Water deficit stress effects on reactive oxygen metabolism in Catharanthus roseus; impacts on ajmalicine accumulation

Jaleel, Cheruth Abdul; Sankar, B.; Murali, P.V.; Gomathinayagam, M.; Lakshmanan, Ganapathy Murugan Alagu; Panneerselvam, R.

doi:10.1016/j.colsurfb.2007.09.026

Cited by 120 publications

(78 citation statements)

References 46 publications

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“…Shao et al [94] reported that CAT is the principal enzyme that scavenges H2O2 in cells. The high activity of CAT in the present study is similar with the results of drought tolerance in Catharanthusroseus [95], alfalfa [96], peanut [97] and canola cultivars [98]. The combined action of CAT and SOD also converts the toxic O2 •− into H2O2 then into water and molecular oxygen, averting the cellular damage under water stress condition [72].…”

Section: Antioxidant Enzymessupporting

confidence: 75%

Sodium silicate mediated response of antioxidative defense system in <em>Lycopersicon esculentum</em> mill. under water stress

Malhotra

Kapoor

Ganjewala

et al. 2017

ijpm

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A b s t r a c tThe present study was designed to study the effect of water stress on Lycopersicon esculentum Mill. and role of sodium silicate in the protection of tomato plants under water deficit condition. Different biochemical parameters such as photosynthetic pigments, protein, sugar, MDA content, proline, nitrate reductase activity and activities of antioxidant enzymes (SOD, CAT, APX and POX) were examined in tomato leaves at 40 and 60 DAS by the standard methods. The lycopene and β-carotene contents in tomato fruits were also analyzed at 60, 65 and 70 DAS. Water stress significantly decreased relative water content (RWC), pigment content, sugar and protein contents in tomato leaves at 60 DAS but the accumulation of proline was stimulated in tomato leaves under water deficit condition. The activities of antioxidant enzymes such as SOD, CAT, APX and POX were significantly increased under (3d and 6d) water stress condition at 60 DAS. This study offers first hand information on the water stress-induced oxidative stress in Lycopersicon esculentum and development of antioxidative defense system against drought. The results obtained clearly indicated the positive impact of sodium silicate in protection of tomato plants under water deficit condition.

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Section: Antioxidant Enzymessupporting

confidence: 75%

Sodium silicate mediated response of antioxidative defense system in <em>Lycopersicon esculentum</em> mill. under water stress

Malhotra

Kapoor

Ganjewala

et al. 2017

ijpm

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“…In addition, they can also protect plants against various environmental stresses. Triazoles affect the isoprenoid pathway and alter the levels of certain plant hormones by inhibiting gibberellin synthesis, reducing ethylene evolution, and increasing cytokinin levels (Jaleel et al 2008). Plant growth regulators play vital roles in coordination of many growth and behavioral processes in rice, which regulates the amount, type, and direction of plant growth (Anjum et al 2011).…”

Section: Introductionmentioning

confidence: 99%

The effect of triazole induced photosynthetic pigments and biochemical constituents of Zea mays L. (Maize) under drought stress

2015

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In this investigation, pot culture experiment was carried out to estimate the ameliorating effect of triazole compounds, namely Triadimefon (TDM), Tebuconazole (TBZ), and Propiconazole (PCZ) on drought stress, photosynthetic pigments, and biochemical constituents of Zea mays L. (Maize). From 30 days after sowing (DAS), the plants were subjected to 4 days interval drought (DID) stress and drought with TDM at 15 mg l -1 , TBZ at 10 mg l -1 , and PCZ at 15 mg l -1 . Irrigation at 1-day interval was kept as control. Irrigation performed on alternative day. The plant samples were collected on 40, 50, and 60 DAS and separated into root, stem, and leaf for estimating the photosynthetic pigments and biochemical constituents. Drought and drought with triazole compounds treatment increased the biochemical glycine betaine content, whereas the protein and the pigments contents chlorophyll-a, chlorophyll-b, total chlorophyll, carotenoid, and anthocyanin decreased when compared to control. The triazole treatment mitigated the adverse effects of drought stress by increasing the biochemical potentials and paved the way to overcome drought stress in corn plant.

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“…Liu et al (2011) clarified that the greatest accumulation of metabolites is attributed to the closure of plant stomata in the prolonged drought period. The effect of water stress can be observed in other studies, such as that of Jaleel (2008), where Catharanthus roseus L. produced more ajmalicine under stress conditions. Valentini et al (2010b) studied S. guianensis in Minas Gerais, Brazil and found that in the dry season, the production of the essential oil reached 0.61%, whereas in the rainy season, it was about 0.10% (w/w).…”

Section: Resultsmentioning

confidence: 56%

Influence of seasonality on the yield and composition of the essential oil of Siparuna guianensis Aublet

Ferreira¹,

Kuckelhaus²,

Tschoeke³

et al. 2017

Afr. J. Biotechnol.

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The plant Siparuna guianensis is used in traditional medicine and has been the target of studies on the development of new drugs for the control of pests and vector insects. The present study was aimed to evaluate the seasonal influence on the content and composition of the essential oil of S. guianensis. The experiment was conducted for 12 months evaluating the yield of the essential oil of leaves throughout the seasons (autumn, winter, spring and summer). The chemical composition of the essential oil was obtained by gas chromatography-mass spectrometry (GC-MS). The highest oil yield was in autumn and winter, comprising 0.33 and 0.29% (w/w), respectively. The major compound identified was β-myrcene (48.59-24.2%), followed by epicurzerenone (27.24-13.7%) being the most abundant; germacrene D showed lower values of 9.93% in autumn and 13.5-14.34% in the other seasons, besides curzerene that had no production in autumn. The ɣ-elemene component had a higher production of 7.29% in autumn. Compound 2-undecanone did not show significant seasonal changes, with percentages being between 7.26 and 5.43%. The monoterpenes and sesquiterpenes showed similar levels in autumn; however, in the other seasons (winter, spring, and summer), the sesquiterpenes presented higher concentration, reaching 68.54% in summer. The components identified in the essential oil of S. guianensis exhibit interesting biological activities, making this essential oil a promising compound for the development of new biodegradable drugs, repellents, and insecticides. The knowledge about the yield and seasonal composition is fundamental to optimize and maximize the obtainment of compounds of interest for the production of new drugs.

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Water deficit stress effects on reactive oxygen metabolism in Catharanthus roseus; impacts on ajmalicine accumulation

Cited by 120 publications

References 46 publications

Sodium silicate mediated response of antioxidative defense system in <em>Lycopersicon esculentum</em> mill. under water stress

Sodium silicate mediated response of antioxidative defense system in <em>Lycopersicon esculentum</em> mill. under water stress

The effect of triazole induced photosynthetic pigments and biochemical constituents of Zea mays L. (Maize) under drought stress

Influence of seasonality on the yield and composition of the essential oil of Siparuna guianensis Aublet

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