Genotypic Variability of Peanut Lines in Response to Water Stress, Based on Biochemical Descriptors

Alves, Gerckson M.R.; Pereira, Jacqueline Wanessa de Lima; Luz, Lucas Nunes da; Lima, Liziane Maria de; Santos, Roseane Cavalcanti dos

doi:10.1590/1983-21252016v29n302rc

Cited by 6 publications

(8 citation statements)

References 22 publications

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“…The evaluation samples showed a significant difference, differing from the first experiment, according to the quadratic polynomial regression model. Development, v. 9, n. 8, e42985128, 2020 (CC BY 4.0) | ISSN 2525-3409 | DOI: http://dx.doi.org/10.33448/rsd-v9i8.5128 The results of the present study are corroborate by Alves et al (2016), who evaluated the genotypic variability of peanuts in response to water deficit based on chemical descriptors.…”

supporting

confidence: 84%

Metabolic behavior in the allocation of biomass of melon cultivars under water deficit conditions

Vieira

Carvalho

Rodrigues

et al. 2020

RSD

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Seeking to understand the mechanisms of tolerance of melon plants under water deficit, this study aimed to evaluate the biochemical behavior of melon cultivars and the allocation of biomass under water deficit. Two experiments were conducted in a shaded environment in the experimental area of the State University of Bahia, Juazeiro / BA; the first was carried out in 2015 and the second in 2016. The experimental design was in randomized blocks, replicated three times, with subdivided plots; the plots consisted of four water application rates (50, 75, 100 and 125% of the crop evapotranspiration), the subplots of two melon cultivars 'Yellow' and 'Piel de Sapo'. The sub-subplots were the sampling periods: 15; 30 and 45 days after transplantation. In the first experiment it was evaluated: total soluble sugars, reducing sugars, total proteins. In the second experiment, in addition to biochemical analyzes, the allocation of biomass of leaves, branches, roots, fruits and root / shoot ratio was evaluated. At the end of both experiments, root proline and aerial part were evaluated. Both cultivars showed similar biochemical behavior, except for the accumulation of proline obtained in the cultivar 'Piel de sapo', which allowed greater biomass allocation to the fruit than the cultivar 'Amarelo'.

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confidence: 84%

Metabolic behavior in the allocation of biomass of melon cultivars under water deficit conditions

Vieira

Carvalho

Rodrigues

et al. 2020

RSD

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“…The CAT activities of M-1 and PE19/66 reached their lowest values after the 200 mOsm drought stress treatment. Studying the CAT activity in different tree species, Alves et al (2016) and Liu et al (2010) have shown that this enzyme under drought treatment has a tendency to increase activity but under longer stress duration and higher stress intensity, decreased activity was observed.…”

Section: Resultsmentioning

confidence: 99%

Drought-induced changes in antioxidant system and osmolyte content of poplar cuttings

et al. 2020

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Poplars are widely utilized in the intensive and biomass production, as well as in breeding and environment protection programs. This experiment was performed to investigate the effect of drought stress on poplar clones (M-1, PE19/66 and B-229). Poplar clones were grown hydroponically under controlled conditions and exposed to drought stress by applying polyethylene glycol (PEG) 6000. The plant samples were collected and separated into roots and leaves. For estimation of antioxidant status, activities of different antioxidant enzymes were determined (superoxide dismutase (SOD), catalase (CAT), guaiacol peroxidase (POD), glutathione peroxidase (GPX), glutathione reductase (GR) and ascorbate peroxidase (APX)), as well as antiradical power (ARP) against hydroxyl (˙OH) radical using ESR spin-trapping. The water stress parameters proline (PRO) content, activity of proline dehydrogenase (PDH) and glycine betaine (GB) content were determined. Drought stress had significant effects on PRO and GB contents, SOD, APX and CAT activities when compared to control. All investigated extracts were determined as good inhibitors for ˙OH radical reduction, especially clone M-1where there was an increase of ARP against ˙OH radical in drought condition what could help to prevent or meliorate oxidative damage. Results indicated that the M-1 clone had a greater accumulation of substances for osmotic adjustment and a more efficient enzymatic detoxification cycle for eliminating the negative effects caused by ROS under drought stress than clones B-229 and PE19/66. This study provides valuable information for understanding drought - responsive mechanisms in leaves and roots of poplar clones M-1, B-229 and PE19/66. Key words: antioxidant enzymes, climate change, drought, glycine betaine, proline.

