Assessing the Adaptive Mechanisms of Two Bread Wheat (Triticum aestivum L.) Genotypes to Salinity Stress

İbrahimova, Ulkar; Suleymanova, Zarifa; Brestič, Marián; Mammadov, Alamdar; Ali, Omar M.; Latef, Arafat Abdel Hamed Abdel; Hossain, Akbar

doi:10.3390/agronomy11101979

Cited by 7 publications

(8 citation statements)

References 52 publications

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“…Osmotic stress can be evoked by not only salinity but also by drought and heavy metal ions. These stress factors change morphological traits causing the reduction in leaf size and vegetative growth, a decline in photosynthesis rate, stomatal conductance, and alter stem anatomical features [ 17 , 18 , 19 , 20 , 21 ]. To counteract the negative effects of direct exposure to salinity, plants have developed internal defense mechanisms.…”

Section: Introductionmentioning

confidence: 99%

“…The locations of the Nax 1 (chromosome 2A) and Nax 2 (chromosome 5A) genes were confirmed by quantitative trait locus (QTL) analysis and identified by fine-mapping the Na + transporter from the HKT gene families— HKT7 for Nax 1 and HKT8 for Nax 2 [ 38 , 41 ]. Ibrahimowa et al [ 21 ] studied the response of two T. aestivum genotypes differing in terms of salinity tolerance. These authors observed an increased expression level of the TaHKT1;5 genes in the roots of the salt-sensitive genotype, and its decrease in the salt-tolerant one.…”

Section: Introductionmentioning

confidence: 99%

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Physiological and Biochemical Parameters of Salinity Resistance of Three Durum Wheat Genotypes

Pastuszak

Dziurka

Hornyák

et al. 2022

IJMS

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The area of farming lands affected by increasing soil salinity is growing significantly worldwide. For this reason, breeding works are conducted to improve the salinity tolerance of important crop species. The goal of the present study was to indicate physiological or biochemical parameters characterizing three durum wheat accessions with various tolerance to salinity. The study was carried out on germinating seeds and mature plants of a Polish SMH87 line, an Australian cultivar ‘Tamaroi’ (salt-sensitive), and the BC5Nax2 line (salt-tolerant) exposed to 0–150 mM NaCl. Germination parameters, electrolyte leakage (EL), and salt susceptibility index were determined in the germinating caryopses, whereas photosynthetic parameters, carbohydrate and phenolic content, antioxidant activity as well as yield were measured in fully developed plants. The parameters that most differentiated the examined accessions in the germination phase were the percentage of germinating seeds (PGS) and germination vigor (Vi). In the fully developed plants, parameters included whether the plants had the maximum efficiency of the water-splitting reaction on the donor side of photosystem II (PSII)–Fv/F0, energy dissipation from PSII–DIo/CSm, and the content of photosynthetic pigments and hydrogen peroxide, which differentiated studied genotypes in terms of salinity tolerance degree. Salinity has a negative impact on grain yield by reducing the number of seeds per spike and the mass of one thousand seeds (MTS), which can be used as the most suitable parameter for determining tolerance to salinity stress. The most salt-tolerant BC5Nax2 line was characterized by the highest PGS, and Vi for NaCl concentration of 100–150 mM, content of chlorophyll a, b, carotenoids, and also MTS at all applied salt concentrations as compared with the other accessions. The most salt-sensitive cv. ‘Tamaroi’ demonstrated higher H2O2 concentration which proves considerable oxidative damage caused by salinity stress. Mentioned parameters can be helpful for breeders in the selection of genotypes the most resistant to this stress.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Physiological and Biochemical Parameters of Salinity Resistance of Three Durum Wheat Genotypes

Pastuszak

Dziurka

Hornyák

et al. 2022

IJMS

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“…MDA content, one of the most important products of membrane lipid peroxidation, reflects the degree of damage to the membrane system under biotic and abiotic stresses [12][13][14][15][16]. Salt stress was shown to cause lipid peroxidation as well as the accumulation of soluble sugars and PRO, and to increase the activity of antioxidant enzymes in both salt-resistant and salt-sensitive bread wheat [17]. Increasing NaCl was shown to increase the SOD and POD activities, as well as the PRO and MDA contents, in linseed [18].…”

