Photosynthesis and activity of superoxide dismutase, peroxidase and glutathione reductase in cotton under salt stress

Meloni, Diego Ariel; Oliva, Marco Antônio; Martínez, Carlos A.; Cambraia, José

doi:10.1016/s0098-8472(02)00058-8

Cited by 990 publications

(625 citation statements)

References 31 publications

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“…Salinity is known to impair seed germination, delay plant growth and reduces crop yield (Greenway and Munns 1980). It affects the physiology and biochemistry of plants, reduces photosynthesis, protein synthesis and respiration in sensitive crops (Meloni et al 2003;Pal et al 2004). Salt induces osmotic stress by preventing absorption of water from soil and the result is the increase of the concentration of the potentially toxic salt ions within plant cells.…”

Section: Study Site and Plant Materialsmentioning

confidence: 99%

Genotypic variation in tolerance to salinity of common beans cultivated in Western Cameroon as assessed at germination and during early seedling growth

et al. 2017

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Open Agriculture. 2017; 2: 600-610 bean genotypes and most of their interactions. Significant correlations were found between all germination variables and between most growth parameters. From the effect of salt application, the common bean genotypes namely KEB-CB049, KEB-CB053 and Mac-33 were the most tolerant while KEB-CB055 and KEB-CB050 were the most sensitive. The results confirm that there is genotypic variation in salinity tolerance and that the most tolerant genotypes should be further explored in selection programs, with the aim that they should be promoted for cultivation in tropical zones affected by salinity.

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Section: Study Site and Plant Materialsmentioning

confidence: 99%

Genotypic variation in tolerance to salinity of common beans cultivated in Western Cameroon as assessed at germination and during early seedling growth

et al. 2017

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“…ROS can seriously disrupt normal metabolism through oxidative damage to lipids, protein, and nucleic acids (Meloni et al 2003) and damage membrane function (Gómez et al 2004). Plants can regulate the ROS by scavenging them with antioxidant enzymes such as superoxide dismutase (SOD), catalase (CAT), and peroxidases (Bano et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Superoxide dismutase isozyme activity and antioxidant responses of hydroponically cultured Lepidium sativum L. to NaCl stress

Manaa

Mimouni

Terras

et al. 2013

Journal of Plant Interactions

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The present study was focused to assess the physiological behavior and antioxidant responses of the medicinal plant Lepidium sativum L. (commonly called Garden cress) subjected hydroponically to NaCl stress during its vegetative growth stage. The results showed that the addition of NaCl to growth medium significantly reduced plant growth. The magnitude of the response was also linked to the plant organ considered and NaCl concentration supplemented to the medium. Tissue hydration seemed unaffected by salinity. Reduction in dry weight (DW) production was associated with a high accumulation of Na + and Cl − and a significant reduction of K + content in shoots. The accumulation of osmoregulatory compounds (proline and total sugars) in shoots and roots was greatly increased by NaCl. Activity staining of antioxidants after a native polyacrylamide gel electrophores (PAGE) showed four superoxide dismutase (SOD) isozymes in the extract of leaf-soluble proteins (one Mn-SOD, two Fe-SODs, and one CuZn-SOD), and three isoforms in roots (Mn-SOD, Fe-SOD, and CuZn-SOD). Four peroxidase (POD) isozymes in the roots and only one isozyme in the leaves were detected. The work demonstrated that activities of antioxidant defense enzymes changed in parallel with the increased salinity. In summary, these findings proved that L. sativum can be classified as a moderately tolerant plant to salinity.

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“…cotton [22], linseed [23], bean [24], maize [25] tetraploid wheat [26], pea [27], alfalfa [28] and sorghum [29]. Munns and Tester [19] reported that the salinity reduces the ability of plants to uptake water which subsequently leads to a reduction in growth rate along with a chain of metabolic changes.…”

Section: Resultsmentioning

confidence: 99%

“…SOD is one of the most important antioxidant enzymes and is the first line of cellular defense against the oxidative stress [25,32]. SOD plays an important role in modulating the relative amount of O2• -and H 2 O 2 in plants and hence, performs a key role in the defense mechanism against ROS toxicity [22].…”

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confidence: 99%

Physiological and biochemical characterization of Sesamum germplasms tolerant to NaCl

2016

J App Biol Biotech

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Sesamum indicum L. (family-Pedaliaceae) is an economically important oil seed crop grown in tropical and subtropical countries. It is widely used in food, nutraceutical, pharmaceutical industries. Salinity is considered as the most important abiotic stress limiting to crop production. In this context, the present study was to evaluate the Sesamum genotypes for salinity tolerance. Germinated seedlings (15-d-old) were used to screen the germplsm at different concentrations (0, 25mM, 50mM, 75mM, 100mM) of NaCl and observation was taken after 15 th , 30 th and 45 th days of treatment. Ion content (Na + , Cl -, Ca ++ , Mg ++ and K ++ ) were measured after 15 days of treatment. Fresh and dry weight was less in salt sensitive genotypes than tolerant genotypes. During increase of salinity concentration, all the genotypes had a negative impact on roots. The seedlings showed reduced growth and displayed variation in ion uptake thus accumulating Na + and Cl -in the roots. At higher concentration of salt treatment showed the more dry weight and displayed more effective ion regulation by manipulating low Na + /K + and Na + /Ca ++ ratio. The tolerant genotypes exhibited the lowest shoot Na + content under salinity conditions. Higher proline accumulation was observed at 100 mM after 15 days of NaCl treatments in 'KM-13' genotype. After 15 days of treatment, the genotype 'ES 2138-2' showed maximum proline accumulation. The total carbohydrates contents increased in all the ten genotypes in presence of NaCl. Highest carbohydrate content was found in genotype 'SI-1926' grown in 100 mM NaCl. Enzyme activities are variable in different genotypes with different concentration of NaCl. This study will help in Sesamum improvement programme.

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Photosynthesis and activity of superoxide dismutase, peroxidase and glutathione reductase in cotton under salt stress

Cited by 990 publications

References 31 publications

Genotypic variation in tolerance to salinity of common beans cultivated in Western Cameroon as assessed at germination and during early seedling growth

Genotypic variation in tolerance to salinity of common beans cultivated in Western Cameroon as assessed at germination and during early seedling growth

Superoxide dismutase isozyme activity and antioxidant responses of hydroponically cultured Lepidium sativum L. to NaCl stress

Physiological and biochemical characterization of Sesamum germplasms tolerant to NaCl

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