Do Dipteryx alata Vogel seedlings recover the quality and the photosynthetic and antioxidant responses in the post-flooding?

2023 ◽  
Vol 83 ◽  
Author(s):  
J. A. Linné ◽  
M. V. Jesus ◽  
V. T. Lima ◽  
L. C. Reis ◽  
C. C. Santos ◽  
...  
Keyword(s):  
Seedling Quality ◽  
Cultivation Condition ◽  
Antioxidant Metabolism ◽  
Antioxidant Responses ◽  
Metabolic Characteristics ◽  
Antioxidant Enzyme System ◽  
Assessment Period ◽  
Flooding Period ◽  
Dipteryx Alata

Abstract Dipteryx alata Vogel is a tree species widely found in Cerrado, settling preferentially in well drained soils. Studies related to ecophysiology of D. alata may contribute to the decision making about using seedlings of this species in projects aimed at the recovery of degraded areas where seasonal flooding happens. This study aimed to assess the effects of flooding on photosynthetic and antioxidant metabolism and quality of D. alata seedlings cultivated or not under flooding during four assessment periods (0, 20, 40, and 60 days), followed by 100 days after the end of each assessment period (0+100, 20+100, 40+100, and 60+100 days), allowing verifying the potential for post-flooding recovery. Flooded plants showed lower photosynthetic efficiency than non-flooded plants, regardless of the periods of exposure. However, this efficiency was recovered in the post-flooding, with values similar to that of the non-flooded seedlings. Moreover, the damage to FV/FM was evidenced by an increase in the period of exposure to flooding, but recovery was also observed at this stage of the photosynthetic metabolism. Seedling quality decreased under flooding, not varying between periods of exposure, but remained lower although the increase observed in the post-flooding period, with no recovery after flooding. The occurrence of hypertrophied lenticels associated with physiological changes and an efficient antioxidant enzyme system might have contributed to the survival and recovery of these seedlings. Thus, this species is sensitive to flooding stress but capable of adjusting and recovering metabolic characteristics at 100 days after the suspension of the water stress, but with no recovery in seedling quality. Thus, we suggested plasticity under the cultivation condition and determined that the time of 100 days is not enough for the complete resumption of growth.

scholarly journals Effect of Methyl Jasmonate, Cytokinin, and Lavender Oil on Antioxidant Enzyme System of Apricot Fruit (Prunus armeniaca L.)

2021 ◽  
Vol 13 (15) ◽  
pp. 8565
Author(s):  
Seyda Cavusoglu ◽  
Nurettin Yilmaz ◽  
Firat Islek ◽  
Onur Tekin ◽  
Halil Ibrahim Sagbas ◽  
...  
Keyword(s):  
Enzyme Activity ◽  
Methyl Jasmonate ◽  
Prunus Armeniaca ◽  
Lavender Oil ◽  
Defense Systems ◽  
Antioxidant Enzyme System ◽  
Prunus Armeniaca L ◽  
Antioxidant Defense Systems ◽  
And Storage

Various treatments are carried out in order to extend both the shelf life and storage life of fresh fruit and vegetables after harvest and among them non-toxic for humans, environmentally and economically friendly alternative treatments are gained more importance. In the current study, methyl jasmonate (MeJA), cytokinin, and lavender oil which are eco-friendly and safe for human health were applied on apricot fruit. The treated fruit were stored at 0 °C and 90–95% relative humidity for 25 days and catalase (CAT), superoxide dismutase (SOD), and ascorbate peroxidase (APX) enzyme activities and lipid peroxidation of apricots after treatments were studied. According to the findings obtained from the study, it was observed that 5 ppm cytokinin and 1000 ppm lavender oil treatments of apricot fruit gave better APX and CAT enzyme activity, respectively. In addition, better SOD enzyme activity in fruit was obtained with MeJA+lavender oil treatments. As a result, it can be emphasized that the product quality of apricot fruit is preserved as both the eco-friendly application of MeJA, cytokinin, and lavender oil separately from each other and the treatment of combinations between these compounds activate the enzymatic antioxidant defense systems of apricot fruit after harvest.

scholarly journals Cold stress in the harvest period: effects on tobacco leaf quality and curing characteristics

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Yan Li ◽  
Ke Ren ◽  
Mengyang Hu ◽  
Xian He ◽  
Kaiyuan Gu ◽  
...  
Keyword(s):  
Cold Stress ◽  
High Altitude ◽  
Weather Forecast ◽  
Production Quality ◽  
Chemical Components ◽  
Leaf Quality ◽  
Tobacco Leaves ◽  
Tobacco Leaf ◽  
Antioxidant Enzyme System