Section: Introductionmentioning

confidence: 99%

Effects of Salt Stress on the Antioxidant Activity and Malondialdehyde, Solution Protein, Proline, and Chlorophyll Contents of Three Malus Species

Wang

Gao

Sun

et al. 2022

Life

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Understanding the different physiological responses of Malus species under salt stress in the seedling stages will be useful in breeding salt-tolerant dwarfing apple rootstocks. Seedlings of Malus Zumi (Mats.) Rehd. (M. zumi), Malus sieversii (Led.) Roem. (M. sieversii), and Malus baccata (L.) Borkh. (M. baccata) were treated with solution of 0, 0.20%, 0.40%, and 0.60% salinity. Physiological parameters of their leaves and roots were measured at 0 d, 4 d, 8 d and 12 d after salinity treatments. Superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), malondialdehyde (MDA), solution protein (SP), and proline (PRO) initially increased and then decreased. The activities and contents of these parameters were higher in the 0.40% and 0.60% NaCl treatments than in the 0.20% treatment and in the 0% control. M. zumi was the most resistant to salt stress, showing the lowest content of MDA in the leaves and roots, which increased slightly under salt stress. M. baccata had the highest increase in both the content and proportion of MDA. High enzyme activity was shown to play an important role in the salt resistance of M. zumi. Moreover, it can be speculated that there are other substances that also play a major role. We found that osmotic regulation played a key role in response to salt stress for M. baccata even though it was sensitive to salt stress. For M. sieversii, both the osmotic regulation and enzymatic antioxidants were observed to play a major role in mitigating salt stress.

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“…Na + and Cl − contents were much higher in salinity and combined salinity-drought stress than in individual drought stress ( Figure 4 A,C), indicating that water constraint in saline soils does not increase Na + and Cl − accumulation in plants. Salinity stress has primarily increased the concentration of Na + while decreasing the concentration of K + [ 85 , 86 , 87 ], causing the Na + /K + ratio in plant cells to fall out of balance [ 88 , 89 ]. Under sustained combined stress, plants encounter ionic toxicity [ 90 , 91 ].…”

Section: Discussionmentioning

confidence: 99%

How Do Plants Respond to Combined Drought and Salinity Stress?—A Systematic Review

Angon

Tahjib‐Ul‐Arif

Samin

et al. 2022

Plants

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Plants are frequently exposed to one or more abiotic stresses, including combined salinity-drought, which significantly lowers plant growth. Many studies have been conducted to evaluate the responses of plants to combined salinity and drought stress. However, a meta-analysis-based systematic review has not been conducted yet. Therefore, this study analyzed how plants respond differently to combined salinity-drought stress compared to either stress alone. We initially retrieved 536 publications from databases and selected 30 research articles following a rigorous screening. Data on plant growth-related, physiological, and biochemical parameters were collected from these selected articles and analyzed. Overall, the combined salinity-drought stress has a greater negative impact on plant growth, photosynthesis, ionic balance, and oxidative balance than either stress alone. In some cases, salinity had a greater impact than drought stress and vice versa. Drought stress inhibited photosynthesis more than salinity, whereas salinity caused ionic imbalance more than drought stress. Single salinity and drought reduced shoot biomass equally, but salinity reduced root biomass more than drought. Plants experienced more oxidative stress under combined stress conditions because antioxidant levels did not increase in response to combined salinity-drought stress compared to individual salinity or drought stress. This study provided a comparative understanding of plants’ responses to individual and combined salinity and drought stress, and identified several research gaps. More comprehensive genetic and physiological studies are needed to understand the intricate interplay between salinity and drought in plants.

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Assessing the Adaptive Mechanisms of Two Bread Wheat (Triticum aestivum L.) Genotypes to Salinity Stress

Cited by 7 publications

References 52 publications

Physiological and Biochemical Parameters of Salinity Resistance of Three Durum Wheat Genotypes

Physiological and Biochemical Parameters of Salinity Resistance of Three Durum Wheat Genotypes

Effects of Salt Stress on the Antioxidant Activity and Malondialdehyde, Solution Protein, Proline, and Chlorophyll Contents of Three Malus Species

How Do Plants Respond to Combined Drought and Salinity Stress?—A Systematic Review

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