Proline and Glycinebetaine Ameliorated NaCl Stress <i>via</i> Scavenging of Hydrogen Peroxide and Methylglyoxal but Not Superoxide or Nitric Oxide in Tobacco Cultured Cells

Banu, Mst. Nasrin Akhter; Hoque, Md. Anamul; Watanabe-Sugimoto, Megumi; Islam, M.R.; Uraji, Misugi; Matsuoka, Ken; Nakamura, Yoshimasa; Murata, Yoshiyuki

doi:10.1271/bbb.100334

Cited by 95 publications

(58 citation statements)

References 34 publications

(87 reference statements)

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“…Salinity-induced enhancement in free proline and glycinebetaine has been considered as an effective criterion for salt tolerance (Banu et al, 2010;Shahbaz et al, 2011). It is well documented that improved GB and free proline accumulation plays key role in shielding important enzymes, proteins and membranes, and scavenging ROS (Banu et al, 2010), water uptake (Hassine et al, 2010) and osmotic adjustment (Rhodes and Hanson, 1993;Banu et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

Triacontanol-induced Regulation in the Key Osmoprotectants and Oxidative Defense System of Sunflower Plants at Various Growth Stages under Salt Stress

Aziz¹,

Shahbaz²

2015

IJAB

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To cite this paper: Aziz, R. and M. Shahbaz, 2015. Triacontanol-induced regulation in the key osmoprotectants and oxidative defense system of sunflower plants at various growth stages under salt stress. AbstractSalinity is one of the major environmental constraints for limiting crop production at the global level. Exogenous application of triacontanol has the ability to ameliorate the adverse effects of abiotic stresses including salinity stress by modulating a number of physio-biochemical processes in different plants. A wire house study was conducted to explore the prospective role of foliar-applied triacontanol (TRIA) in two sunflower (Helianthus annuus L.) cultivars (SMH-907 and SMH-917) at various growth stages under saline conditions. Both sunflower cultivars were grown-up in sand medium endowed with Hoagland's nutrient solution (full strength) under control (0 mM NaCl) and salt stress (150 mM NaCl) conditions. Foliar spray of three TRIA levels [0 (water spray), 50 and 100 µM] were pertained at three growth stages i.e. vegetative, flowering and vegetative + flowering stages. Imposition of salinity decreased shoot and root dry weights, while increased the accumulation of free proline, glycinebetaine (GB) and activity of glutathione reductase (GR) enzyme. However, a significant salt-induced suppression was observed in the activities of peroxidase (POD) and superoxide dismutase (SOD) enzymes. Foliar-applied TRIA improved the activities of POD, SOD and GR enzymes along with substantial increase in the free proline and glycinebetaine contents while activity of catalase (CAT) enzyme and total soluble protein contents remained unchanged under saline stress at all growth stages in both sunflower cultivars. Overall, foliar-applied TRIA was effective in ameliorating the salt-induced adverse effects on plant growth in terms of shoot and root dry weights of both sunflower cultivars particularly at vegetative growth stage by upregulating the activities of antioxidant enzymes and level of osmoprotectants.

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Section: Discussionmentioning

confidence: 99%

Triacontanol-induced Regulation in the Key Osmoprotectants and Oxidative Defense System of Sunflower Plants at Various Growth Stages under Salt Stress

Aziz¹,

Shahbaz²

2015

IJAB

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“…NO was visualized using 4-amino-5-methylamino-2',7'-difluorofluorescein diacetate (DAF-FM DA). White bars represent 1 mm (Poor et al unpublished et al 2008;Wang et al 2009;Sun et al 2010;Yang et al 2010), cell suspension cultures (Banu et al 2010;Poor andTari 2011), andprotoplasts (Gemes et al 2011) after NaCl treatment. Zhang et al (2006) observed time-dependent changes in NO production in Zea mays leaves after treatment with 100 mM NaCl.…”

Section: No Production In Plants Exposed To Naclmentioning

confidence: 99%

Role of Nitric Oxide in Salt Stress-induced Programmed Cell Death and Defense Mechanisms

Poór

Laskay

Tari

2015

Nitric Oxide Action in Abiotic Stress Responses in Plants

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“…In response to stress and diseases, a rapid increase in MG level has been found in animals, mammals, yeast, and bacterial systems (Thornally, 1990;Kalapos et al, 1992; (Yadav et al, 2005a;Singla-Pareek et al, 2006;Banu et al, 2010). Yadav et al (2005a) first showed that induction of the level of MG in response to various abiotic stresses is a common phenomenon in different crop species in which rice, Pennisetum, tobacco and Brassica seedlings showed a 2-to 6-fold increase in MG levels in response to salt, drought and cold stresses.…”

Section: Induction Of Mg Levels In Plants In Response To Abiotic and mentioning

confidence: 99%

Glyoxalase System and Reactive Oxygen Species Detoxification System in Plant Abiotic Stress Response and Tolerance: An Intimate Relationship

Hossain¹,

Silva²,

Fujita³

2011

Abiotic Stress in Plants - Mechanisms and Adaptations

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Proline and Glycinebetaine Ameliorated NaCl Stress via Scavenging of Hydrogen Peroxide and Methylglyoxal but Not Superoxide or Nitric Oxide in Tobacco Cultured Cells

Cited by 95 publications

References 34 publications

Triacontanol-induced Regulation in the Key Osmoprotectants and Oxidative Defense System of Sunflower Plants at Various Growth Stages under Salt Stress

Triacontanol-induced Regulation in the Key Osmoprotectants and Oxidative Defense System of Sunflower Plants at Various Growth Stages under Salt Stress

Role of Nitric Oxide in Salt Stress-induced Programmed Cell Death and Defense Mechanisms

Glyoxalase System and Reactive Oxygen Species Detoxification System in Plant Abiotic Stress Response and Tolerance: An Intimate Relationship

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