Effect of Salt Stress on Different Growth and Biochemical Attributes in Two Canola (<i>Brassica napus</i>L.) Cultivars

Rasheed, Rizwan; Ashraf, Muhammad Arslan; Parveen, Sumaira; Iqbal, Muhammad; Hussain, İqbal

doi:10.1080/00103624.2013.867045

Cited by 25 publications

(17 citation statements)

References 29 publications

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“…Most studies report that high external NaCl concentrations result in intense competition between ions for absorption at the site of ion uptake, especially between Na + and K + ions, due to the similarity in the physio-chemical properties of both ions, which does not act in favor of metabolic functions essential for adaptation to salt stress (Kaya et al, 2007; Rasheed et al, 2014; Ashraf and Ashraf, 2015). Therefore, salt tolerance in most genotypes coincides with higher affinity for K + over Na + in ion uptake.…”

Section: Discussionmentioning

confidence: 99%

Comparative Performance of Multivariable Agro-Physiological Parameters for Detecting Salt Tolerance of Wheat Cultivars under Simulated Saline Field Growing Conditions

et al. 2017

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Field-based trials are crucial for successfully achieving the goals of plant breeding programs aiming to screen and improve the salt tolerance of crop genotypes. In this study, simulated saline field growing conditions were designed using the subsurface water retention technique (SWRT) and three saline irrigation levels (control, 60, and 120 mM NaCl) to accurately appraise the suitability of a set of agro-physiological parameters including shoot biomass, grain yield, leaf water relations, gas exchange, chlorophyll fluorescence, and ion accumulation as screening criteria to establish the salt tolerance of the salt-tolerant (Sakha 93) and salt-sensitive (Sakha 61) wheat cultivars. Shoot dry weight and grain yield per hectare were substantially reduced by salinity, but the reduction was more pronounced in Sakha 61 than in Sakha 93. Increasing salinity stress caused a significant decrease in the net photosynthesis rate and stomatal conductance of both cultivars, although their leaf turgor pressure increased. The accumulation of toxic ions (Na+ and Cl-) was higher in Sakha 61, but the accumulation of essential cations (K+ and Ca2+) was higher in Sakha 93, which could be the reason for the observed maintenance of the higher leaf turgor of both cultivars in the salt treatments. The maximum quantum PSII photochemical efficiency (Fv/Fm) and the PSII quantum yield (ΦPSII) decreased with increasing salinity levels in Sakha 61, but they only started to decline at the moderate salinity condition in Sakha 93. The principle component analysis successfully identified the interrelationships between all parameters. The parameters of leaf water relations and toxic ion concentrations were significantly related to each other and could identify Sakha 61 at mild and moderate salinity levels, and, to a lesser extent, Sakha 93 at the moderate salinity level. Both cultivars under the control treatment and Sakha 93 at the mild salinity level were identified by most of the other parameters. The variability in the angle between the vectors of parameters explained which parameters could be used as individual, interchangeable, or supplementary screening criteria for evaluating wheat salt tolerance under simulated field conditions.

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Section: Discussionmentioning

confidence: 99%

Comparative Performance of Multivariable Agro-Physiological Parameters for Detecting Salt Tolerance of Wheat Cultivars under Simulated Saline Field Growing Conditions

et al. 2017

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“…Plants differing in salinity tolerance could exhibit a varied extent of lipid peroxidation. Increase in lipid peroxidation, expressed by MDA content, is normally significantly higher in salinity-sensitive cultivars than in salinitytolerant ones, as for instance, in Brassica napus (Rasheed et al 2014). The lower level of TBARS in salinity (50 mM)-exposed B. juncea cv.…”

Section: Drought and Salinitymentioning

confidence: 98%

Lipids and proteins—major targets of oxidative modifications in abiotic stressed plants

