legume Grains

et al. 2017

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Protein hydrolysates are largely used as plant biostimulants for boosting crop growth, and improving crop tolerance to abiotic stresses and fruit quality. Protein hydrolysate-based biostimulants are mostly produced by chemical hydrolysis starting from animal wastes. However, an innovative process of enzymatic hydrolysis of legume-derived proteins has been recently introduced by few companies. The objective of this study was to evaluate the energy use and environmental impact of the production processes of enzymatically-produced protein hydrolysate starting from lupine seeds and protein hydrolysate obtained from chemical hydrolysis of leather wastes through the application of life cycle assessment (LCA). The LCA method was applied through the software GEMIS "Global Emission Model for Integrated Systems", elaborated at L'Oko-Institute in Germany, and the parameters taken into account were: CO 2 emissions in g per kg of protein hydrolysate; the consumption of fossil energy expressed in MJ per kg of protein hydrolysate; and water consumption reported in kg per kg of protein hydrolysate. In the case of legume-derived protein hydrolysate, the evaluation of the energy use and the environmental impact started from field production of lupine grains and ended with the industrial production of protein hydrolysate. In the case of animal-derived protein hydrolysate, the LCA method was applied only in the industrial production process, because the collagen is considered a waste product of the leather industry. The type of hydrolysis is the step that most affects the energy use and environmental impact on the entire industrial production process. The results obtained in terms of CO 2 emissions, fossil energy consumption and water use through the application of LCA showed that the production process of the animal-derived protein hydrolysate was characterized by a higher energy use (+26%) and environmental impact (+57% of CO 2 emissions) in comparison with the enzymatic production process of lupine-derived protein hydrolysate. In conclusion, the production of legume-derived protein hydrolysate by enzymatic hydrolysis is more environmentally friendly than the production of animal-derived protein hydrolysate through chemical hydrolysis.

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