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Application of Protein Hydrolysate Improved the Productivity of Soybean under Greenhouse Cultivation

Author

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  • Daniele Caroline Hörz Engel

    (Department of Crop Science, Luiz de Queiroz College of Agriculture, University of São Paulo, Cx. Postal 9, Piracicaba CEP 13418-900, SP, Brazil)

  • Daniela Feltrim

    (Department of Crop Science, Luiz de Queiroz College of Agriculture, University of São Paulo, Cx. Postal 9, Piracicaba CEP 13418-900, SP, Brazil)

  • Mayara Rodrigues

    (Department of Crop Science, Luiz de Queiroz College of Agriculture, University of São Paulo, Cx. Postal 9, Piracicaba CEP 13418-900, SP, Brazil)

  • João Leonardo Corte Baptistella

    (Department of Crop Science, Luiz de Queiroz College of Agriculture, University of São Paulo, Cx. Postal 9, Piracicaba CEP 13418-900, SP, Brazil)

  • Paulo Mazzafera

    (Department of Crop Science, Luiz de Queiroz College of Agriculture, University of São Paulo, Cx. Postal 9, Piracicaba CEP 13418-900, SP, Brazil
    Department of Plant Biology, Institute of Biology, University of Campinas, P.O. Box 6109, Campinas CEP 13083-862, SP, Brazil)

Abstract

Protein hydrolysates are plant biostimulants containing amino acids, oligopeptides, and peptides in their composition. When supplied to plants, protein hydrolysates (HPs) have been identified to improve nitrogen metabolism, enhance the activity of antioxidant enzymes, boost plant defense response to stresses, and positively impact the quantity and quality of products. Soybean is a crucial global commodity, with nitrogen being the primary nutrient for crop development as it directly affects productivity. This study aimed to evaluate the effect of an HP-based biostimulant on the N metabolism in nodulated soybean plants and their productivity. A greenhouse experiment was conducted to test two modes of application of the 0.20% HP-based biostimulant. Soybean plants, growing in pots, were treated with 0.20% HP either via seed treatment or foliar application (at growth stages V3 and V5). Activities of enzymes and compounds related to N metabolism, gene expression, and productivity components were analyzed. It was observed that the mode of application did not significantly influence the results. The application of HPs increased the concentration of nitrate, amino acids, and ureides in soybean leaves. It also positively altered the expression of genes such as nitrate reductase, urease, and asparagine. Additionally, it enhanced productivity, resulting in plants with a greater number and weight of pods and grains. Therefore, it is possible to consider HPs as a stimulator for increasing soybean productivity, even under non-stressing conditions.

Suggested Citation

  • Daniele Caroline Hörz Engel & Daniela Feltrim & Mayara Rodrigues & João Leonardo Corte Baptistella & Paulo Mazzafera, 2024. "Application of Protein Hydrolysate Improved the Productivity of Soybean under Greenhouse Cultivation," Agriculture, MDPI, vol. 14(8), pages 1-10, July.
    • Handle: RePEc:gam:jagris:v:14:y:2024:i:8:p:1205-:d:1440589
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    References listed on IDEAS

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    1. Leen Almadi & Andrea Paoletti & Nicola Cinosi & Elissa Daher & Adolfo Rosati & Claudio Di Vaio & Franco Famiani, 2020. "A Biostimulant Based on Protein Hydrolysates Promotes the Growth of Young Olive Trees," Agriculture, MDPI, vol. 10(12), pages 1-10, December.
    2. Ewa Mackiewicz-Walec & Marzenna Olszewska, 2023. "Biostimulants in the Production of Forage Grasses and Turfgrasses," Agriculture, MDPI, vol. 13(9), pages 1-33, September.
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