Enhancement of Peroxidase, Polyphenol Oxidase and Superoxide Dismutase Activities by Triadimefon in NaCl Stressed Raphanus Sativus L.

Muthukumarasamy, M.; Gupta, Sushmita; Panneerselvam, R.

doi:10.1023/a:1002741302485

Cited by 93 publications

(28 citation statements)

References 17 publications

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“…Taking into account the recently reconsidered role of phenolics in oxidative stress tolerance (Sgherri, Stevanovic & Navari‐Izzo, 2004), our results suggest that Jerba plants have a higher capacity for scavenging the ROS generated by salt stress. Muthukumarasamy, Gupta & Pannerselvam (2000) also reported that an increase in polyphenol in the tissues ameliorates the ionic effect of NaCl. Thus, the enhanced level of polyphenols in C. maritima from Jerba may be an adaptive trait, as also reported in A. corniculatum (Parida et al.…”

Section: Discussionmentioning

confidence: 92%

Physiological and biochemical traits involved in the genotypic variability to salt tolerance of Tunisian Cakile maritima

Megdiche

Nader

Debez

et al. 2009

African Journal of Ecology

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Cakile maritima (family: Brassicaceae) was collected from three provenances belonging to different bioclimatic stages (humid, semi arid and arid) in Tunisia to study their eco‐physiological and biochemical responses to salinity. Seedlings were cultivated on inert sand for 20 days under NaCl treatments (0, 100, 200, 400 mm NaCl). Plant response to salinity was provenance‐ and salt‐dependent. At 100 mm NaCl, growth parameters (leaf biomass, area, number per plant and relative growth rate) were improved in plants from Jerba (originating from arid bioclimatic stage) compared with the control, while growth was reduced in those from Tabarka (from humid area). High salt levels (400 mm NaCl) decreased the plant growth in the three provenances, but plants in Tabarka were the most salt sensitive. The relative salt tolerance of plants from Jerba and Bekalta provenances was associated with low levels of malondialdehyde as well as of electrolyte leakage and endoproteolytic activity. Salt reduced leaf hydration, the decrease in water content being dose‐dependent and more pronounced in Tabarka. Increase in salinity led to significant increase in leaf succulence and decrease in leaf water potential, especially in Jerba plants. The plants from the latter displayed the highest leaf levels of Na+ and Cl−, proline, soluble carbohydrates, soluble proteins, and polyphenols. Overall, the higher salt tolerance of plants from Jerba provenance, and to a lower extent of those from Bekalta, may be partly related to their better capacity for osmotic adjustment and to limit oxidative damage when salt‐challenged.

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Section: Discussionmentioning

confidence: 92%

Physiological and biochemical traits involved in the genotypic variability to salt tolerance of Tunisian Cakile maritima

Megdiche

Nader

Debez

et al. 2009

African Journal of Ecology

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“…According to Prochazkova et al(2001), many stress situations caused an increase in the total antioxidant activity. 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: 98%

“…Muthukumarasamy et al(2000) showed that a reduction in POX activity in radish. We observed an increase in CAT activity in C. roseus seedlings subjected to Azotobacter and Azospirillum treatments.…”

Section: Resultsmentioning

confidence: 99%

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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“…Increase in polyphenol content in different tissues under increasing salinity has been observed in other species such as mulberry (Agastian et al . 2000), Raphanus sativus (Muthukumarasamy et al . 2000) and pepper (Navarro et al .…”

Section: Resultsmentioning

confidence: 99%

Salinity Effects on Growth, Essential Oil Yield and Composition and Phenolic Compounds Content of Marjoram (Origanum Majorana L.) Leaves

Jelali¹,

Dhifi²,

Chahed³

et al. 2011

Journal of Food Biochemistry

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The effect of irrigation with different NaCl levels (0.9, 5 and 10 ds/m) on growth, essential oil yield and composition, in addition to polyphenol content of Tunisian marjoram (Origanum majorana L.) leaves was investigated. Plant growth and chlorophyll content were significantly decreased with increasing NaCl levels. The essential oil yield increased significantly up to 55.5% with 5 ds/m NaCl and decreased significantly at high salinity. Terpinene-4-ol, g-terpinene, cis-sabinene-hydrate and a-terpineol were found as the main volatile compound of marjoram leaf essential oil. Further, salinity effect was highly significant for the content of these compounds and depending on the treatment level. The most represented class was monoterpene alcohols (870.6 mg/g dry weight [DW]) represented by terpinene-4-ol (555.1 mg/g DW) and remains the major one at different salt levels, followed by monoterpene hydrocarbons (335.54 mg/g DW). Moreover, salinity affected differently phenolic compounds content of marjoram leaves. PRACTICAL APPLICATIONSThis work was carried out as a first step for a chemical and biological activity of Tunisian Origanum majorana through phenolic and essential oil composition. A further identification, isolation and purification of O. majorana phenolics and volatiles will be associated to an application in food industry as antioxydants, additives for food preservation and for enhancing their nutritional value and organoleptic quality. This study could be continued by the investigation of the antimicrobial activity of O. majorana bioactive compounds with the purpose of an eventual use to prevent growth of many foodborne and food spoilage microorganisms in foods. Furthermore, a pharmacological study could be established through in vivo assays in order to discover new anticarcenogenic, antinflammatory, antimutagenic and other activities of O. majorana. Such results could be used in pharmaceutical formulations leading to new human drugs from this medicinal plant.

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Enhancement of Peroxidase, Polyphenol Oxidase and Superoxide Dismutase Activities by Triadimefon in NaCl Stressed Raphanus Sativus L.

Cited by 93 publications

References 17 publications

Physiological and biochemical traits involved in the genotypic variability to salt tolerance of Tunisian Cakile maritima

Physiological and biochemical traits involved in the genotypic variability to salt tolerance of Tunisian Cakile maritima

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

Salinity Effects on Growth, Essential Oil Yield and Composition and Phenolic Compounds Content of Marjoram (Origanum Majorana L.) Leaves

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