Effect of salt stress on ion concentration, proline content, antioxidant enzyme activities and gene expression in tomato cultivars

Gharsallah, Charfeddine; Fakhfakh, H.; Grubb, Douglas C.; Gorsane, F.

doi:10.1093/aobpla/plw055

Cited by 205 publications

(139 citation statements)

References 101 publications

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“…3). High proline contents represent Ni stress in plants growing in contaminated media [44]. The susceptible cultivars show less proline contents as compared to resistant ones when subjected to the same level of abiotic stress [45].…”

Section: Resultsmentioning

confidence: 99%

Effect of Enterobacter sp. CS2 and EDTA on the Phytoremediation of Ni-contaminated Soil by Impatiens balsamina

Yasin¹,

Khan²,

Ahmad³

et al. 2018

Pol. J. Environ. Stud.

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During our current study we evaluated the effect of ethylenediaminetetracetic acid (EDTA) and Enterobacter sp. CS2 on nickel stress alleviation and phytoextraction by Impatiens balsamina L in spiked soil. Nickel resistant Enterobacter sp. CS2 was isolated from soil polluted by industrial effluents. The I. balsamina seeds primed with Enterobacter sp. CS2 were raised in EDTA-supplemented soil (10 mM) contaminated with 0, 100, 200, and 300 mg kg -1 Ni for 50 days. The effect of different treatments on plant growth attributes, nickel tolerance index, bioconcentration factor, and translocation factor were evaluated. The Ni stress reduced plant growth, carotenoids, and chlorophyll (chl) content. However, higher Ni uptake and proline contents were observed in plants growing in Ni-contaminated soils. The Enterobacter sp. CS2 inoculation further enhanced Ni uptake and proline contents in I. balsamina plants growing under Ni stress. The inoculated plants showed improved shoot length, root length, carotenoid content, chl 'a' and 'b' contents, root and shoot dry weight. The Ni tolerance index in Enterobacter sp. CS2-assisted plants was much higher compared to un-inoculated ones. The inoculated plants supplemented with EDTA enhanced 39%, 34%, and 30% Ni uptake in roots respectively under 100, 200, and 300 mg kg -1 of Ni treatment as compared with un-inoculated plants. The data regarding bioconcentration factor and translocation factor showed that Ni phytoextraction capability of I. balsamina plants was significantly enhanced with the supplementation of Enterobacter sp. CS2 and EDTA.

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Section: Resultsmentioning

confidence: 99%

Effect of Enterobacter sp. CS2 and EDTA on the Phytoremediation of Ni-contaminated Soil by Impatiens balsamina

Yasin¹,

Khan²,

Ahmad³

et al. 2018

Pol. J. Environ. Stud.

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“…To this end, 54 primary metabolites were characterised in the leaves (sixth leaf counted from the bottom of the stem) of 22-d-old wild-type and transgenic lines after 5 d of salt (120 mM NaCl) stress. Accumulation of proline by salt stress has been reported in several plant species including tomato (Verbruggen and Hermans, 2008;Gharsallah et al, 2016). Those metabolites that were present at Table S2).…”

Section: Sltaf1 Alters Primary Metabolism Upon Salt Treatment In Tomatomentioning

confidence: 94%

Multifaceted regulatory function of tomato SlTAF1 in the response to salinity stress

et al. 2019

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Salinity stress limits plant growth and has a major impact on agricultural productivity. Here, we identify NAC transcription factor SlTAF1 as a regulator of salt tolerance in cultivated tomato (Solanum lycopersicum).While overexpression of SlTAF1 improves salinity tolerance compared with wild-type, lowering SlTAF1 expression causes stronger salinity-induced damage. Under salt stress, shoots of SlTAF1 knockdown plants accumulate more toxic Na + ions, while SlTAF1 overexpressors accumulate less ions, in accordance with an altered expression of the Na + transporter genes SlHKT1;1 and SlHKT1;2. Furthermore, stomatal conductance and pore area are increased in SlTAF1 knockdown plants during salinity stress, but decreased in SlTAF1 overexpressors.We identified stress-related transcription factor, abscisic acid metabolism and defence-related genes as potential direct targets of SlTAF1, correlating it with reactive oxygen species scavenging capacity and changes in hormonal response. Salinity-induced changes in tricarboxylic acid cycle intermediates and amino acids are more pronounced in SlTAF1 knockdown than wild-type plants, but less so in SlTAF1 overexpressors. The osmoprotectant proline accumulates more in SlTAF1 overexpressors than knockdown plants.In summary, SlTAF1 controls the tomato's response to salinity stress by combating both osmotic stress and ion toxicity, highlighting this gene as a promising candidate for the future breeding of stress-tolerant crops.

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“…In addition, at the salinity level of 6 dS m -1 , S.E (seed + EPS) treatment and at the salinity level of 8 dS m -1 , S.N (seed + silicon nanoparticles) treatment decreased proline content significantly as compared to the control. Many species of plants synthesize suitable organic solutions such as proline in the cytosol under salinity stress, which is a considerable factor for salinity tolerance [45][46]. As stated by Ashraf and Foolad [23], the actions related to proline are osmoregulation, detoxification of harmful ions, and reduced salinity damage.…”

Section: Plant Biomassmentioning

confidence: 99%

Influence of Exopolysaccharide-Producing Bacteria and SiO2 Nanoparticles on Proline Content and Antioxidant Enzyme Activities of Tomato Seedlings (Solanum lycopersicum L.) under Salinity Stress

Isfahani¹,

Tahmourespour²,

Hoodaji³

et al. 2018

Pol. J. Environ. Stud.

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A greenhouse experiment was conducted to evaluate the effects regarding inoculation of exopolysaccharide (EPS)-producing bacterium, the extracted EPS and silicon nanoparticles on Solanum lycopersicum L. seeds under salinity stress, in a completely randomized factorial design with three replicates. The inoculated seeds with silicon nanoparticles (8 gr L -1 ), bacterial EPS (0.01 M), and 1 mL of bacterial suspension (1×10 8 CFU mL -1 ) were sown in pots and irrigated with water at different salinity levels (0.3, 2, 4, 6, and 8 dS m -1 ). Results showed that treatment application could enhance salinity tolerance of tomato seeds and improve plant growth so that combined treatments of EPS and silicon nanoparticles (S.E.N), bacteria and silicon nanoparticles (S.B.N), and EPS with silicon nanoparticles and bacteria (S.E.B.N) were the best treatments for plant growth and improvement regarding salinity levels. The mentioned treatments significantly (p<0.01) increased root and shoot fresh or dry weight in comparison to the control sample. In addition, treatments significantly (p<0.01) decreased proline content and antioxidant enzyme activities. Thus, it can be concluded that applied treatments are suitable for agricultural and environmental applications and bring about less damage caused by salinity stress.

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Effect of salt stress on ion concentration, proline content, antioxidant enzyme activities and gene expression in tomato cultivars

Cited by 205 publications

References 101 publications

Effect of Enterobacter sp. CS2 and EDTA on the Phytoremediation of Ni-contaminated Soil by Impatiens balsamina

Effect of Enterobacter sp. CS2 and EDTA on the Phytoremediation of Ni-contaminated Soil by Impatiens balsamina

Multifaceted regulatory function of tomato SlTAF1 in the response to salinity stress

Influence of Exopolysaccharide-Producing Bacteria and SiO2 Nanoparticles on Proline Content and Antioxidant Enzyme Activities of Tomato Seedlings (Solanum lycopersicum L.) under Salinity Stress

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