α-Tocopherol levels in natural and artificial aging of soybean seeds

Giurizatto, Maria Izabel Krüger; Ferrarese-Filho, Osvaldo; Ferrarese, Maria de Lourdes Lúcio; Robaina, Antônio Dias; Gonçalves, Manoel Carlos; Cardoso, Cláudia Andréa Lima

doi:10.4025/actasciagron.v34i3.12660

Cited by 20 publications

(11 citation statements)

References 6 publications

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“…When seeds are subjected to severe stress there is a signifi cant increase in lipid peroxidation and the decrease in tocopherol production resulting in the defi ciency of antioxidant which is not balanced by another protective mechanism, thus causing the reduction of compounds in the seed (Giurizatto et al, 2012). This fact coincide with the observed in present study which resulted in a signifi cant antioxidant loss during storage.…”

Section: --------------------% -----------------supporting

confidence: 79%

“…Thus, the inverse action of natural antioxidants, such as tocopherol, may occur blocking the oxygen uptake by seed tissues, protecting the polyunsaturated fatty acids from peroxidation (Giurizatto et al, 2012). In cottonseeds the tocopherol content can range from 237 to 674 mg .kg -1 , depending on the cultivar used and on the growing and storage conditions.…”

Section: Introductionmentioning

confidence: 99%

“…To understand the process of seed deterioration, it is important to investigate the mechanisms and events related to the loss of viability and vigor, such as chromosome damage, decrease of enzymatic activity, degradation of respiratory and membrane system (Giurizatto et al, 2012). Chemical composition is another aspect that should be considered regarding the physiological quality of cottonseeds during storage because of their high oil and protein contents.…”

Section: Introductionmentioning

confidence: 99%

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Biochemical changes in fiber naturally colored cottonseeds during storage

Oliveira

Carvalho²,

Bárbara³

et al. 2016

J. Seed Sci.

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-The cotton seeds deterioration process with different chemical composition, in distinct environments is essential to the definition of adequate methods for storage. The deterioration involves cellular, metabolic and chemical changes and the behavior of the seeds' antioxidant defense system has an important role to control the speed and intensity of this process. The colored fiber of cottonseeds cv. BRS Verde and white fiber cv. BRS 187-8H were stored under controlled environment conditions (10 °C, 25 °C and 30 °C) for one year. The seeds were assessed for physiological quality, presence of microorganisms, chemical composition, oil and tocopherol contents by 90 day intervals. The cottonseed physiological potential began to decrease on day 90 particularly when the storage is carried out at 25 to 30 °C. Changes in lipid content and tocopherol are associated with the reduction of physiological quality. At temperatures above 25 °C the deterioration of cottonseeds is improved and decreases their physiological quality. Reduction in fat content and tocopherol and an increase in acidity and peroxide indicate loss of quality during storage.Index terms: Gossypium hirsutum, seed deterioration, germination, vigor.Alterações bioquímicas em sementes naturalmente coloridas de algodão durante o armazenamento RESUMO -O processo de deterioração de sementes de algodão com diferenças na composição química, em ambientes distintos, é fundamental para a definição de métodos adequados para o armazenamento. A deterioração envolve alterações celulares, metabólicas e químicas e o comportamento do sistema de defesa antioxidante das sementes tem papel importante para controlar a velocidade e a intensidade desse processo. Sementes de algodão de fibra colorida cultivar BRS Verde e de fibra branca cultivar BRS 187-8H foram armazenadas em ambientes controlados, a 10 ºC, 25 ºC e 30 ºC durante um ano. A cada 90 dias foram avaliados a qualidade fisiológica, sanitária e a composição química das sementes, do óleo e a determinação do teor de tocoferol. O potencial fisiológico das sementes decresceu a partir de 90 dias, principalmente quando realizado a 25 e 30 ºC. A variação no teor de lipídios e tocoferol está associada à redução da qualidade fisiológica durante a deterioração das sementes. A conservação de sementes de algodão acima de 25 °C é prejudicada, com redução na qualidade fisiológica. Decréscimos no teor de lipídios e tocoferol e aumento da acidez e peróxidos indicam perda da qualidade das sementes de algodão durante o armazenamento.Termos para indexação: Gossypium hirsutum, deterioração de sementes, germinação, vigor.