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“…Protein content increases do not always occur in response to water deficit and some studies have shown that, instead of protein, cells can accumulate proline. For example, an assay was performed with six peanut genotypes subjected to drought stress, in which it was found that the total soluble protein content in the leaves increased only in two genotypes, while the proline content increased in all of them (Alves et al, 2016). Similarly, in a study done on sunflowers, Kosar et al (2020) observed that the total soluble protein content decreased under water stress, while proline, glycine betaine, and the activity of antioxidant enzymes increased.…”

Section: Total Proteinsmentioning

confidence: 99%

“…This enzyme has a high affinity for H 2 O 2 , enabling the elimination of this peroxide even at low concentrations (Caverzan et al, 2012). In studies of biochemical descriptors, it was found that the increase in the activity of these enzymes may indicate a certain tolerance of species, strains, or cultivars to abiotic stress, which may serve as a basis for studies with markers to indicate tolerance to stresses (Barbosa et al, 2014;Alves et al, 2016). For example, Pereira et al (2012) observed that the expressive response of CAT in droughttolerant peanut genotypes is evidence of its adoption as a biochemical descriptor in studies on the selection of genotypes for tolerance to water stress.…”

Section: Introductionmentioning

confidence: 99%

Biochemical changes in black oat plants in response to water deficit under different temperatures

Sartori¹,

Oliveira²,

Zucareli³

2021

Semina: Ciênc. Agrár.

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The black oat (Avena strigosa Schreb.) stands out as a forage of great importance in Brazilian agriculture. However, the productivity and quality of this forage can be affected by abiotic factors, such as temperature and water availability, which affect the physiological processes and facilitate the accumulation of free radicals (reactive oxygen species - ROS). Thus, the objective of this study was to understand the biochemical changes in black oat plants subjected to water deficit at different temperatures. Experiments were conducted in a greenhouse in two experimental periods, which presented an average temperature of 20 °C and 24 °C, respectively. Black oat seeds, of the variety IAPAR 61, were sown in pots and the plants were irrigated for 60 days. After which, the pots were covered with plastic bags and the irrigation was suspended. The analyses were carried out in five periods of evaluation - M1: plants before the suspension of irrigation, M2: plants at the first wilting point, M3: three days after plastic removal and irrigation return, M4: four days after M3 and before the second suspension of irrigation, and M5: the second wilting point. The levels of total protein and malondialdehyde (MDA), and the activity of the enzymes catalase (CAT) and ascorbate peroxidase (APX), were analyzed. The experimental design was completely randomized, with six replications, in a factorial scheme of average temperature × water management × periods of evaluation, and the means were compared by Tukey’s test at 5%. In response to water deficiency and temperature increase, black oat plants increased their levels of total soluble proteins, and there was greater lipid peroxidation due to the increase in malondialdehyde content. There was no change in the activity of the enzymes catalase and ascorbate peroxidase under water deficit, and these activities decreased with increasing temperature.

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Genotypic Variability of Peanut Lines in Response to Water Stress, Based on Biochemical Descriptors

Cited by 6 publications

References 22 publications

Metabolic behavior in the allocation of biomass of melon cultivars under water deficit conditions

Metabolic behavior in the allocation of biomass of melon cultivars under water deficit conditions

Drought-induced changes in antioxidant system and osmolyte content of poplar cuttings

Biochemical changes in black oat plants in response to water deficit under different temperatures

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