Effect of foliar application of amino acids on the salinity tolerance of tomato plants cultivated under hydroponic system

Alfosea-Simón, Marina; Zavala-González, Ernesto A.; Zapata, José María Cámara; Martínez-Nicolás, Juan José; Simón, I.; Simón-Grao, Silvia; Garcı́a-Sánchez, Francisco

doi:10.1016/j.scienta.2020.109509

Cited by 49 publications

(34 citation statements)

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“…Additionally, an assay performed with lettuce plants grown in a hydroponic system to which methionine was applied through the roots showed that this application notably improved the performance of the crop [11]. Likewise, in an experiment with tomato plants grown in a hydroponic system and under salt stress, Met treatment mitigated the negative effects of salinity [23]. Lastly, these positive effects of Met application were also previously verified in caupi pea plants under drought conditions [31], and in bitter melon plants as well [32].…”

Section: Discussionmentioning

confidence: 98%

“…The concentrations of Na, K, Mg, Ca, P, S, Fe, Cu, Mn, Zn, and B were determined from oven-dried leaf samples. These were ground to a fine powder and digested with HNO 3 :H 2 O 2 (5:3 v/v) using a microwave (CERM Mars Xpress, Matthews, NC, USA) with a temperature ramp that reached 200 • C. These were posteriorly analyzed using inductively coupled plasma mass spectrometry (ICP-MS, Iris Intrepid II, Thermo Electron Corporation, Franklin, TN, USA) [23]. Total C and N were analyzed with a Thermo Finnigan C/N elemental analyzer (Milan, Italy).…”

Section: Measuring the Concentration Of Mineral Nutrients In Leaf Tissuesmentioning

confidence: 99%

“…Along with this, the world population has increased considerably. This is said to be the general trend in the coming and ethylene, aside from favoring resistance to abiotic stresses through the S-adenosyl methionine (SAM) pathway [23,24]. Rai [25] showed that exogenous application of this amino acid could help plants tolerate or resist various abiotic stresses.…”

Section: Introductionmentioning

confidence: 99%

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Application of Biostimulants Containing Amino Acids to Tomatoes Could Favor Sustainable Cultivation: Implications for Tyrosine, Lysine, and Methionine

et al. 2020

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Tomato (Solanum lycopersicum L.) is one of the most important crops worldwide as per its production and the surface cultivated. The use of biostimulant products plays a fundamental role in mitigating the negative effects of climate change and reducing the use of conventional fertilizers. Many of these products are formulated with amino acids (AAs). This study was conducted to elucidate the effects of the foliar application of tyrosine (Tyr) (15 mM), lysine (Lys) (15 mM), methionine (Met) (15 mM), and a Tyr + Lys + Met (15 mM + 15 mM + 15 mM) mixture on the physiological and metabolic processes, vegetative growth, and nutritional state of Optima variety tomato plants. The results showed that application of the AAs, individually and combined, was beneficial for the growth of the aerial part, net assimilation of CO2, and water use efficiency (WUE). Application of Tyr resulted in the best WUE. The metabolomics study revealed that AA treatments increased the concentration of proline, fructose, and glucose, whose role was to stimulate glycolysis and the Krebs cycle. Thus, the plants could have greater reduction power and energy, as well as more carbon molecules for their growth processes.

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Section: Discussionmentioning

confidence: 98%

Section: Measuring the Concentration Of Mineral Nutrients In Leaf Tissuesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Application of Biostimulants Containing Amino Acids to Tomatoes Could Favor Sustainable Cultivation: Implications for Tyrosine, Lysine, and Methionine

et al. 2020

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“…Some synergic effects between AAs has been previously reported. In an experiment conducted with this same tomato variety under saline conditions ( Alfosea-Simón et al, 2020 ), it was observed that the Pro + Glu and Met + Trp mixtures were more efficient in palliating the effects of salinity as compared to the individual application of these AAs. Despite the positive effects of the application of Glutamic or Aspartic acids being observed on several occasions, such as in Kimchi plants grown in low temperatures ( Lee et al, 2017 ) or rice under an excess of Cd ( Rizwan et al, 2017 ), the positive effects of these two AAs applied simultaneously had never been previously described.…”

