Activity of antioxidant enzymes and proline accumulation in Erythrina velutina Willd. seeds subjected to abiotic stresses during germination

Ribeiro, Renata Conduru; Matias, J. R.; Pelacani, Claudinéia Regina; Dantas, B. F.

doi:10.1590/2317-1545v32n2956

Cited by 22 publications

(5 citation statements)

References 33 publications

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“…Similar to the result found by Ribeiro et al (2014), proline contents remained constant or had a slight increase with a decrease in osmotic potential, however, with potentials lower than -0,2MPa there was a reduction of proline relative to its initial contents. It is inferred that in mulungu plants, which are from a dry region, proline production seems to be associated with this situation to a certain extent as a form of plant osmoprotective mechanism (Kishor et al, 2005).…”

Section: Discussionsupporting

confidence: 86%

Plant Growth, Antioxidative Enzymes, Lipid Peroxidation and Organic Solute Contents in Mulungu Seedlings (Erythrina velutina) Under Different Field Capacities

Martins¹,

Brito²,

Arruda³

et al. 2018

JAS

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Erythrina velutina (mulungu) is an endemic species of caatinga found in Northeast Brazil. As a result of its rapid plant growth, the species may be an alternative for the recovery of degraded areas. Thus, the present study aimed to analyze the effects of irrigation with different field capacilities (FC): 20, 50 and 80% on plant growth, antioxidative enzyme activities, membrane lipid peroxidation and organic solute contents in mulungu seedlings under greenhouse conditions. The experiment was carried out at Instituto Federal Educação, Ciência e Tecnologia do Ceará (IFCE)-Campus Maracanaú, Ceará, Brazil. Under the presented experimental conditions, E. velutina plants showed higher growth variables (dry matter yield and leaf area) when submitted to daily irrigation of 50% of FC. Irrigation at 20% of FC caused a small water deficit. However, 80% of FC watering may have resulted in an excess of water. In general, despite the reduction in plant growth in plants irrigated at 20% of FC, the activities of the antioxidant enzymes did not differ substantially between treatments. In general, the lowest organic solute contents were detected in irrigations at 20 or 80% of FC.

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Section: Discussionsupporting

confidence: 86%

Plant Growth, Antioxidative Enzymes, Lipid Peroxidation and Organic Solute Contents in Mulungu Seedlings (Erythrina velutina) Under Different Field Capacities

Martins¹,

Brito²,

Arruda³

et al. 2018

JAS

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“…Erythrina velutina (mulungu) is a xerophilic plant that is native exclusively to a Brazilian biome called Caatinga, located in the semiarid region of Brazil. This plant is commonly used for medicinal purposes, lumber, handicrafts, ornamental use, and now as a component of agroforestry systems 1 . Xerophilic seeds such as E. velutina exhibit dormancy (resistance to germination) as a mechanism of survival and adaptation to challenging climatic conditions 2 .…”

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confidence: 99%

Water uptake mechanism and germination of Erythrina velutina seeds treated with atmospheric plasma

Alves

Vitoriano

Silva

et al. 2016

Sci Rep

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The effect of plasma applied to mulungu (Erythrina velutina) seeds was studied to verify its influence on the germination, water absorption, wettability and structure of the seeds. The plasma jet used in this study was produced by dielectric barrier discharge (DBD) in a helium gas flow of 0.03 L/s at a distance of 13 mm for 60 s. The plasma treatment significantly affected the seed germination rate, which was approximately 5% higher than that of the untreated group. Micropyle and hilum contributed a greater proportion to uptake. When sealed in the hilar or micropyle regions the amount of water absorbed into the seed decreased approximately 75% compared to the unsealed seed. This difference suggests that these two regions together act cooperatively in the water absorption. However, when plasma treated seed was blocked in the micropyle region, water absorption was higher higher than in seeds blocked hilum. This difference suggests that the plasma treatment changed the wettability of the hilum more effectively than it changed the micropyle. These results indicate that plasma can significantly change the hydrophilicity, water absorption and percentage of seed germination in E. velutina.

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“…The supernatant (crude extract) was stored in microtubes at -20°C for quantification of total proteins total soluble sugars, and reducing sugars (RIBEIRO et al, 2012). Four days after sowing seeds in saline solutions, the cotyledon and embryonic axis of 100 seedlings were collected to extract and quantify the enzyme activity of ascorbate peroxidase (APX, enzyme commission 1.11.1.11), catalase (CAT, enzyme commission 1.11.1.6) and glutathione-S-transferase (GST, enzyme commission 2.5.1.18), according to the methodology described by Ribeiro et al (2014).…”

Section: Methodsmentioning

confidence: 99%

Physiological changes in seeds and seedlings of pumpkins submitted to salt stress

Dantas¹,

Matias²,

Aragão³

et al. 2019

Biosci. J.

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Salinity is one of the most limiting environmental factors for plant growth in semi-arid regions. Excess of salts reduces water potential, causes physiological drought and can influence germination and initial growth of plants. The objective of this work was to study physiological and metabolic changes in seeds and seedlings of pumpkin (Cucurbita pepo cultivars Caserta and Redonda and C. maxima cv. Coroa) in a saline condition of salt stress. Thus, we it was quantified germination parameters; seedlings growth; seeds and seedlings respiration; degradation of total soluble sugars, reducing sugars and total proteins in cotyledons and the activity ascorbate peroxidase (APX), glutathione-S-transferase (GST) and catalase (CAT) during germination and initial growth of the pumpkin species studied in saline conditions. The experimental design was totally randomized in a factorial scheme 6x3, with six electrical conductivities (0; 2; 4; 6; 8 e 10 dS.m-1) and three cultivars (Redonda, Caserta and Coroa). Salinity did not influence the rate of seed respiration during the germination, although seedlings respiration decreased, as well as its vigour. Total sugars were degraded, while there was accumulation of reducing sugars and proteins in cotyledons of germinating seeds in salt solutions. Increased electrical conductivity reduced APX activity in the embryo and CAT in cotyledons, but did not influence GST. Pumpkin seedlings showed low tolerance to salt stress.

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Activity of antioxidant enzymes and proline accumulation in Erythrina velutina Willd. seeds subjected to abiotic stresses during germination

Cited by 22 publications

References 33 publications

Plant Growth, Antioxidative Enzymes, Lipid Peroxidation and Organic Solute Contents in Mulungu Seedlings (Erythrina velutina) Under Different Field Capacities

Plant Growth, Antioxidative Enzymes, Lipid Peroxidation and Organic Solute Contents in Mulungu Seedlings (Erythrina velutina) Under Different Field Capacities

Water uptake mechanism and germination of Erythrina velutina seeds treated with atmospheric plasma

Physiological changes in seeds and seedlings of pumpkins submitted to salt stress

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