Putrescine alleviation of growth in salt stressed Brassica juncea by inducing antioxidative defense system

Verma, Sarita; Mishra, Saurabh

doi:10.1016/j.jplph.2004.08.008

Cited by 343 publications

(221 citation statements)

References 41 publications

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“…In this study also, putrescine at 0.5 mM concentration was effective in bringing down the MDA levels and electrolyte leakage to control values. Polyamine's general nature to reduce membrane leakage and lipid peroxidation has been reported earlier also (Tiburcio et al, 1994, Borell et al, 1997, Velikova et al, 2000, Verma and Mishra, 2005.…”

Section: Discussionmentioning

confidence: 74%

“…1A). Salt stress induces lipid peroxidation through reactive oxygen species production (Liang et al, 2003;Verma and Mishra, 2005), thus making the membrane leaky as evinced by increased electrolyte leakage. Exogenously applied antioxidants, SNP (NO donor) and polyamine (putrescine) had a protective effect on salt induced membrane damage.…”

Section: Discussionmentioning

confidence: 99%

“…The complex can dismutate superoxide with high efficiency and enhance oxidation of glutathione. Verma and Mishra (2005) have also proposed that the increased activity of SOD due to putrescine, under salinity, might be in order to protect the biomolecules from attack of superoxide radicals (O2 -). NO, however caused no further elevation in SOD activity.…”

Section: Discussionmentioning

confidence: 99%

“…Increasing the concentration of free radical scavengers by exogenous application could help in the detoxification of stress-induced free radical production (Velikova et al, 2000;Shalata and Neuman, 2001;Verma and Mishra, 2005;Wang et al, 2004a;Wang and Yang, 2005;Zhang et al, 2006). In this study, we have tested two antioxidant compounds, putrescine and nitric oxide donor sodium nitroprusside.…”

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confidence: 98%

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Effect of nitric oxide and putrescine on antioxidative responses under NaCl stress in chickpea plants

Sheokand

Kumari

Sawhney

2008

Physiol Mol Biol Plants

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Chickpea plants were subjected to salt stress for 48 h with 100 mM NaCl, after 50 days of growth. Other batches of plants were simultaneously treated with 0.2 mM sodium nitroprusside (NO donor) or 0.5 mM putrescine (polyamine) to examine their antioxidant effects. Sodium chloride stress adversely affected the relative water content (RWC), electrolyte leakage and lipid peroxidation in leaves. Sodium nitroprusside and putrescine could completely ameliorate the toxic effects of salt stress on electrolyte leakage and lipid peroxidation and partially on RWC. No significant decline in chlorophyll content under salt stress as well as with other treatments was observed. Sodium chloride stress activated the antioxidant defense system by increasing the activities of peroxidase (POX), catalase (CAT) superoxide dismutase (SOD) and ascorbate peroxidase (APX). However no significant effect was observed on glutathione reductase (GR) and dehydro ascorbate reductase (DHAR) activities. Both putrescine and NO had a positive effect on antioxidant enzymes under salt stress. Putrescine was more effective in scavenging superoxide radical as it increased the SOD activity under salt stress whereas nitric oxide was effective in hydrolyzing H 2 O 2 by increasing the activities of CAT, POX and APX under salt stress.

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Section: Discussionmentioning

confidence: 74%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 98%

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Effect of nitric oxide and putrescine on antioxidative responses under NaCl stress in chickpea plants

Sheokand

Kumari

Sawhney

2008

Physiol Mol Biol Plants

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“…Anthocyanins are a diverse group of secondary metabolites with a wide array of biological functions, including roles in stress protection (WinkelShirley, 2002). Carotenoids, being antioxidants, have the potential to detoxify the plants from the effects of ROS (Verma and Mishra, 2005). Salinity induced decline in carotenoid content has been reported in maize genotypes (Singh et al, 2008) and wheat genotypes (Sairam et al, 2002).…”

Section: Discussionmentioning

confidence: 99%

Salt-Induced Changes in Antioxidative Enzyme Activities in Shoot Tissues of Two Atriplex Varieties

