Impact of Foliar Application with Salicylic  Acid on Biochemical Characters of Canola Plants under Cold Stress Condition

Keshavarz, Hamed; Sanavy, Seyed Ali Mohammad Modarres; Moghadam, Ramin Sadegh Ghol

doi:10.15835/nsb819766

Cited by 19 publications

(13 citation statements)

References 27 publications

(44 reference statements)

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“…The increase of SSC content could promote the viscosity, elasticity, and cell sap concentration of protoplasts, thereby improving the water absorption and water retention capacity of crops (Wang et al, 2016). Osmotic regulation contributes to cell development and promotes plant growth under drought stress (Keshavarz et al, 2016). In this study, after drought stress, the accumulation of SSC content in TY2 and DY2 was significantly increased.…”

Section: Responses Of Physiological Indicators To Drought Stress At the Seedling Stage In Oatmentioning

confidence: 52%

Important Physiological Changes Due to Drought Stress on Oat

Xie

Chen

et al. 2021

Front. Ecol. Evol.

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As temperatures rise and water availability decreases, the water decit is gaining attention regarding future agricultural production. Drought stress is a global issue and adversely affects the productivity of different crops. In this study, drought-tolerant varieties of oats were screened to determine drought-tolerant varieties that may be employed in drought-prone areas to achieve sustainable development and mitigate the impact of climate change. To do so, the growth and stress adaptive mechanism of 15 domestic and overseas oat cultivars at the seedling stage were analyzed. Water stress was simulated using 20% polyethylene glycol (PEG-6000). The results showed that the soluble protein content and superoxide dismutase activity of variety DY2 significantly increased under drought stress, whereas the photochemical efficiency and relative water content decreased slightly. The relative electrical conductivity (REC) and drought damage index of the QH444 and DY2 varieties increased the least. The peroxidase content of Q1 and DY2 significantly increased, and the catalase activity of Q1, QH444, and DY2 also substantially increased. Principal component analysis revealed that nine physiological and biochemical parameters were transformed into three independent comprehensive indexes. The comprehensive evaluation results showed that DY2, LN, and Q1 exhibited a strong drought resistance capacity and could be used as a reference material for a drought-resistant oat breeding program. The gray correlation analysis also indicated that Fv/Fm, chlorophyll, REC, and malondialdehyde could be used as key indexes for evaluating the drought resistance of oat.

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Section: Responses Of Physiological Indicators To Drought Stress At the Seedling Stage In Oatmentioning

confidence: 52%

Important Physiological Changes Due to Drought Stress on Oat

Xie

Chen

et al. 2021

Front. Ecol. Evol.

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“…The enzyme peroxidase is used to collect reactive oxygen species in order to prevent excessive damage to the active plasmid membrane. Superoxide dismutase enzyme regulates the concentration of hydrogen peroxide and superoxide in the cell and is an important factor in the plant's defense system against antioxidant stress . Hassanpour and Niknam stated that drought stress increased the activity of ascorbate peroxidase, superoxide dismutase, and peroxidase.…”

Section: Resultsmentioning

confidence: 99%

“…Superoxide dismutase enzyme regulates the concentration of hydrogen peroxide and superoxide in the cell and is an important factor in the plant's defense system against antioxidant stress. [38] Hassanpour and Niknam [8] stated that drought stress increased the activity of ascorbate peroxidase, superoxide dismutase, and peroxidase. Mallick et al [39] observed that proline increased in some wheat genotypes due to drought stress.…”

Section: Effect Of Drought Stress On Production Of Proline Catalasementioning

confidence: 99%

Effect of Drought Stress on Certain Morphological and Physiological Characteristics of a Resistant and a Sensitive Canola Cultivar

