Identification of novel source of salt tolerance in local bread wheat germplasm using morpho-physiological and biochemical attributes

Hussain, N.; Ghaffar, Abdul; Zafar, Zafar Ullah; Javed, Muhammad; Shah, Kausar Hussain; Noreen, Sibgha; Manzoor, Hamid; Iqbal, Muhammad; Hassan, Islam F.; Bano, Hussan; Gul, Hafiza Saima; Aamir, Misbah; Khalid, Ayesha; Sohail, Younas; Ashraf, Muhammad; Athar, Habib‐ur‐Rehman

doi:10.1038/s41598-021-90280-w

Cited by 44 publications

(17 citation statements)

References 32 publications

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“…Positive correlations between parameters of tolerance to salinity measured in the early growth stages and those measured at full maturity were reported by El-Hendawy et al [19] and Turki et al [69]. Furthermore, Dugasa et al [70] and Hussain et al [71] reported that a reduction in wheat grain yield (phenophase of full maturity) was associated with a decrease in morphological parameters measured in the tillering phenophase.…”

Section: Discussionmentioning

confidence: 63%

Assessment of Genotype Stress Tolerance as an Effective Way to Sustain Wheat Production under Salinity Stress Conditions

Stojšin¹,

Petrović

Banjac

et al. 2022

Sustainability

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The creation of salt-tolerant wheat genotypes can provide a basis for sustainable wheat production in areas that are particularly sensitive to the impacts of climate change on soil salinity. This study aimed to select salt-tolerant wheat genotypes that could serve as a genetic resource in breeding for salinity tolerance. A two-year experiment was established with 27 wheat genotypes, grown in salinity stress and non-stress conditions. Agronomic parameters (plant height, spike weight, number of grains per spike, thousand grain weight, and grain yield/plant) were analyzed in the phenophase of full maturity, while biochemical parameters (DPPH radical scavenging activity and total phenolic content) were tested in four phenophases. Grain yield/plant was the most sensitive parameter to salinity, with a 31.5% reduction in value. Selection based on salt tolerance indices (STI, MP, and GMP) favored the selection of the genotypes Renesansa, Harmonija, Orašanka, Bankut 1205, KG-58, and Jugoslavija. Based on YI (1.30) and stability analysis, the genotype Harmonija stands out as the most desirable genotype for cultivation in saline conditions. The presence of positive correlations between grain yield/plant and biochemical parameters, in all phenophases, enables the selection of genotypes with high antioxidant activity and high yield potential, even in the early stages of plant development.

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Section: Discussionmentioning

confidence: 63%

Assessment of Genotype Stress Tolerance as an Effective Way to Sustain Wheat Production under Salinity Stress Conditions

Stojšin¹,

Petrović

Banjac

et al. 2022

Sustainability

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show abstract

“…The selected tolerant and sensitive genotypes were re-evaluated in a further study to identify the biochemical, physiological, and ionic mechanisms of salinity tolerance. The better performance of salt-tolerant genotypes under stress conditions was found to be associated with maintenance of high K + /Na + ratio, photosynthetic activity, accumulation of osmotic regulators, and higher activities of antioxidant enzymes that minimize the production of ROS [ 39 , 40 , 41 ]. The results of these studies were found consistent with our experimental findings.…”

Section: Discussionmentioning

confidence: 99%

Salinity Stress Tolerance in Potato Cultivars: Evidence from Physiological and Biochemical Traits

