Antioxidative responses of Calendula officinalis under salinity conditions

Chaparzadeh, Nader; D'Amico, M. L.; Khavari-Nejad, R. A.; Izzo, Riccardo; Navari-Izzo, F.

doi:10.1016/j.plaphy.2004.07.001

Cited by 245 publications

(177 citation statements)

References 37 publications

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“…This result coincides with the observation in rice leaves under NaCl treatments (Lin and Kao, 2000). The changes in CAT may vary according to the intensity of stress, time of assay after the stress and induction of new isozyme(s) (Chaparzadeh et al, 2004). The level of antioxidative response depends on the species, the development and the metabolic state of the plant, as well as the duration and intensity of the stress (Reddy et al, 2004).…”

Section: Resultssupporting

confidence: 87%

“…The SOD activity showed an increase and in some, a reduction under abiotic stresses (Muthukumarasamy et al, 2000;Sairam et al, 2002). The changes in SOD activity under Azotobacter and Azospirillum treatments can be also a consequence of an altered synthesis and accumulation of less active enzymes and/or of a higher turnover of SODs (Chaparzadeh et al, 2004).…”

Section: Resultsmentioning

confidence: 94%

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Alterations in seedling vigour and antioxidant enzyme activities in Catharanthus roseus under seed priming with native diazotrophs

Karthikeyan

Jaleel

Gopi

et al. 2007

J. Zhejiang Univ. - Sci. B

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An experiment was conducted on Catharanthus roseus to study the effect of seed treatments with native diazotrophs on its seedling growth and antioxidant enzyme activities. The treatments had significant influence on various seedling parameters. There is no significant influence on dry matter production with the diazotrophs, Azospirillum and Azotobacter. However, the vital seedling parameters such as germination percentage and vigour index were improved. Azotobacter treatment influenced maximum of 50% germination, whereas Azospirillum and Azotobacter were on par with C. roseus with respect to their vigour index. There was significant difference in the population of total diazotrophs. Azospirillum and Azotobacter between rhizosphere and non-rhizosphere soils of C. roseus had the same trend and were observed at various locations of the study. The activities of antioxidant enzymes such as superoxide dismutase (SOD), peroxidase (POX) and catalase (CAT) were increased to a significant extent due to the treatment with diazotrophs.

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Section: Resultssupporting

confidence: 87%

Section: Resultsmentioning

confidence: 94%

Alterations in seedling vigour and antioxidant enzyme activities in Catharanthus roseus under seed priming with native diazotrophs

Karthikeyan

Jaleel

Gopi

et al. 2007

J. Zhejiang Univ. - Sci. B

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“…Similar to our findings, increased CAT activity in Cassia angustifolia L. (Agarwal and Pandey 2004), maize (Azevedo Neto et al 2006) and Sesamum indicum (Koca et al 2007) differing in salt tolerance were found. The changes in CAT activity may depend on the species, the development and metabolic state of the plant, as well as on the duration and intensity of the stress (Chaparzadeh et al 2004). This study lends further support to those findings.…”

Section: Resultsmentioning

confidence: 99%

Effects of salt stress on growth, antioxidant enzyme and phenylalanine ammonia-lyase activities in Jatropha curcas L. seedlings

Gao¹,

Chen²,

Wang³

et al. 2008

Plant Soil Environ.

154

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The effects of increasing NaCl concentrations on biomass, superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and phenylalanine ammonia-lyase (PAL) in Jatropha curcas L. seedlings were investigated. The fresh weights of cotyledons and radicles with increasing NaCl concentrations decreased progressively, and the fresh weight of hypocotyls reached the lowest level at NaCl concentration of 150 mmol and then increased. SOD activity in the cotyledons, hypocotyls and radicles increased gradually up to NaCl concentrations of 150, 200 and 150 mmol, respectively. The highest POD activities in the cotyledons, hypocotyls and radicles were observed at NaCl concentrations of 150, 200 and 150 mmol, respectively. CAT activity in the cotyledons, hypocotyls and radicles enhanced gradually up to 100, 200 and 150 mmol NaCl concentrations, respectively. Increased PAL activity in the hypocotyls and radicles was linearly and positively correlated with increasing NaCl concentrations, but the peak activity in the cotyledons was observed at NaCl concentration of 150 mmol. Electrophoresis analysis suggested that different patterns in SOD and POD isoenzymes depend on NaCl concentrations and organ type, and the staining intensities of these isoforms are consistent with the changes of enzyme activity assayed in solutions.

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“…The variation of constitutive activities of POD and PPO is related to genotype differences. Plant PPOs catalyze the reduction of H 2 O 2 to H 2 O and O 2 and thus help plants minimize the negative effects of oxidative damage (Chaparzadeh et al 2004). Indeed, POD enzyme plays a key role to prevent oxidative damage and to maintain cell membrane integrity in decreasing H 2 O 2 content and eliminating MDA.…”

Section: Discussionmentioning

confidence: 99%

Physiological and biochemical traits of drought tolerance inArgania spinosa

Chakhchar

Wahbi

Lamaoui

et al. 2015

Journal of Plant Interactions

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The objective of this study was to understand and characterize the physiological and biochemical tolerance mechanisms of Argania spinosa under drought stress for selection tolerant ecotypes. Significant differences were observed among ecotypes in indices of leaf water status studied: stomatal conductance (g s ), predawn leaf water potential (Ψ pd ) and leaf relative water content. There was a significant decrease in these physiological traits with increasing degree of drought stress in all ecotypes. Drought stress significantly increased endogenous H 2 O 2 and lipid peroxidation. Moderate and severe drought stress increased significantly the catalase, superoxide dismutase, peroxidase, polyphenoloxidase and lipoxygenase activities, depending on time. Their constitutive activities were higher in inland ecotypes than in coastal ecotypes. According to canonical discriminant analysis, the inland ecotypes were essentially distinguished from the coastal ecotypes by the following physiological and biochemical traits: Ψ pd , g s , polyphenol oxidase, superoxide dismutase and malonyldialdehyde. Inland ecotypes seem to be more tolerant to drought stress than coastal ecotypes.

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Antioxidative responses of Calendula officinalis under salinity conditions

Cited by 245 publications

References 37 publications

Alterations in seedling vigour and antioxidant enzyme activities in Catharanthus roseus under seed priming with native diazotrophs

Alterations in seedling vigour and antioxidant enzyme activities in Catharanthus roseus under seed priming with native diazotrophs

Effects of salt stress on growth, antioxidant enzyme and phenylalanine ammonia-lyase activities in Jatropha curcas L. seedlings

Physiological and biochemical traits of drought tolerance inArgania spinosa

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