Section: Discussionmentioning

confidence: 98%

Physiological, Nutritional and Metabolomic Responses of Tomato Plants After the Foliar Application of Amino Acids Aspartic Acid, Glutamic Acid and Alanine

et al. 2021

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Agriculture is facing a great number of different pressures due to the increase in population and the greater amount of food it demands, the environmental impact due to the excessive use of conventional fertilizers, and climate change, which subjects the crops to extreme environmental conditions. One of the solutions to these problems could be the use of biostimulant products that are rich in amino acids (AAs), which substitute and/or complement conventional fertilizers and help plants adapt to climate change. To formulate these products, it is first necessary to understand the role of the application of AAs (individually or as a mixture) in the physiological and metabolic processes of crops. For this, research was conducted to assess the effects of the application of different amino acids (Aspartic acid (Asp), Glutamic acid (Glu), L-Alanine (Ala) and their mixtures Asp + Glu and Asp + Glu + Ala on tomato seedlings (Solanum lycopersicum L.). To understand the effect of these treatments, morphological, physiological, ionomic and metabolomic studies were performed. The results showed that the application of Asp + Glu increased the growth of the plants, while those plants that received Ala had a decreased dry biomass of the shoots. The greatest increase in the growth of the plants with Asp + Glu was related with the increase in the net CO2 assimilation, the increase of proline, isoleucine and glucose with respect to the rest of the treatments. These data allow us to conclude that there is a synergistic effect between Aspartic acid and Glutamic acid, and the amino acid Alanine produces phytotoxicity when applied at 15 mM. The application of this amino acid altered the synthesis of proline and the pentose-phosphate route, and increased GABA and trigonelline.

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“…In fact, the foliar application of 4 mM methionine improved the yield of cowpea (Vigna unguiculata) under stress due to water-deficit, as well as the physiological and morphological features of the plant (Merwad et al, 2018). In a recent study (Alfosea-Simón et al, 2020). Met alone is capable of increasing tolerance to salt stress in tomatoes (Solanum lycopersicum) grown in hydroponic conditions.…”

Section: Proteinogenic Amino Acidsmentioning

confidence: 97%

Pure Organic Active Compounds Against Abiotic Stress: A Biostimulant Overview

et al. 2020

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Biostimulants (BSs) are probably one of the most promising alternatives nowadays to cope with yield losses caused by plant stress, which are intensified by climate change. Biostimulants comprise many different compounds with positive effects on plants, excluding pesticides and chemical fertilisers. Usually mixtures such as lixiviates from proteins or algal extracts have been used, but currently companies are interested in more specific compounds that are capable of increasing tolerance against abiotic stress. Individual application of a pure active compound offers researchers the opportunity to better standarise formulations, learn more about the plant defence process itself and assist the agrochemical industry in the development of new products. This review attempts to summarise the state of the art regarding various families of organic compounds and their mode/mechanism of action as BSs, and how they can help maximise agricultural yields under stress conditions aggravated by climate change.

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Effect of foliar application of amino acids on the salinity tolerance of tomato plants cultivated under hydroponic system

Cited by 49 publications

References 50 publications

Application of Biostimulants Containing Amino Acids to Tomatoes Could Favor Sustainable Cultivation: Implications for Tyrosine, Lysine, and Methionine

Application of Biostimulants Containing Amino Acids to Tomatoes Could Favor Sustainable Cultivation: Implications for Tyrosine, Lysine, and Methionine

Physiological, Nutritional and Metabolomic Responses of Tomato Plants After the Foliar Application of Amino Acids Aspartic Acid, Glutamic Acid and Alanine

Pure Organic Active Compounds Against Abiotic Stress: A Biostimulant Overview

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