Sanwal

Kumar

Kesh

et al. 2022

Plants

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Salinity stress is a major constraint to sustainable crop production due to its adverse impact on crop growth, physiology, and productivity. As potato is the fourth most important staple food crop, enhancing its productivity is necessary to ensure food security for the ever-increasing population. Identification and cultivation of salt-tolerant potato genotypes are imperative mitigating strategies to cope with stress conditions. For this purpose, fifty-three varieties of potato were screened under control and salt stress conditions for growth and yield-related traits during 2020. Salt stress caused a mean reduction of 14.49%, 8.88%, and 38.75% in plant height, stem numbers, and tuber yield, respectively in comparison to control. Based on percent yield reduction, the genotypes were classified as salt-tolerant (seven genotypes), moderately tolerant (thirty-seven genotypes), and salt-sensitive genotypes (nine genotypes). Seven salt-tolerant and nine salt-sensitive genotypes were further evaluated to study their responses to salinity on targeted physiological, biochemical, and ionic traits during 2021. Salt stress significantly reduced the relative water content (RWC), membrane stability index (MSI), photosynthesis rate (Pn), transpiration rate (E), stomatal conductance, and K+/Na+ ratio in all the sixteen genotypes; however, this reduction was more pronounced in salt-sensitive genotypes compared to salt-tolerant ones. The better performance of salt-tolerant genotypes under salt stress was due to the strong antioxidant defense system as evidenced by greater activity of super oxide dismutase (SOD), peroxidase (POX), catalase (CAT), and ascorbate peroxidase (APX) and better osmotic adjustment (accumulation of proline). The stepwise regression approach identified plant height, stem numbers, relative water content, proline content, H2O2, POX, tuber K+/Na+, and membrane stability index as predominant traits for tuber yield, suggesting their significant role in alleviating salt stress. The identified salt-tolerant genotypes could be used in hybridization programs for the development of new high-yielding and salt-tolerant breeding lines. Further, these genotypes can be used to understand the genetic and molecular mechanism of salt tolerance in potato.

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“…Therefore, in this study, a significant reduction in biomass of Fareed-06 and Kohistan-97 was observed. Under saline conditions, less reduction in biomass or crop yield will determine the salt tolerance variety ( Hussain et al, 2021 ). The yield of a wheat crop depends upon many yield-related traits such as grain, numbers, and the size of grains.…”

Section: Discussionmentioning

confidence: 99%

Characterization of salt tolerant wheat genotypes by using morpho-physiological, biochemical, and molecular analysis

et al. 2022

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Food security is facing a major threat from salinity and there is a need to develop salt tolerant crop varieties to ensure that the demand for food from the world’s increasing population is met. Salinity mostly occurs in arid and semi-arid regions. It may cause many adverse physiological effects on plants, i.e., toxic ion accumulation, disturbed osmotic potential, and decreased crop yield. The present study aimed to investigate the morphological, physiological, biochemical, and genetic parameters of wheat genotypes under salt stress. Six wheat genotypes were screened for salt tolerance at the seedling and maturity stage. Seeds were sown at 0 and 150 mM of salinity level. Biochemical traits, i.e., shoot/root fresh and dry weight, chlorophyll a/b and total chlorophyll contents, shoot nitrogen, shoot phosphorus, proline, and carbohydrates were measured. Wheat genotypes showed a significant increase in free amino acids, shoot nitrogen, and total soluble proteins under saline conditions. Higher Na+/K+ ratio and free amino acids were estimated under 150 mM NaCl treatment in Pasban-90 and found to be the most salt-tolerant genotype. By contrast, reduced proline, total chlorophyll, and Na+/K+ ratio were found in Kohistan-97 marking it to be sensitive to stress. Expression analysis of HKTs genes was performed to validate the results of two contrasting genotypes. The differential expression of HKT2; 1 and HKT2; 3 explained the tissue and genotype specific epigenetic variations. Our findings indicated that these selected genotypes can be further used for molecular studies to find out QTLs/genes related to salinity. This suggests that, in contrasting wheat genotypes, there is a differentially induced defense response to salt stress, indicating a functional correlation between salt stress tolerance and differential expression pattern in wheat.

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Identification of novel source of salt tolerance in local bread wheat germplasm using morpho-physiological and biochemical attributes

Cited by 44 publications

References 32 publications

Assessment of Genotype Stress Tolerance as an Effective Way to Sustain Wheat Production under Salinity Stress Conditions

Assessment of Genotype Stress Tolerance as an Effective Way to Sustain Wheat Production under Salinity Stress Conditions

Salinity Stress Tolerance in Potato Cultivars: Evidence from Physiological and Biochemical Traits

Characterization of salt tolerant wheat genotypes by using morpho-physiological, biochemical, and molecular analysis

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