Studies on germination, seedling vigour, lipid peroxidation and proline metabolism in Catharanthus roseus seedlings under salt stress

By C. A. Jaleel, R. Gopi, B. Sankar, P. Manivannan, A. Kishorekumar, R. Sridharan, R. Panneerselvam. 2007

348 citations recorded by the source corpus.

Abstract In the present investigation, ‘rosea’ and ‘alba’ varieties of Catharanthus roseus (L.) G. Don. seeds were grown with different concentrations (15, 30, 45 and 60 mM) of sodium chloride (NaCl), in order to study the effects of salinity on germination behaviour, seedling vigour (root and shoot length), lipid peroxidation (LPO) and proline metabolism. It was found that germination was delayed at lower salinity levels and inhibited at higher salinity regimes. NaCl treatment caused a serious decrease in the early seedling growth by means of reduced seedling vigour at higher salinity levels. The LPO was estimated as thiobarbituric acid reactive substances (TBARS) and found increased under salt stress. Glycine betaine (GB) and proline (PRO) contents significantly accumulated in both the varieties of seedlings under salt stress. Under NaCl stress, the activity of proline oxidase (PROX) decreased and the γ-glutamyl kinase (γ-GK) activity increased.

Subfields: Plant Science

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Citations in the corpus

Soil Salinity Alters Growth, Chlorophyll Content, and Secondary Metabolite Accumulation in Catharanthus roseus (2008, background): “Moreover, it is important to use a quick and reliable index of salt tolerance that will enable the screening of varieties (9,12).”
Photosynthesis and photosystem 2 efficiency of two salt-adapted halophytic seashore Cakile maritima ecotypes (2008, background): “Salt also affects contents of chlorophyll (Chls) and carotenoids (Car), and reduces efficiency of ribulose-1,5-bisphosphate carboxylase/oxygenase for carbon fixation (Delfine et al. 1998, Lee et al. 2004, Jaleel et al. 2007a).”
The effect of salt stress on antioxidative enzymes and proline content of two Turkish tobacco varieties (2012, background): “Oxidative damage to tissue lipids was estimated in this study by measuring MDA content (32).”
DIFFERENTIAL ACCUMULATIONS OF PROLINE AND FLAVONOIDS IN INDICA RICE VARIETIES AGAINST SALINITY (2009, background): “This stress can induce production of reactive oxygen species (ROSs) (Jaleel et al., 2007; Ashraf, 2009).”
Drought-induced biochemical modifications and proline metabolism in Abelmoschus esculentus (L.) Moench. (2007, background): “Increased proline accumulation was reported in water-stressed sorghum (YADAV et al. 2005), bell pepper (NATH et al. 2005), Gossypium hirsutum (RONDE et al. 1999), wheat (HAMADA 2000) and in salt-stressed Catharanthus roseus (JALEEL et al. 2007).”
Arbuscular mycorrhizal fungi enhances salinity tolerance of Panicum turgidum Forssk by altering photosynthetic and antioxidant pathways (2015, background): “Altered activities of proline synthesizing and proline degrading enzymes under salt-stress conditions has been observed by Ahmad et al. (2010) and Jaleel et al. (2007).”
Growth and antioxidant responses in mustard (Brassica juncea L.) plants subjected to combined effect of gibberellic acid and salinity (2010, background): “The activity of SOD enzymes have been reported in Catharanthus roseus (Jaleel et al. 2007), in Cassia angustifolia (Agarwal and Pandey 2004) and Pisum sativum (Ahmad et al.”
Salt-induced changes in photosynthetic activity and oxidative defense system of three cultivars of mustard (Brassica juncea L.) (2012, neutral): “, (2009), Catharanthus roseus (Jaleel et al., 2007) and P.”
Effect of drought stress on yield, proline and chlorophyll contents in three chickpea cultivars (2010, neutral): “Jaleel et al., 2007).”
Potassium starvation-induced oxidative stress and antioxidant defense responses in Brassica juncea (2014, background): “Proline oxidase catalyzes the conversion of proline to glutamate and g-glutamyl kinase plays an important role in the synthesis of proline in plants (Jaleel et al. 2007).”
Antioxidant defense system, lipid peroxidation, proline-metabolizing enzymes, and biochemical activities in two Morus alba genotypes subjected to NaCl stress (2010, background): “A decrease in PROX activity and increased γ GK activ ity might be the reason for higher proline accumula tion under abiotic stress [22].”