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Title: Interaction between hydrogen peroxide and sodium nitroprusside following chemical priming of Ocimum basilicum L. against salt stress
Authors: Gohari, Gholamreza 
Alavi, Zahra 
Esfandiari, Ezatollah 
Panahirad, Sima 
Hajihoseinlou, Sedigheh 
Fotopoulos, Vasileios 
Major Field of Science: Natural Sciences
Field Category: Biological Sciences
Keywords: Nitric oxide;Plants;Nitroprusside SNP
Issue Date: Feb-2020
Source: Physiologia Plantarum, 2020, vol. 168, no. 2, pp. 361–373
Volume: 168
Issue: 2
Start page: 361
End page: 373
Journal: Physiologia Plantarum 
Abstract: Sodium nitroprusside (SNP) and hydrogen peroxide (H2 O2 ), as priming agents, have the well-recorded property to increase plant tolerance against a range of different abiotic stresses such as salinity. In this regard, the present study was conducted to evaluate the effect of different levels of SNP (100 and 200 µM) and H2 O2 (2.5 and 5 mM) as well as their combinations under salt stress (0 and 50 mM NaCl) on key physiological and biochemical attributes of the economically important aromatic plant basil (Ocimum basilicum L.) grown under hydroponic culture. Results revealed that morphological parameters such as plant height, root length, leaf fresh and dry weights (FW and DW) were significantly decreased by salinity stress, while SNP and H2 O2 treatments, alone or combined, increased FW and DW thus enhancing plant tolerance to salt stress. Furthermore, 200 µM SNP + 2.5 mM H2 O2 appeared to be the most effective treatment by causing significant increase in chlorophyll a and b, anthocyanin content and guaiacol peroxidase and ascorbate peroxidase enzymes activities under saline condition. In addition, analytical measurements showed that essential oil profile (concentration of main components) under salt stress was mostly affected by SNP and H2 O2 treatments. The highest increase was observed for methyl chavicol (43.09-69.91%), linalool (4.8-17.9%), cadinol (1.5-3.2%) and epi-α-cadinol (0.18-10.75%) compounds. In conclusion, current findings demonstrated a positive crosstalk between SNP and H2 O2 toward improved basil plant tolerance to salt stress, linked with regulation of essential oil composition.
ISSN: 13993054
DOI: 10.1111/ppl.13020
Rights: © Scandinavian Plant Physiology Society
Type: Article
Affiliation : University of Maragheh 
University of Tabriz 
Cyprus University of Technology 
Appears in Collections:Άρθρα/Articles

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