Kachout¹,

Hamza²,

Bouraoui³

et al. 2013

Not Bot Hort Agrobot Cluj

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This study examined the influence of salt levels on antioxidant activity and content of carotenoids and anthocyanins of the A. hortensis leaves using two varieties: green orach (var. purpurea) and red orach (var. rubra). Seeds of Atriplex were exposed to 0, 90, 180 and 260 mM NaCl for 3 months and seeds were sown in an earthen pot. Overall levels of ascorbate peroxidase (APX) and glutathione reductase (GR) activity were significantly elevated. Salt stress caused a significant decline in tissue concentrations of catalase (CAT) and superoxide dismutase (SOD). However, 90 mM NaCl did not modify these parameters, which remains similar to control values. Activities of APX and CAT were increase whether the shoots of A. hortensis var. purpurea were grown in the presence of 180 mM NaCl. Thus although some indications of oxidative stress accompany exposure of this salt-tolerant Atriplex varieties to salinity, mechanisms appear to exist within its shoot tissue to permit the tolerance of such oxidative stress. High salt concentration in the culture medium provokes oxidative damage in Atriplex leaves and induces a general increase in antioxidant enzyme activity. In particular, NaCl toxicity decreased content of carotenoids. It also decreased the concentration of anthocyanin pigments in leaves of Atriplex. This work therefore provides a starting point towards a better understanding of the role of antioxidant enzyme in the plant response against salt stress.

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Molecular Regulation of Storage Root Formation and Development in Sweet Potato

Ravi¹,

Chakrabarti²,

Makeshkumar³

et al. 2014

Horticultural Reviews: Volume 42

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Storage root formation and development in sweet potato [Ipomoea batatas (L) Lam. Convolvulaceae] is a complex process characterized by the cessation of root elongation, genesis of vascular cambium, anomalous and interstitial cambia, and increase in radial growth by increased cell proliferation and expansion concomitant with the massive deposition of starch and storage proteins that eventually result in storage root enlargement. Phytohormones play a crucial role in the formation of storage roots. Three class I knotted-like homeobox (KNOX1) genes-SRF1, SRF5, and SRF6-modulate carbohydrate metabolism and cell division. The genes Ibkn1 and Ibkn2 activate cytokinin biosynthesis. Transcription factors derived from MADS box genes IbMADS1, IbMADS3, IbMADS4, and IbAGL17 induce signal transduction pathway leading to storage root formation and development. The occurrence of SRD1 transcripts mainly in the actively dividing cells, including the vascular and cambium cells, and the increase in endogenous indole-3-acetic acid (IAA) content and three auxin-inducible AUX/IAA gene transcripts concomitantly with SRD1 transcripts suggest the involvement of SRD1 during the early stage of storage root development. Along with IbMADS1 induction, two storage root marker genes, which encode a major storage protein sporamin and IbAGPase that encodes AGPase for ADP-glucose production in starch biosynthesis, are up-regulated during the early period of storage root development. A class III HD-Zip protein 8 regulating the development of cambia and secondary vascular tissues, a short-root protein that is a key regulator in root 157 radial patterning, meristem maintenance, and asymmetric cell division, the expansin gene IbEXP1 encoding a cell wall loosening protein, genes encoding cyclin A-and cyclin D-like proteins, and five cyclin-dependent kinases are upregulated during storage root formation. Genes encoding ADP-glucose pyrophosphorylase, granule-bound starch synthase, starch synthase, and phosphoglucomutase are up-regulated, whereas genes encoding pyruvate decarboxylase and lactate dehydrogenase are down-regulated during storage root development. The endogenous sucrose levels influence the expression of two AGPase isoforms: ibAGP1 and ibAGP2. The expression of cell wall-bound (extracellular/apoplast) acid invertase activity gene (cwINV) predominates during early period, whereas the expression of cytosolic activity of sucrose synthase gene (SuSy) predominates during later period of storage root enlargement. The competition between lignification and formation of anomalous cambia and the associated starchaccumulating cells determine storage root development. Genes encoding enzymes such as coumaroyl-CoA synthase, caffeoyl-CoA O-methyltransferase, and cinnamyl alcohol dehydrogenase during storage root formation reduce lignification in tissue sections of storage roots.

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Putrescine alleviation of growth in salt stressed Brassica juncea by inducing antioxidative defense system

Cited by 343 publications

References 41 publications

Effect of nitric oxide and putrescine on antioxidative responses under NaCl stress in chickpea plants

Effect of nitric oxide and putrescine on antioxidative responses under NaCl stress in chickpea plants

Salt-Induced Changes in Antioxidative Enzyme Activities in Shoot Tissues of Two Atriplex Varieties

Molecular Regulation of Storage Root Formation and Development in Sweet Potato

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