Alterations in osmoregulation, antioxidant enzymes and indole alkaloid levels in Catharanthus roseus exposed to water deficit

Jaleel, Cheruth Abdul; Manivannan, P.; Kishorekumar, A.; Sankar, B.; Gopi, R.; Somasundaram, R.; Panneerselvam, R.

doi:10.1016/j.colsurfb.2007.05.001

Cited by 135 publications

(83 citation statements)

References 61 publications

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“…The results of the present study confirmed the data of previous reports on Pisum sativum L. [13,19], Glycyrrhiza uralensis Fisch [14], Sorghum bicolor L. and Helianthus annuus L. under severe drought conditions [20] and Salvia officinalis L. [21], which showed a decline in the antioxidant capacity under drought. However, the data obtained in this investigation were not in agreement with the results on H. brasiliense Choisy [11] and Catharanthus roseus L. [22]. It can be concluded that water deficiency might increase antioxidants levels depending on plant genotypes; however, severe or long-term water deficiency decreased antioxidants activity.…”

Section: Discussioncontrasting

confidence: 56%

Effects of Irrigation Regimes on Antioxidant Activity and Total Phenolic Content of Thyme (Thymus vulgaris L.)

Khosh-Khui¹,

F²,

Mj³

2012

Med Aromat Plants

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Section: Discussioncontrasting

confidence: 56%

Effects of Irrigation Regimes on Antioxidant Activity and Total Phenolic Content of Thyme (Thymus vulgaris L.)

Khosh-Khui¹,

F²,

Mj³

2012

Med Aromat Plants

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“…Our results regarding free proline content are in agreement with those reported by Unyayar et al (2009) who revealed that high concentration of free proline content in sunflower leaf becomes a solute under drought stress and play its role in intercellular osmotic adjustment. The increased free proline accumulation in water stressed plants might be due to reduced protein biosynthesis (Cechin et al, 2008) and can be regarded as an important selection criterion for stress tolerance (Jaleel et al, 2007). Declined free proline dehydrogenase (proline catabolic enzyme) might be another reason of increased free proline accumulation (Sundaresan and Sudhakaran, 1995;Lee and Liu, 1999).…”

Section: Discussionmentioning

confidence: 99%

Morpho-physiological and Biochemical Responses of Camelina (Camelina sativa crantz) Genotypes under Drought Stress

Ahmed¹,

Waraich²,

Ahmad³

et al. 2017

IJAB

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To cite this paper: Ahmed, Z., E.A. Waraich, R. AbstractCamelina (Camelina sativa) a member of mustard family is being introduced as an alternate oilseed crop. Camelina is disease resistant, low input requiring crop with a short life cycle (80-100 days). The purpose of this study was to assess the response of camelina genotypes for seedling growth, gas exchange traits and some biochemical attributes under drought stress. Plants of two different camelina genotypes (7126 and 8046) were grown in pots maintained with four drought stress levels i.e., control (100% FC) and water stress (80, 60 and 40% FC). Drought stress significantly decreased shoot and root length, shoot and root fresh weight and their dry weights, photosynthetic rate (Pn), stomatal conductance (g s ), transpiration rate (E) and soluble proteins while free proline, soluble sugars and amino acid content increased in both camelina genotypes. Genotype 7126 showed better response regarding seedling traits, gas exchange traits and had higher accumulation of free proline, soluble sugars, amino acids and soluble proteins as compared to genotype 8046 at all drought stress levels. The results suggested that the drought tolerance potential of camelina is positively associated with the regulation of gas exchange characteristics and accumulation of osmoprotectants.

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“…Glutathione has been shown to regulate the expression of genes whose products are involved in redox regulation and stress tolerance enhancement ( Jaleel et al 2007l). α-Toc is the most abundant form of antioxidants in nature (Jaleel et al 2007n). α-Toc has antioxidant, cell signaling, and vitamin E functions.…”

Section: Resultsmentioning

confidence: 99%

Biochemical alterations in white yam (Dioscorea rotundata Poir.) under triazole fungicides: impacts on tuber quality .

Jaleel¹,

Gopi²,

Panneerselvam³

2008

Czech J. Food Sci.

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Jaleel C.A., Gopi R., Panneerselvam R. (2008): Biochemical alterations in white yam (Dioscorea rotundata Poir.) under triazole fungicides: impacts on tuber quality. Czech J. Food Sci., 26: 298-307.An investigation was conducted to find out the effects of two triazole fungicides (triadimefon (TDM) and hexaconazole (HEX) -15 and 10 mg/l per plant, respectively) on the biochemical constituents and tuber quality of white yam (Dioscorea rotundata Poir.). The exposure of white yam plants to the fungicides showd increased chlorophyll, carotenoids, xanthophylls, and anthocyanin contents and altered the membrane integrity in terms of electrolytic leakage and lipid peroxidation. The triazole treatments enhanced the accumulation of proline and total phenols in tubers. The visible symptoms of fungicides appeared as thickening and darkening of leaves. Both the triazoles increased the antioxidants (ascorbic acid, reduced glutathione, and tocopherol) contents. The data suggests that, apart from their fungicidal properties, the application of triazole fungicides may be a useful tool to increase the tuber quality in yam plants.

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Alterations in osmoregulation, antioxidant enzymes and indole alkaloid levels in Catharanthus roseus exposed to water deficit

Cited by 135 publications

References 61 publications

Effects of Irrigation Regimes on Antioxidant Activity and Total Phenolic Content of Thyme (Thymus vulgaris L.)

Effects of Irrigation Regimes on Antioxidant Activity and Total Phenolic Content of Thyme (Thymus vulgaris L.)

Morpho-physiological and Biochemical Responses of Camelina (Camelina sativa crantz) Genotypes under Drought Stress

Biochemical alterations in white yam (Dioscorea rotundata Poir.) under triazole fungicides: impacts on tuber quality .

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