Abstract Background Weather change in high-altitude areas subjects mature tobacco (Nicotiana tabacum L.) to cold stress, which damages tobacco leaf yield and quality. A brupt diurnal temperature differences (the daily temperature dropping more than 20 °C) along with rainfall in tobacco-growing areas at an altitude above 2450 m, caused cold stress to field-grown tobacco. Results After the flue-cured tobacco suffered cold stress in the field, the surface color of tobacco leaves changed and obvious large browning areas were appeared, and the curing availability was extremely poor. Further research found the quality of fresh tobacco leaves, the content of key chemical components, and the production quality were greatly reduced by cold stress. We hypothesize that cold stress in high altitude environments destroyed the antioxidant enzyme system of mature flue-cured tobacco. Therefore, the quality of fresh tobacco leaves, the content of key chemical components, and the production quality were greatly reduced by cold stress. Conclusion This study confirmed that cold stress in high-altitude tobacco areas was the main reason for the browning of tobacco leaves during the tobacco curing process. This adverse environment seriously damaged the quality of tobacco leaves, but can be mitigated by pay attention to the weather forecast and pick tobacco leaves in advance.

scholarly journals The influence of natural mineral water on the structural and functional changes in the rat kidneys under urolithiasis modelling

2020 ◽  
pp. 477-480
Author(s):  
Mykola KUCHERENKO ◽  
Boris NASIBULLIN ◽  
Elena BOBRO ◽  
Nataliia BADIUK ◽  
Victoria GLUSHCHENKO ◽  
...  
Keyword(s):  
Mineral Water ◽  
Organic Matter Content ◽  
Stone Disease ◽  
Matter Content ◽  
Functional Changes ◽  
Metabolic Characteristics ◽  
Complete Restoration ◽  
Positive Effect ◽  
Keywords Urolithiasis

In the experiment on the white Wistar rats, the authors evaluated kidneys changes in urolithiasis modelling (Kidney stone disease, KSD) and the possibility of correcting these changes by internal use of the mineral water (MW) with high organic matter content. The results of the studies revealed structural pathological changes in the kidneys in the form of changes of the part of glomeruli capillaries and gross changes in the kidneys tubules and interstitial layers. At the same time, the functional kidneys activity is manifested in the form of increased urination and a significant increase in urination. Urine metabolic characteristics are also change. The use of MW leads to an improvement in the capillaries of the renal corpuscles structure and almost complete restoration of the tubules structure. The functional activity of the kidneys and the quality of urine have significantly improving. The authors believe that the organic compounds of MW, which mainly determine its biological activity, contribute to the improvement of the regulation of metabolic processes and, accordingly, have a positive effect on the structural and functional parameters of the kidneys.. Keywords: urolithiasis, structural and functional characteristics of the kidneys, mineral water,

scholarly journals Se Nanoparticles Induce Changes in the Growth, Antioxidant Responses, and Fruit Quality of Tomato Developed under NaCl Stress

Molecules ◽  
2019 ◽  
Vol 24 (17) ◽  
pp. 3030 ◽  
Author(s):  
Mónica Carolina Morales-Espinoza ◽  
Gregorio Cadenas-Pliego ◽  
Marissa Pérez-Alvarez ◽  
Alma Delia Hernández-Fuentes ◽  
Marcelino Cabrera de la Fuente ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Positive Impact ◽  
Nacl Stress ◽  
Selenium Nanoparticles ◽  
Human Diet ◽  
Tomato Crop ◽  
Antioxidant Responses ◽  
The Impact ◽  
Positive Effect

Nanotechnology represents an opportunity to improve the use of elements in agriculture. Selenium is an element that is beneficial to plants and essential to the human diet. The size of nanoparticles gives them characteristics that can enhance the benefits that selenium provides to plants. The objective of the present study was to determine the effects of selenium nanoparticles on the growth, antioxidant responses, and fruit quality of tomato developed under NaCl stress. Four doses of selenium nanoparticles (1, 5, 10, and 20 mg L−1) under NaCl stress, only NaCl, and a control were evaluated. The results showed that the impact of salinity on the growth of the tomato crop can be reduced with the application of selenium nanoparticles. However, the amount of both enzymatic and non-enzymatic compounds significantly increased in the leaves and fruits of tomato. The results suggest that the application of selenium nanoparticles generated a positive effect against salinity in the tomato crop; moreover, it had a positive impact on the content of beneficial biocompounds for human health in tomato fruits.

Seedborne Pathogenic Fungi that Affect Seedling Quality of Red Angico (Anadenanthera macrocarpa) Trees in Brazil

2002 ◽  
Vol 150 (8-9) ◽  
pp. 451-455 ◽  
Author(s):  
O. D. Dhingra ◽  
C. B. Maia ◽  
D. C. Lustosa ◽  
J. B. Mesquita
Keyword(s):  
Pathogenic Fungi ◽  
Seedling Quality

scholarly journals The Effects of the Field Cold Stress in the Harvest Period on the Quality and Curing Characteristics of Tobacco Leaves

2020 ◽  
Author(s):  
Yan Li ◽  
Ke Ren ◽  
Mengyang Hu ◽  
Xian He ◽  
Kaiyuan Gu ◽  
...  
Keyword(s):  
Cold Stress ◽  
High Altitude ◽  
Antioxidant Enzyme ◽  
Enzyme System ◽  
Chemical Components ◽  
Tobacco Leaves ◽  
Antioxidant Enzyme System ◽  
Mature Period ◽  
Dark Green

