Evaluation of biochemical and physiological changes in seeds of Jatropha curcas L. Under natural aging, accelerated aging and saturated salt accelerated aging

Suresh, A.; Shah, Nikita; Kotecha, Mansi; Robin, Pushpa

doi:10.1016/j.scienta.2019.05.014

Cited by 14 publications

(16 citation statements)

References 39 publications

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“…ROS can attack DNA, causing breakage of DNA strands and deoxyribose sugar and peroxidise membrane lipids (Suresh et al, 2019). Such oxidative damage inhibits mitosis (McDonald, 1999;Bailly, 2004), resulting in delayed germination and reduced seed vigour and seedling biomass (Suresh et al, 2019), as observed in this study.…”

Section: Resultssupporting

confidence: 59%

“…It seems likely that these changes are at least in part a result of accelerationin the accumulation of ROS that occurs during deterioration (Kranner et al, 2010). ROS can attack DNA, causing breakage of DNA strands and deoxyribose sugar and peroxidise membrane lipids (Suresh et al, 2019). Such oxidative damage inhibits mitosis (McDonald, 1999;Bailly, 2004), resulting in delayed germination and reduced seed vigour and seedling biomass (Suresh et al, 2019), as observed in this study.…”

Section: Resultsmentioning

confidence: 56%

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Germination indices of orthodox seeds as influenced by controlled deterioration and cathodic water seed invigoration

Fatokun¹,

Beckett²,

Varghese³

et al. 2020

JEB

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The aim of this study was to test the effects of priming on the germination of deteriorated orthodox seeds of five plant species.The water content of seeds were raised to 14%, and the seeds then deteriorated to 50% viability o at 40 C and 100% relative humidity. Deteriorated seeds and fresh seeds of test species were then primed with cathodic water, un-electrophorized calcium magnesium solution and deionised water. Unprimed fresh and unprimed controlled deteriorated seeds served as controls. Germination indices were determined.In general, all priming treatments had positive effects on the germination indices of deteriorated seeds of all species, and a lesser extent on fresh seeds. However, seeds treated with cathodic water performed better than seeds treated with either CaMg solution or deionised water. While controlled deterioration reduced DNA concentrations and the DNA purity of seeds, priming, particularly with cathodic water had a protecting effect on DNA. Priming also boosted amylase activities in both fresh and deteriorated seeds.Results are consistent with cathodic water reducing oxidative stress during imbibition. Cathodic water seed priming, therefore, has the potential to play a significant role in the conservation of orthodox seeds.

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Section: Resultssupporting

confidence: 59%

Section: Resultsmentioning

confidence: 56%

Germination indices of orthodox seeds as influenced by controlled deterioration and cathodic water seed invigoration

Fatokun¹,

Beckett²,

Varghese³

et al. 2020

JEB

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“…Because they are unstable, they have high oxidative activity and their activity is lively. Lipid peroxidation increases when they react with unsaturated fatty acids, which are present in the cell membrane [1]. The chain reaction of free radicals will occur because lipid peroxidation may decompose more free radicals.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, and the Antioxidant Activity of Carboxymethyl Chitosan Derivatives Containing Thiourea Salts

et al. 2019

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A new class of chitosan derivatives possessing thiourea salts were synthesized to improve the solubility and the antioxidant activity of chitosan. Firstly, chitosan was modified to carboxymethyl chitosan, combining carboxymethyl chitosan with thiourea salts that have different structures to form new chitosan derivatives. The chitosan and chitosan derivatives were characterized by FT-IR, 13C NMR, TGA, and elemental analyses. The new peaks of thiourea salts could be clearly observed at about 1240 cm–1 in the IR spectra, and the peak of C=S was clearly observed at around 180 ppm in the 13C NMR. IR spectra and 13C NMR of the structural units of these polymers validated the chitosan derivatives possessing thiourea salts were successfully synthesized. Their antioxidant properties were tested, including DPPH-radical scavenging ability, superoxide-radical scavenging ability, and hydroxyl-radical scavenging ability. Our results suggested the increase of thiourea salt groups in chitosan derivatives promotes the scavenging effect. The scavenging activity of 4TMCMCS, TMCMCS. 4,4DCMCS, and 4ACMCS against DPPH-radical and superoxide-radical were more than 90% at 1.6 mg/mL, respectively. In the cytotoxicity assay, no cytotoxicity was observed for the L929 cells with chitosan and its derivatives at all testing concentrations. These results demonstrated that the combination of chitosan and thiourea salt groups improved the antioxidant activity of chitosan, and the antioxidants or free radical scavengers based on natural polymers and thiourea salts showed potential applications.

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“…The present study confirms the negative correlation between seed germination, increased H2O2 content and decreased seed viability after AA at 43 °C. In seed aging studies, ROS-like H2O2 plays a very important role in oxidation of all molecules found in cellular structures [7,33]. Enzymatic lipid peroxidation, H2O2 accumulation and the formation of free radicals may be the main cause of seed degradation in oilseed plants such as safflower [20,34].…”

Section: Discussionmentioning

confidence: 99%

“…During the harvest and seed storage, seeds are exposed to different conditions leading to seed deterioration and reduced viability [6]. Storage of oilseeds is difficult than the other seeds because oilseeds are very susceptible to seed degradation [7]. In addition, safflower seed is categorized as weak storer since its viability and oil quality reduces after 1-1.5 years of storage under normal storage terms [8].…”

Section: Introductionmentioning

confidence: 99%

Determination of Hydrogen Peroxide Content and Antioxidant Enzyme Activities in Safflower (Carthamus tinctorius L.) Seeds After Accelerated Aging Test

Önder

Güvercin

Tonguç

2020

Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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Safflower is an important oleiferous crop species in the world. Aging tests are used to simulate cell damage occurring during the long term storage of seeds. In the present study, accelerated aging (AA) test was employed to investigate response of antioxidant enzymes in safflower. Four genotypes of safflower, previously classified as aging resistant (Bayer-6 and Bayer-12) and sensitive (Olas and Linas) based on AA test, were used as seed materials and AA treatments at 43 °C consisted of 5 different times (0, 48, 72, 96 and 120 h). Variance analysis were used and means were separated according to significance levels, and correlations were calculated between hydrogen peroxide (H2O2) content, superoxide dismutase (SOD) and catalase (CAT) activities. The H2O2 content, CAT, SOD and peroxidase (POD) activities were measured in control and AA treated seeds. Genotype, time and genotype x time interactions were all significant. While H2O2 content and SOD activity increased with AA time, CAT activity decreased in all genotypes throughout the experiment. POD did not show regular increase or decrease, its activity was specific to genotypes and time. Correlations between CAT activity and H2O2 content were significant negative for all genotypes, but between SOD activity and H2O2 content was positively correlated in AA treated seeds.

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Evaluation of biochemical and physiological changes in seeds of Jatropha curcas L. Under natural aging, accelerated aging and saturated salt accelerated aging

Cited by 14 publications

References 39 publications

Germination indices of orthodox seeds as influenced by controlled deterioration and cathodic water seed invigoration

Germination indices of orthodox seeds as influenced by controlled deterioration and cathodic water seed invigoration

Synthesis, Characterization, and the Antioxidant Activity of Carboxymethyl Chitosan Derivatives Containing Thiourea Salts

Determination of Hydrogen Peroxide Content and Antioxidant Enzyme Activities in Safflower (Carthamus tinctorius L.) Seeds After Accelerated Aging Test

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