Nitrogen fertilization affects Fourier Transform Infrared spectra (FTIR) in Physalis L. species

Leite, Romeu da Silva; Hernández-Navarro, Salvador; Nascimento, Marilza Neves do; Potosme, Norlan Miguel Ruiz; Carrión-Prieto, Paula; Souza, Elma dos Santos

doi:10.1016/j.compag.2018.05.021

Cited by 19 publications

(12 citation statements)

References 33 publications

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“…Our data show that a higher dose of both selenium and glycine betaine (as BYV) does not necessarily lead to a better development of Micro-Tom plants, and may even have a possible inhibitory effect due to nitrogen and/or selenium excess [39,79]. Such a response of physiological parameters (i.e., stomatal conductance) of tomato plants, not in direct relationship to the applied dose, has been already reported for glycine-betaine [80].…”

Section: Discussionsupporting

confidence: 62%

Plant Biostimulant Effects of Baker’s Yeast Vinasse and Selenium on Tomatoes through Foliar Fertilization

et al. 2020

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The application of selenium (Se) to tomatoes enhances accumulation of bioactive compounds. The physiological window of Se is very narrow, and Se overdose reduces the yield. Glycine betaine was shown to reduce Se’s negative effects on plants and to potentiate its beneficial effects. In this study, baker’s yeast vinasse (BYV), as an affordable source of glycine betaine, was tested for its interaction with Se in an optimized foliar fertilizer. The application dose was selected after a laboratory experiment, wherein assays on plant height, leaves surfaces, stomatal conductance, and chlorophyll fluorescence were done. The Se and BYV supplemented foliar fertilizers were tested for their effects on accumulation of bioactives in drip-irrigated tomatoes cultivated in a greenhouse. Under laboratory conditions, assays demonstrated Se and BYV induced effects on tomatoes plants. Both the stomatal conductance and photosynthesis efficiency increased compared to a water treated control. The greenhouse experiment demonstrated that BYV and Se addition increases the number of tomato fruits in the “extra” marketable class and enhances the accumulation of ascorbic acid, carotenes, polyphenols, and flavonoids. The effects depend on the composition of the foliar fertilizer, the most significant effects being recorded for the foliar applied product with the highest BYV and nitrogen content.

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Section: Discussionsupporting

confidence: 62%

Plant Biostimulant Effects of Baker’s Yeast Vinasse and Selenium on Tomatoes through Foliar Fertilization

et al. 2020

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“…The main assigned stretching (ν) and bending (δ) peaks identified in the ATR-FTIR spectra of leaves [ 28 , 29 , 30 , 31 ] are listed in the Table 4 .…”

Section: Resultsmentioning

confidence: 99%

“…ATR-FTIR spectroscopy was used to compare the biochemical profile of grassland plant species related to land-use intensity [ 29 ] to determine how nitrogen fertilisation affects FTIR spectra in Physalis L. species [ 31 ], how a protein based biostimulant influences maize development [ 28 ], and even for rapid diagnosis of nitrogen status in rice from the amide I to amide II band intensity ratios [ 30 ]. Our study led to comparable results showing the potential of using ATR-FTIR data to monitor the influence of various keratin hydrolysates in Zea mays development.…”

Section: Discussionmentioning

confidence: 99%

“…Three different structures and compositions of keratin enzymatic hydrolysates, but also mesoscale properties like particle sizes showed biostimulant activity on Zea mays . ESPE hydrolysates showed the most important modifications in ATR spectra toward the control and VALKE hydrolysates in correlation with the experimentally proven performance on maize development, which can be attributed to the role of amino acids and oligopeptides as signal molecules in regulating the physiological mechanisms of growth and adaptation [ 31 ]. More thorough studies are necessary to infer the influence and mechanisms of enzymatic keratin hydrolysate biostimulant activity in Zea mays plant via hormone-like or antioxidant activity.…”

Section: Discussionmentioning

confidence: 99%

“…(a) (b) The main assigned stretching (ν) and bending (δ) peaks identified in the ATR-FTIR spectra of leaves [28][29][30][31] are listed in the Table 4. The leaves of plants treated with ESPE and VALKE hydrolysates showed evident structural differences by means of spectral modifications in terms of higher intensity bands compared to the control leaves: in the aliphatic region at 2917 and 2849 cm −1 and also in the protein region due to an enhancement of amide I at 1640 cm −1 and amide II at 1555 cm −1 bands.…”

Section: Bioactive Keratin Hydrolysates For Plant Growth Biostimulationmentioning

confidence: 99%

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Wool Keratin Hydrolysates for Bioactive Additives Preparation

et al. 2021

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The aim of this paper was to select keratin hydrolysate with bioactive properties by using the enzymatic hydrolysis of wool. Different proteolytic enzymes such as Protamex, Esperase, and Valkerase were used to break keratin molecules in light of bioactive additive preparation. The enzymatic keratin hydrolysates were assessed in terms of the physico-chemical characteristics related to the content of dry substance, total nitrogen, keratin, ash, cysteic sulphur, and cysteine. The influence of enzymatic hydrolysis on molecular weight and amino acid composition was determined by gel permeation chromatography (GPC) and gas chromatography-mass spectrometry (GC-MS) analyses. Antimicrobial activity of keratin hydrolysates was analysed against Fusarium spp., a pathogenic fungus that can decrease the quality of plants. The bioactivity of enzymatic hydrolysates was tested on maize plants and allowed us to select the keratin hydrolysates processed with the Esperase and Valkerase enzymes. The ratio of organised structures of hydrolysate peptides was analysed by attenuated total reflectance-Fourier transform infrared (ATR-FTIR) deconvolution of the amide I band and may explain the difference in their bioactive behaviour. The most important modifications in the ATR spectra of maize leaves in correlation with the experimentally proven performance on maize development by plant length and chlorophyll index quantification were detailed. The potential of enzymatic hydrolysis to design additives with different bioactivity was shown in the case of plant growth stimulation.

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