Effect of salinity and different nitrogen sources on the activity of antioxidant enzymes and indole alkaloid content in Catharanthus roseus seedlings

Misra, Neeraj; Gupta, Ajay Kumar

doi:10.1016/j.jplph.2005.02.011

Cited by 173 publications

(90 citation statements)

References 41 publications

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“…According to previous reports, they can easily convert superoxide anion radicals into O -2 and H 2 O 2 , and its activity could also increase by factors such as low temperature, water stress and accumulation of heavy metals (Misra and Gupta, 2006;Chung et al, 2006;Feng et al, 2008). In this study, SOD and POD activities were initially increased and later, they were decreased with the increasing stress time (Figures 4 and 5).…”

Section: Discussionsupporting

confidence: 75%

Effects of low temperature and drought on the physiological and growth changes in oil palm seedlings

Cao¹,

Sun²,

Shao³

et al. 2011

Afr. J. Biotechnol.

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Water deficiency and low temperature are two important ecological factors which affect the distribution and cultivation of oil palm. To find out how oil palm adapts to the environmental conditions, the dynamics of a series of important physiological components derived from the leaves of potted oil palm seedlings under drought stress (DS) (water with holding) and low temperature stress (LTS) (10°C) were studied. The results showed that low temperature and water stress inhibited the growth of oil palm seedlings. The relative conductivity, injury index, malondialdehyde (MDA) and proline content in the leaves increased to different degrees with the extension of low temperature and drought stress. Superoxide dismutase (SOD) and peroxidase (POD) activities increased and then decreased gradually with the duration of treatment time. The variations of the earlier mentioned parameters except proline content under low temperature stress were greater than that under drought stress. Thus, oil palm possibly showed different response mechanisms under low temperature and drought stress by mediations of these substances, in order to increase plant defense capability. These data provided the information that was utilized to initiate the breeding programme used to improve drought and cold tolerance in oil palm.

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Section: Discussionsupporting

confidence: 75%

Effects of low temperature and drought on the physiological and growth changes in oil palm seedlings

Cao¹,

Sun²,

Shao³

et al. 2011

Afr. J. Biotechnol.

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“…Oxidative damage, caused by ROS, interrupts the lipid metabolism (Hernandez and Almansa, 2002;Misra and Gupta, 2006). The fi nal product of lipid peroxidation, malondialdehyde (MDA), is poisonous to plant cells.…”

Section: Resultsmentioning

confidence: 99%

Progesterone and β-Estradiol Stimulate Seed Germination in Chickpea by Causing Important Changes in Biochemical Parameters

Erdal

Dumlupınar

2010

Zeitschrift Für Naturforschung C

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Effects of progesterone and β-estradiol on morphologic (germination velocity, root and shoot length) and biochemical (activities of α-amylase, superoxide dismutase, peroxidase and catalase, H2O2 content, lipid peroxidation) parameters during germination and post-germination stages of chickpea seeds were studied. The seeds germinated at various hormone concentrations (10 - 4, 10 - 6, 10 - 9, 10 - 12, 10 - 15 M) were harvested at the end of the 1st, 3rd, and 5th day. With comparison to the control, these hormones caused an increment in the number of germinating seeds at the end of days 1 and 3 by accelerating the seed germination. Root and shoot lengths were augmented by both hormones at all hormone concentrations tested. The highest elongation was recorded in 10 - 6 M progesterone and 10 - 9 - 10 - 12 M β-estradiol. Similarly, activities of α-amylase and superoxide dismutase were increased by all concentrations of both hormones, and maximum increases were obtained with 10 - 6 M progesterone and 10- 9-10- 12 M β-estradiol. In the case of superoxide dismutase activity, not only the H2O2 content but also the peroxidase and catalase activities increased. Lipid peroxidation decreased depending on an increase in the antioxidant enzyme activities. In the present study, it was demonstrated that progesterone and β-estradiol even at low concentrations increase the germination velocity and resistance to stress conditions by changing the activities of some biochemical pathways.

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“…Interestingly, we found the increased levels of POD were closely associated with accumulation of TIAs, including VIN, VBL and CAT under the early drought stress. Previous reports showed that the abiotic stresses can increase the alkaloid content in plants by treatment of salinity, various chemicals and bioregulators (Zhao et al 2001;Karadge & Gaikwad 2003;Misra & Gupta 2006).…”

Section: Discussionmentioning

confidence: 99%

Effects of PEG-induced drought stress on regulation of indole alkaloid biosynthesis in Catharanthus roseus

Liu

Meng

Xi-Hua

et al. 2017

Journal of Plant Interactions

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Catharanthus roseus (C. roseus) plants were used to investigate the terpenoid indole alkaloids (TIAs) accumulation under the condition of PEG-induced drought stress. Multivariate analysis showed that 35% PEG6000 could induce more obvious and stable accumulation on proline (PRO) content and the relative water content (RWC). The results indicated that there were gradual increase and then decrease (p < .05) in the contents of vindoline (VIN) and catharanthine (CAT) under 35% PEG6000 stress, but the content of vinblastine (VBL) increased gradually. In addition, the expression levels of tryptophan decarboxylase (TDC), strictosidine synthase (STR) and deacetylvindoline-4-Oacetyltransferase (DAT) were upregulated in plants under 35% PEG6000 stress. Further correlation analysis indicated that CAT accumulation was significantly correlated with TDC gene expression, and VBL accumulation was significantly correlated with peroxidase (p < .05). Our results suggest that the cultivation of C. roseus in drought stress would serve as effective treatment for accumulating TIAs. ARTICLE HISTORY

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Effect of salinity and different nitrogen sources on the activity of antioxidant enzymes and indole alkaloid content in Catharanthus roseus seedlings

Cited by 173 publications

References 41 publications

Effects of low temperature and drought on the physiological and growth changes in oil palm seedlings

Effects of low temperature and drought on the physiological and growth changes in oil palm seedlings

Progesterone and β-Estradiol Stimulate Seed Germination in Chickpea by Causing Important Changes in Biochemical Parameters

Effects of PEG-induced drought stress on regulation of indole alkaloid biosynthesis in Catharanthus roseus

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