Anjum

Sofo

Scopa

et al. 2014

Environ Sci Pollut Res

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285

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Stress factors provoke enhanced production of reactive oxygen species (ROS) in plants. ROS that escape antioxidant-mediated scavenging/detoxification react with biomolecules such as cellular lipids and proteins and cause irreversible damage to the structure of these molecules, initiate their oxidation, and subsequently inactivate key cellular functions. The lipid- and protein-oxidation products are considered as the significant oxidative stress biomarkers in stressed plants. Also, there exists an abundance of information on the abiotic stress-mediated elevations in the generation of ROS, and the modulation of lipid and protein oxidation in abiotic stressed plants. However, the available literature reflects a wide information gap on the mechanisms underlying lipid- and protein-oxidation processes, major techniques for the determination of lipid- and protein-oxidation products, and on critical cross-talks among these aspects. Based on recent reports, this article (a) introduces ROS and highlights their relationship with abiotic stress-caused consequences in crop plants, (b) examines critically the various physiological/biochemical aspects of oxidative damage to lipids (membrane lipids) and proteins in stressed crop plants, (c) summarizes the principles of current technologies used to evaluate the extent of lipid and protein oxidation, (d) synthesizes major outcomes of studies on lipid and protein oxidation in plants under abiotic stress, and finally, (e) considers a brief cross-talk on the ROS-accrued lipid and protein oxidation, pointing to the aspects unexplored so far.

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“…In the leaves of five salt-stressed canola cultivars, ROSscavenging enzymes (Superoxide dismutase, SOD; catalase, CAT; Glutathione reductase; Monodehydroascorbate reductase), as well as reduced glutathione concentration were higher than in unstressed leaves (Bybordi et al, 2010c). Even though salt increased levels of MDA, hydrogen peroxide (H 2 O 2 ) and phenolics were observed in a salt-sensitive canola cultivar, low levels of MDA in salt-tolerant canola plants accumulate high cellular levels of H 2 O 2 (Rasheed et al, 2014). In vitro plantlets grown in the presence of NaCl and SA showed increased levels of chl, carotenoids and flavonoids, proline and soluble protein (Razavizadeh, 2015).…”

Section: +mentioning

confidence: 99%

Drought and salinity stress management for higher and sustainable canola (Brassica napus L.) production: a critical review

Sabagh¹,

Hossain²,

Barutçular³

et al. 2019

Aust J Crop Sci

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The oil of canola (Brassica napus L.), a globally important major oilseed crop, is used for salads, frying, the development of margarines, shortenings, and other food products. However, the growth and yield of canola are mainly restricted by drought and salinity, which can become acute in climate change. The exogenous application of some antioxidants has been shown to enhance tolerance to drought and salinity in select plants. Therefore, a thorough understanding of the effect of drought and salinity stress is crucial for understanding their adverse effect on canola cultivation and to establish useful strategies to maximize oil productivity. Given the economic importance of this crop, we reviewed studies within the extensive canola literature to assess the adverse effects of abiotic stresses, with a special emphasis on drought, water deficit and salinity, and how these stresses impact its growth and productivity in a bid to determine the role that antioxidants might play in alleviating the adverse effects of environmental stresses. This review notes how the productivity of canola tends to decrease under different abiotic stresses due to their adverse effect on morphological, physiological and biochemical processes, including lowered or reduced leaf area, leaf relative water content, stability of cell membranes, photosynthetic capacity, stomatal conductance, damage to chlorophyll and the production of reactive oxygen species. In addition, this review also discusses management strategies that would allow researchers or farmers to mitigate salinity and drought stress by using compatible solutes, nutrient management or other means to maximize canola yield. The application of antioxidants to soil, in combination with essential nutrients, alongside other management strategies, may assist in alleviating the harmful effects of environmental stresses in canola production.

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Effect of Salt Stress on Different Growth and Biochemical Attributes in Two Canola (Brassica napusL.) Cultivars

Cited by 25 publications

References 29 publications

Comparative Performance of Multivariable Agro-Physiological Parameters for Detecting Salt Tolerance of Wheat Cultivars under Simulated Saline Field Growing Conditions

Comparative Performance of Multivariable Agro-Physiological Parameters for Detecting Salt Tolerance of Wheat Cultivars under Simulated Saline Field Growing Conditions

Lipids and proteins—major targets of oxidative modifications in abiotic stressed plants

Drought and salinity stress management for higher and sustainable canola (Brassica napus L.) production: a critical review

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