Khodabin

Tahmasebi‐Sarvestani

Rad

et al. 2020

Chemistry & Biodiversity

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Water stress is one of the main abiotic factors that reduces plant growth, mainly due to high evaporative demand and low water availability. In order to evaluate the effects of drought stress on certain morphological and physiological characteristics of two canola cultivars, we conducted a factorial experiment based on a completely randomized design. The findings show that drought stress exacerbations result in the plant's response to stress due to increased canola resistance caused by changes in plant pigments, proline, catalase, ascorbate peroxidase, peroxidase, superoxide dismutase and malondialdehyde, glucose, galactose, rhamnose and xylose. These in turn ultimately influence the morphological characteristics of canola. Drought stress reduces the concentration of carotenoids, chlorophyll a, chlorophyll b, total chlorophylls; however, glucose, galactose, rhamnose, xylose, proline, catalase, ascorbate peroxidase, peroxidase, superoxide dismutase, malondialdehyde (in leaves and roots) and the chlorophyll a and b ratios were increased. Reduction of plant height, stem height, root length, fresh and dry weight of canola treated with 300 g/l PEG compared to non‐treatment were 0.264, 0.236, 0.394, 0.183 and 0.395, respectively. From the two canola cultivars, the morphological characteristics of the NIMA increased compared to the Ks7 cultivar. Interaction effects of cultivar and drought stress showed that NIMA cultivar without treatment had the highest number of morphological characteristics such as carotenoid concentration, chlorophyll a, chlorophyll b, total chlorophylls a and b, whereas the cultivar with 300 g/l PEG (drought stress) had the highest amount of proline, malondialdehyde, soluble sugars and enzymes in leaves and roots. Increasing activity of oxidative enzymes and soluble sugars in canola under drought stress could be a sign of their relative tolerance to drought stress.

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“…Plant hormones can play vital roles in plant growth and development processes response to various abiotic and biotic stress (Shaki et al 2019). Plant hormones have been used to improve the growth and development of different crop species (Keshavarz et al 2016;Dotto & Neumann Silva 2017;Shaki et al 2020). The Gibberellic acid (GA3) plays essential roles in seed germination, stem elongation, leaf expansion and reproductive development (Khan & Chaudhry 2006).…”

Section: Introductionmentioning

confidence: 99%

Foliar Application of Humic Acid and Some Exo-and Endophytic Growth Hormones on Yield, Yield Components and Fatty Acid Composition in Safflower (Carthamus tinctorius L.) under Drought Stress

Heydari¹,

Moghadam²,

Behjou³

et al. 2021

Tarım Bilimleri Dergisi

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to study the impact of drought stress and foliar application of some hormones on the safflower growth. The drought stress was induced at three levels and considered as main plots. Irrigating after 75% water depletion was considered to be normal irrigation (control), irrigating after 60 and 45% water depletion, defined as mild and severe drought stress, respectively. The foliar application of humic acid (HA), salicylic acid (SA), Gibberellic acid (GA3), ascorbic acid (AA), water, and the non-foliar application was considered as sub-plots. The main effect of irrigation regimes was significant on seed yield, oil yield, palmitic acid, and water use efficiency (WUE). Also, the main effect of foliar applications was significant for seed yield, oil yield, stearic acid, and WUE. Normal irrigation produced the maximum oil yield (2270 kg ha -1 ) that was decreased by 25.9% and 37.1% under mild and severe stress regimes, respectively. The maximum and minimum oil yields were produced by the application of SA and non-foliar treatment with average values 1970 and 1357 kg ha -1 , respectively. Although the palmitic acid content was enhanced under the drought stress conditions, oleic acid content was significantly decreased in such conditions. The current findings suggest that the foliar application of SA can be recommended when optimal water supply was applied to increase the quality and quantity of safflower oilseed.

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Impact of Foliar Application with Salicylic Acid on Biochemical Characters of Canola Plants under Cold Stress Condition

Cited by 19 publications

References 27 publications

Important Physiological Changes Due to Drought Stress on Oat

Important Physiological Changes Due to Drought Stress on Oat

Effect of Drought Stress on Certain Morphological and Physiological Characteristics of a Resistant and a Sensitive Canola Cultivar

Foliar Application of Humic Acid and Some Exo-and Endophytic Growth Hormones on Yield, Yield Components and Fatty Acid Composition in Safflower (Carthamus tinctorius L.) under Drought Stress

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