Abstract Background: Climate change in high-altitude areas causes tobacco (Nicotiana tabacum L.) in its mature period to be subjected to cold stress, which damages the yield and quality of tobacco leaves. We found that abrupt diurnal temperature difference (the daily temperature drops more than 20℃), along with rainfall occurred in the tobacco-growing areas at an altitude above 2450 m, which caused cold stress to tobacco in field. Results: The change process of the surface color of tobacco leaves was normal to dark green (within 1 to 2 d), to purple red (within 2 to 3 d), then dark red (within 3 to 4 d), and finally off-white (within 4 to 6 d), the final leaves appear obvious large areas browning, and the curing availability was extremely poor. Further research found the quality of fresh tobacco leaves, the content of key chemical components, and the quality of production are greatly reduced by cold stress. The reason was cold stress in high altitude environment destroyed the antioxidant enzyme system of mature flue-cured tobacco. Cold stress in high altitude environment destroyed the antioxidant enzyme system of mature flue-cured tobacco. The quality of fresh tobacco leaves, the content of key chemical components, and the quality of production are greatly reduced by cold stress.Conclusion: In conclusion, this study confirmed that the field cold stress in high-altitude tobacco areas was the main reason for the obvious browning tobacco leaves during the tobacco curing process. This adversity environment seriously damaged the quality of tobacco leaves.

scholarly journals Substrates, emergence and seedling quality of Hymenaea stigonocarpa Mart. (Jatoba) in protected cultivation

2018 ◽  
pp. 615-622
Author(s):  
Léia Carla dos Santos Rodrigues Larson ◽  
Aparecida Conceição Boliani ◽  
Tiago Lima do Espírito Santo ◽  
Paulo Eduardo Teodoro ◽  
Edilson Costa
Keyword(s):  
Seedling Quality ◽  
Protected Cultivation

scholarly journals QUALIDADE DE MUDAS DE COPAÍBA PRODUZIDAS EM DIFERENTES SUBSTRATOS E NÍVEIS DE SOMBREAMENTO

FLORESTA ◽  
2015 ◽  
Vol 45 (3) ◽  
pp. 635 ◽  
Author(s):  
Tiago Reis Dutra ◽  
Paulo Henrique Grazziotti ◽  
Reynaldo Campos Santana ◽  
Marília Dutra Massad
Keyword(s):  
Quality Index ◽  
Block Design ◽  
Seedling Quality ◽  
Rice Hulls ◽  
Randomized Block Design ◽  
Copaifera Langsdorffii ◽  
Four Blocks

O presente trabalho teve como objetivo avaliar a influência de dois volumes de diferentes substratos e níveis de sombreamento sobre a qualidade de mudas de copaíba. O experimento foi conduzido por 130 dias em DBC casualizados no esquema fatorial 2 x 5, sendo avaliados dois volumes (180 e 280 cm³) dos substratos Bioplant®; 70% vermiculita + 30% casca de arroz carbonizada; 40% vermiculita + 30% casca de arroz carbonizada + 30% fibra de côco; 50% vermiculita + 30% casca de arroz carbonizada + 20% areia; e 70% vermiculita + 15% casca de arroz carbonizada + 15% vermicomposto. Essas dez combinações foram distribuídas aleatoriamente em quatro blocos com diferentes intensidades luminosas: 0, 30, 50 e 70% de sombreamento. O uso de 180 cm³ de substrato foi suficiente para produzir mudas de copaíba com bom desenvolvimento e índice de qualidade. Os substratos 70V+30CA, 40V+30CA+30FC, 50V+30CA+20A, 70V+15CA+15VC apresentaram-se superiores em relação ao Bioplant® para produção de mudas da espécie em estudo. Os resultados demonstraram que as mudas de copaíba comportaram-se de forma distinta em relação aos níveis de sombreamento avaliados, demonstrando possuírem grande plasticidade adaptativa.AbstractQuality of copaiba seedlings produced in two volumes of substrates and shading levels. This research aimed to evaluate the influence of two volumes of substrate and levels of shading on seedling quality of copaiba. The experiment was conducted for 130 days in a randomized block design in a 2 x 5 factorial scheme, we evaluated two volumes (180 e 280 cm³) of the five following substrates: Bioplant®, 70% vermiculite + 30% carbonized rice hulls, 40% vermiculite + 30% carbonized rice hulls + 30% coir, 50% vermiculite + 30% carbonized rice hulls + 20% sand and 70% vermiculite + 15% carbonized rice hulls + 15% vermicompost residue textiles. These ten combinations were randomly distributed in four blocks, accordingly to the following distinct brightness: 0, 30, 50 and 70 percentages of shading. The use of 180 cm³ substrate was enough to produce seedlings of copaiba with good development and quality index. The substrates 70V+30CA, 40V+30CA+30FC, 50V+30CA+20A, and 70V+15CA+15VC showed slight superiority over Bioplant® for seedlings of such species. The results revealed that the copaiba seedlings behaved differently in relation to shading levels evaluated, it demonstrates they have great adaptive plasticity.Keywords: Copaifera langsdorffii; production of seedlings; levels of brightness; containers.

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