2020
DOI: 10.32615/bp.2019.151
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The enhancement of salt stress tolerance by salicylic acid pretreatment in Arabidopsis thaliana

Abstract: Salicylic acid (SA) is an important plant hormone involved in the activation of defense responses against environmental stresses. However, there are still large of unsolved mysteries about how SA pretreatment affects the establishment of plant stress tolerance. In this study, application of SA at different concentrations and different times were conducted to investigate their effects on the response of Arabidopsis seedlings to salt stress. The pretreatment with 10 or 20 μM SA for more than 6 h promoted Arabido… Show more

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Cited by 15 publications
(6 citation statements)
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“…Organic acids represented the second metabolite class highly affected by Zn 2+ treatment of the A. caudatus plants and mostly responded with up-regulation. Salicylic acid (SA), which was strong upregulated in our study, is one of the key plant hormones involved in the activation of diverse stress responses (Agnihotri et al, 2018;Yu et al, 2020), including responses to HM by controlling the biosynthesis of secondary metabolites and ROS scavenging osmoprotectants (Sharma et al, 2020).…”
Section: Discussionmentioning
confidence: 72%
“…Organic acids represented the second metabolite class highly affected by Zn 2+ treatment of the A. caudatus plants and mostly responded with up-regulation. Salicylic acid (SA), which was strong upregulated in our study, is one of the key plant hormones involved in the activation of diverse stress responses (Agnihotri et al, 2018;Yu et al, 2020), including responses to HM by controlling the biosynthesis of secondary metabolites and ROS scavenging osmoprotectants (Sharma et al, 2020).…”
Section: Discussionmentioning
confidence: 72%
“…Antioxidant enzymes can eliminate excessive ROS induced by salt stress and thereafter alleviate oxidative stress in plants (Liu & Lv, 2011). In addition, SA was reported to regulate redox homeostasis in plants due to its enhancement of antioxidant enzyme activity (Shaki et al., 2017; Yu, Liu, et al., 2020). Consistent with the above discoveries, our results confirmed that SA increased the activities of SOD, CAT, and POD of NaCl‐treated K. obovata roots, which was supported by the up‐regulation of FSD1 , CAT1 , and POD1 transcripts (Figure 10) and APX1 , MDAR1 , GR1 , and DHAR1 transcripts (Figure 11).…”
Section: Discussionmentioning
confidence: 99%
“…SA also mediates plant resistance to abiotic and biotic stresses, including drought, heat, salinity, heavy metals pollutants, and pathogen infection (Drazic & Mihailovic, 2005; Metwally et al., 2003; Yang et al., 2004). It was reported that SA‐enhanced the salt tolerance of plants by regulating the transmembrane transport of Na + and K + ions and improving the activity of antioxidant enzymes (Jayakannan et al., 2015; Yu, Liu, et al., 2020). Subsequent experiments revealed that SA depended on H 2 O 2 to improve plant tolerance to high salinity (Jayakannan et al., 2015; Rao et al., 2019; Shaki et al., 2017).…”
Section: Introductionmentioning
confidence: 99%
“…1.15.1.1), catalase (CAT; E.C. 1.11.1.6), ascorbate peroxidase (APX; EC 1.11.1.11), and guaiacol peroxidase (GPX; EC 1.11.1.9) were assayed according to the methods of Yu et al [ 8 ].…”
Section: Methodsmentioning
confidence: 99%
“…However, cyanide is well known as an inhibitor of cytochrome c oxidase of the mitochondrial electron transport chain; furthermore, it also inhibits other enzymes, notably catalase, peroxidase, nitrate/nitrite reductase, superoxide dismutase, and Rubisco [ 3 , 6 ]. To prevent self-poisoning, plants maintain an endogenous cyanide detoxification pathway, the cyanoalanine synthase (CAS; EC 4.4.1.9) pathway [ 7 , 8 ]. Under the catalysis of CAS, cyanide reacts with cysteine to form hydrogen sulfide (H 2 S) and β-cyanoalanine and is then converted to either asparagine or aspartate in conjunction with ammonia by a dual-function nitrile hydratase/nitrilase (EC 3.5.5.1) [ 9 , 10 ].…”
Section: Introductionmentioning
confidence: 99%