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Section: --------------------% -----------------supporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Biochemical changes in fiber naturally colored cottonseeds during storage

Oliveira

Carvalho²,

Bárbara³

et al. 2016

J. Seed Sci.

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“…Several previous researches were performed on both artificially and naturally aging of the same seed and revealed that, for the artificially aged seed, significant declination occurs compared to seeds in conventional storage conditions. The amount of α-tocopherol (an antioxidant that blocks the entrance of oxygen into the internal tissue of seed which causes deterioration) was present in high amounts in artificially aged seeds compared to naturally aged seeds where the experiment was done on four types of soybean cultivars [ 17 ]. Petruzzelli and Carella [ 18 ] conducted a research in 1983 on artificial and natural aged wheat seed and proved that artificially aging of seed amplifies the deteriorative changes for seed than naturally aging.…”

Section: Introductionmentioning

confidence: 99%

Classification Method for Viability Screening of Naturally Aged Watermelon Seeds Using FT-NIR Spectroscopy

Yasmin

Ahmed

Lohumi

et al. 2019

Sensors

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Viability analysis of stored seeds before sowing has a great importance as plant seeds lose their viability when they exposed to long term storage. In this study, the potential of Fourier transform near infrared spectroscopy (FT-NIR) was investigated to discriminate between viable and non-viable triploid watermelon seeds of three different varieties stored for four years (natural aging) in controlled conditions. Because of the thick seed-coat of triploid watermelon seeds, penetration depth of FT-NIR light source was first confirmed to ensure seed embryo spectra can be collected effectively. The collected spectral data were divided into viable and nonviable groups after the viability being confirmed by conducting a standard germination test. The obtained results showed that the developed partial least discriminant analysis (PLS-DA) model had high classification accuracy where the dataset was made after mixing three different varieties of watermelon seeds. Finally, developed model was evaluated with an external data set (collected at different time) of hundred samples selected randomly from three varieties. The results yield a good classification accuracy for both viable (87.7%) and nonviable seeds (82%), thus the developed model can be considered as a “general model” since it can be applied to three different varieties of seeds and data collected at different time.

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“…Non-enzymatic mechanisms include SSPs and low molecular weight antioxidants such as tocopherol (vitamin E), ascorbate, and glutathione etc. ( Sattler et al, 2004 ; Giurizatto et al, 2012 ; Sano et al, 2016 ). Arabidopsis VTE1 (a limiting factor in tocopherol biosynthesis), AtTIL (a temperature-induced lipocalin), and AtCHL (a chloroplastic lipocalin) are involved in lipid protection during seed aging ( Havaux et al, 2005 ; Boca et al, 2014 ; Nguyen et al, 2015 ).…”

Section: Introductionmentioning

confidence: 99%

Misregulation of ER-Golgi Vesicle Transport Induces ER Stress and Affects Seed Vigor and Stress Response

et al. 2018

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Seeds of higher plants accumulate numerous storage proteins to use as nitrogen resources for early plant development. Seed storage proteins (SSPs) are synthesized as large precursors on the rough endoplasmic reticulum (rER), and are delivered to protein storage vacuoles (PSVs) via vesicle transport, where they are processed to mature forms. We previously identified an Arabidopsis ER-localized tethering complex, MAG2 complex, which might be involved in Golgi to ER retrograde transport. The MAG2 complex is composed of 4 subunits, MAG2, MIP1, MIP2, and MIP3. Mutants with defective alleles for these subunits accumulated SSP precursors inside the ER lumen. Here, we report that the mag2-1 mip3-1 and mip2-1 mip3-1 double mutant have more serious vesicle transport defects than the mag2-1, mip2-1, and mip3-1 single mutants, since they accumulate more SSP precursors than the corresponding single mutants, and ER stress is more severe than the single mutants. The mag2-1 mip3-1 and mip2-1 mip3-1 double mutants show growth and developmental defects rather than the single mutants. Both single and double mutant seeds are found to have lower protein content and decreased germinating vigor than wild type seeds. All the mutants are sensitive to abscisic acid (ABA) and salt stress, and exhibit alteration in ABA signaling pathway. Our study clarified that ER-Golgi vesicle transport affects seed vigor through controlling seed protein quality and content, as well as plant response to environmental stress via influencing ABA signaling pathway.

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α-Tocopherol levels in natural and artificial aging of soybean seeds

Cited by 20 publications

References 6 publications

Biochemical changes in fiber naturally colored cottonseeds during storage

Biochemical changes in fiber naturally colored cottonseeds during storage

Classification Method for Viability Screening of Naturally Aged Watermelon Seeds Using FT-NIR Spectroscopy

Misregulation of ER-Golgi Vesicle Transport Induces ER Stress and Affects Seed Vigor and Stress Response

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