Enhanced antioxidant enzyme activities and respective gene expressionsin potato somatic hybrids under NaCl stress

Jbir-Koubaa, Rania; Charfeddine, Safa; Bouaziz, Donia; Mansour, Rim Ben; Gargouri-Bouzid, Radhia; Nouri-Ellouz, Oumèma

doi:10.32615/bp.2019.075

Cited by 6 publications

(3 citation statements)

References 53 publications

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“…Interestingly, CAT activity was not increased in our study. However, the previous studies have shown that CAT activity was significantly increased in salt-tolerant potatoes [44]. We speculated that SOD and POD might play a major role in our salt-tolerant varieties.…”

Section: Discussionmentioning

confidence: 81%

Physiology and Gene Expression Analysis of Potato (Solanum tuberosum L.) in Salt Stress

Qin

et al. 2022

Plants

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The production of potato (Solanum tuberosum L.) faces a severe challenge due to the salinization of arable land worldwide. The cultivation of salt-tolerant potatoes is of great significance to ensure food security. In this study, two cultivars of ‘Longshu 5’ and ‘Qingshu 9’ were compared for physiological responses to salt stress, and then the salt tolerance of the two cultivars were assessed via principal component analysis. Furthermore, the Na+, K+, and Ca2+ flux of the cultivars under salt stress was recorded. Finally, the expression levels of ion transport-related genes and transcription factors in salt-tolerant cultivars were explored under NaCl stress. The results showed that the seven physiological indicators of salt tolerance were differed between the cultivars. Interestingly, soluble protein and sugar were early responsive to salt stress than proline in the salt-tolerance cultivar. Peroxidase and superoxide dismutase activity were significantly different in ‘Longshu 5’ under NaCl stress and without being significantly different in ‘Qingshu9’. In addition, the salt tolerance of ‘Longshu 5’ was more tolerant than ‘Qingshu 9’ based on principal component evaluation. Meanwhile, the strong efflux of Na+, the stability of K+, and the high absorption of Ca2+ in ‘Longshu 5’ indicated salt adaption mechanisms in the salt-tolerant potato. In addition, we found that ion transport-related genes and transcription factors, such as StSOS1, StNHX4, StAKT1, StNAC24, and StCYP707A, played a role in the salt tolerance of ‘Longshu 5’. In conclusion, the salt-tolerant potato can regulate physiological substances to adapt to salt stress, and ion transport related genes and transcription factors play a role in improving salt tolerance.

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Section: Discussionmentioning

confidence: 81%

Physiology and Gene Expression Analysis of Potato (Solanum tuberosum L.) in Salt Stress

Qin

et al. 2022

Plants

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“…The increase in RDM and R/S ratio observed in the present study may also be related to the beneficial effect of applying H 2 O 2 in adequate concentrations, which significantly increases tolerance to oxidative stress caused by salinity, increasing the antioxidant status of the plant cells and tissues [ 35 ], as well as changes in gene expression, transport of sugars and phytohormones [ 36 ].…”

Section: Resultsmentioning

confidence: 99%

Effect of Hydrogen Peroxide Application on Salt Stress Mitigation in Bell Pepper (Capsicum annuum L.)

Aragão,

Lima,

Lima

et al. 2023

Plants

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The present study aimed to evaluate the effects of the foliar application of hydrogen peroxide on the attenuation of salt stress on the growth, photochemical efficiency, production and water use efficiency of ‘All Big’ bell pepper plants. The experiment was conducted under greenhouse conditions in Campina Grande, PB, Brazil. Treatments were distributed in a randomized block design, in a 5 × 5 factorial scheme, corresponding to five levels of electrical conductivity of irrigation water (0.8, 1.2, 2.0, 2.6 and 3.2 dS m−1) and five concentrations of hydrogen peroxide (0, 15, 30, 45 and 60 μM), with three replicates. Foliar application of hydrogen peroxide at concentration of 15 μM attenuated the deleterious effects of salt stress on photochemical efficiency, biomass accumulation and production components of bell pepper plants irrigated using water with an electrical conductivity of up to 3.2 dS m−1. Foliar spraying of hydrogen peroxide at a concentration of 60 μM intensified the effects of salt stress. The ‘All Big’ bell pepper was classified as moderately sensitive to salt stress, with an irrigation water salinity threshold of 1.43 dS m−1 and a unit decrease of 8.25% above this salinity level.

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“…Delikat and Rasant. The genes were present also in BC1 and BC2 progenies and resistance to late blight Oxidative stress responses [183] NS -not specified.…”

Section: Use Of Cell Fusion Between Potato Crop and Its Wild Relatives For Resilient Potatomentioning

confidence: 99%

Biotechnological Strategies for a Resilient Potato Crop

Rákosy-Tican¹,

Molnár²

2021

Solanum Tuberosum - A Promising Crop for Starvation Problem

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The aim of this chapter is to describe in a synthetic manner the most efficient biotechnological techniques which can be applied in potato breeding with emphasis on multiple resistance traits. To this end, most important results of all biotechnological techniques will be pointed out including new biotechnological tools of genome editing. The somatic hybridization will be the core of the presentation as the only non-GMO strategy with good results in transferring multiple resistances into potato gene pool. The chapter is presenting all data in a synthesized form and made comparisons between the existing techniques and their possible adoption in breeding in different parts of the world, depending on regulations and consumer choice. Moreover, the recently discovered value of potato as a healthy food and its possible applications in cancer treatment will be also discussed with new data on both potato and some of its wild relatives.

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Enhanced antioxidant enzyme activities and respective gene expressionsin potato somatic hybrids under NaCl stress

Cited by 6 publications

References 53 publications

Physiology and Gene Expression Analysis of Potato (Solanum tuberosum L.) in Salt Stress

Physiology and Gene Expression Analysis of Potato (Solanum tuberosum L.) in Salt Stress

Effect of Hydrogen Peroxide Application on Salt Stress Mitigation in Bell Pepper (Capsicum annuum L.)

Biotechnological Strategies for a Resilient Potato Crop

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