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Melatonin and nitric oxide regulate sunflower seedling growth under salt stress accompanying differential expression of Cu/Zn SOD and Mn SOD.
Free Radic Biol Med. 2017 05; 106:315-328.FR

Abstract

Salinity results in significant reduction in sunflower (Helianthus annuus L.) seedling growth and excessive generation of reactive oxygen species (ROS). Present work highlights the possible role of melatonin as an antioxidant through its interaction with nitric oxide (NO), and as an early and long distance NaCl-stress sensing signaling molecule in seedling cotyledons. Exogenous melatonin (15µM)±NaCl (120mM) inhibit seedling growth, which is also correlated with NO availability, accumulation of potential superoxide anion (O2•-) and peroxynitrite anion (ONOO-), extent of tyrosine-nitration of proteins, spatial localization and activity of superoxide dismutase (SOD) isoforms. NO acts as a positive modulator of melatonin accumulation in seedling cotyledons as a long-distance signaling response. Modulation of superoxide anion and peroxynitrite anion content by melatonin highlights its crucial role in combating deleterious effects of ROS and reactive nitrogen species (RNS). Present findings provide evidence for an interaction between melatonin and NO in their effect on seedling growth under salt stress accompanying differential modulation of two SOD isoforms, i.e. Cu/Zn SOD and Mn SOD.

Authors+Show Affiliations

Laboratory of Plant Physiology and Biochemistry, Department of Botany, University of Delhi, Delhi 110007, India. Electronic address: spillcanvas29@gmail.com.Laboratory of Plant Physiology and Biochemistry, Department of Botany, University of Delhi, Delhi 110007, India. Electronic address: bhatlasc@gmail.com.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

28254544

Citation

Arora, Dhara, and Satish C. Bhatla. "Melatonin and Nitric Oxide Regulate Sunflower Seedling Growth Under Salt Stress Accompanying Differential Expression of Cu/Zn SOD and Mn SOD." Free Radical Biology & Medicine, vol. 106, 2017, pp. 315-328.
Arora D, Bhatla SC. Melatonin and nitric oxide regulate sunflower seedling growth under salt stress accompanying differential expression of Cu/Zn SOD and Mn SOD. Free Radic Biol Med. 2017;106:315-328.
Arora, D., & Bhatla, S. C. (2017). Melatonin and nitric oxide regulate sunflower seedling growth under salt stress accompanying differential expression of Cu/Zn SOD and Mn SOD. Free Radical Biology & Medicine, 106, 315-328. https://doi.org/10.1016/j.freeradbiomed.2017.02.042
Arora D, Bhatla SC. Melatonin and Nitric Oxide Regulate Sunflower Seedling Growth Under Salt Stress Accompanying Differential Expression of Cu/Zn SOD and Mn SOD. Free Radic Biol Med. 2017;106:315-328. PubMed PMID: 28254544.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Melatonin and nitric oxide regulate sunflower seedling growth under salt stress accompanying differential expression of Cu/Zn SOD and Mn SOD. AU - Arora,Dhara, AU - Bhatla,Satish C, Y1 - 2017/02/28/ PY - 2016/12/03/received PY - 2017/02/17/revised PY - 2017/02/21/accepted PY - 2017/3/4/pubmed PY - 2017/12/16/medline PY - 2017/3/4/entrez KW - Helianthus annuus KW - Long distance signaling KW - Melatonin KW - Nitric oxide KW - Salinity KW - Seedling growth KW - Sunflower KW - Superoxide dismutase SP - 315 EP - 328 JF - Free radical biology & medicine JO - Free Radic Biol Med VL - 106 N2 - Salinity results in significant reduction in sunflower (Helianthus annuus L.) seedling growth and excessive generation of reactive oxygen species (ROS). Present work highlights the possible role of melatonin as an antioxidant through its interaction with nitric oxide (NO), and as an early and long distance NaCl-stress sensing signaling molecule in seedling cotyledons. Exogenous melatonin (15µM)±NaCl (120mM) inhibit seedling growth, which is also correlated with NO availability, accumulation of potential superoxide anion (O2•-) and peroxynitrite anion (ONOO-), extent of tyrosine-nitration of proteins, spatial localization and activity of superoxide dismutase (SOD) isoforms. NO acts as a positive modulator of melatonin accumulation in seedling cotyledons as a long-distance signaling response. Modulation of superoxide anion and peroxynitrite anion content by melatonin highlights its crucial role in combating deleterious effects of ROS and reactive nitrogen species (RNS). Present findings provide evidence for an interaction between melatonin and NO in their effect on seedling growth under salt stress accompanying differential modulation of two SOD isoforms, i.e. Cu/Zn SOD and Mn SOD. SN - 1873-4596 UR - https://www.unboundmedicine.com/medline/citation/28254544/Melatonin_and_nitric_oxide_regulate_sunflower_seedling_growth_under_salt_stress_accompanying_differential_expression_of_Cu/Zn_SOD_and_Mn_SOD_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0891-5849(17)30114-4 DB - PRIME DP - Unbound Medicine ER -