Morphological and biochemical changes in response to salinity in sunflower (Helianthus annus L.) cultivars

Taher, Mehdi; Beyaz, Ramazan; Javani, Marieh; Gürsoy, Mehtap; Yıldız, Mustafa

doi:10.4081/ija.2018.1096

Cited by 9 publications

(2 citation statements)

References 29 publications

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“…electron and proton acceptors), causing over-reduction of photosystems and producing reactive oxygen species (ROS) which subsequently damage photosynthetic machinery ( Pinheiro and Chaves, 2011 ). This effect of salt stress on reducing the photosynthetic rate has been previously reported in both sorghum plants ( Bafeel, 2014 ; Zhou et al, 2018 ) and sunflower plants ( Kaya et al, 2019 ; Taher et al, 2018 ).…”

Section: Introductionsupporting

confidence: 78%

Silicon application induces changes C:N:P stoichiometry and enhances stoichiometric homeostasis of sorghum and sunflower plants under salt stress

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et al. 2020

Saudi Journal of Biological Sciences

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Beneficial effects of silicon (Si) on growth have been observed in some plant species, reportedly due to stoichiometric changes of C, N, and P. However, little is known about the effects on the stoichiometric relationships between C, N, and P when silicon is supplied via different modes in sorghum and sunflower plants under salt stress conditions. Therefore, the current study was performed to investigate the impact of differing modes of Si supply on shoot biomass production and C:N:P stoichiometry in sorghum and sunflower plants under salt stress. Two experiments were performed in a glass greenhouse using the strong Si-accumulator plant sorghum, as well as the intermediate type Si-accumulator sunflower, both of which were grown in pots filled with washed sand. Plant species were cultivated for 30 days in the absence or presence of salt stress (0 or 100 mM) and supplemented with one of four Si treatments: control plants (without Si), 28.6 mmol Si L −1 via foliar application, 2.0 mmol Si L −1 via nutrient solution, and combined application of foliar and nutrient solution, each group with five replications. The results revealed that supplied Si modified the C, N, and P concentrations, thereby enhancing the C:N:P stoichiometry and shoot dry matter of sorghum and sunflower plants under salt stress. Both application of Si via nutrient solution, as well as combined application via foliar and nutrient solution, increased the C:N ratio in both plant species under salt stress, but in sorghum plants decreased the C:P and N:P ratios and increased the shoot biomass production by 39%, while in sunflower plants increased the C:P and N:P ratios and increased the shoot biomass production by 24%. Our findings suggest that salt stress alleviation by Si impacts C:N:P stoichiometric relationships in a variable manner depending on the ability of the species to accumulate Si, as well as the route of Si administration.

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Section: Introductionsupporting

confidence: 78%

Silicon application induces changes C:N:P stoichiometry and enhances stoichiometric homeostasis of sorghum and sunflower plants under salt stress

Hurtado

Chiconato

Prado

et al. 2020

Saudi Journal of Biological Sciences

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“…It causes nutrient imbalance and cell injuries due to the accumulation of sodium (Na + ) and chloride (Cl − ) ions, which is the reason for the low yield under soil salinities [1,2]. Salt stress generates destabilization in the uptake, transport, and distribution of nutrients in crops, which can effectuate physiological processes, and thus decreases growth [3]. An antagonistic relation exists between K + and Na + in soil because NaCl reduces the potassium (K) concentration in the shoots and roots [4].…”

Section: Introductionmentioning

confidence: 99%

Defensive Impact of Foliar Applied Potassium Nitrate on Growth Linked with Improved Physiological and Antioxidative Activities in Sunflower (Helianthus annuus L.) Hybrids Grown under Salinity Stress

et al. 2021

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Salt stress is recognized to negatively influence the fundamental processes in plants regarding growth and yield. The sunflower (Helianthus annuus L.) is considered an important industrial crop because of the good quality of oil it produces that can be used for cooking purposes. The exogenous application of potassium (K) has been reported to enhance abiotic resistance and increase yield in crops. Here, we explored the impact of foliar-applied K at 500 ppm on the physiological and biochemical traits, antioxidant activities, and growth attributes of sunflower grown under salt stress (140 mM NaCl). The findings indicated that salinity stress adversely affected photosynthesis and various gas exchange characteristics. Foliar applied K markedly improved the stomatal conductance, transpiration rate, water use efficiency, CO2 assimilation rate, total soluble proteins, chlorophyll pigments, and upregulated antioxidant system, which are responsible for the healthy growth of sunflower hybrids grown under salinity stress. The shoot and root lengths, plant fresh and dry weights, and achene weight were significantly increased by K application. Overall, foliar applied K significantly improved all of the aforementioned attributes and can attenuate the deleterious influences of salinity stress in sunflower.

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Silicon Alleviates Sodium Toxicity in Sorghum and Sunflower Plants by Enhancing Ionic Homeostasis in Roots and Shoots and Increasing Dry Matter Accumulation

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Morphological and biochemical changes in response to salinity in sunflower (Helianthus annus L.) cultivars

Cited by 9 publications

References 29 publications

Silicon application induces changes C:N:P stoichiometry and enhances stoichiometric homeostasis of sorghum and sunflower plants under salt stress

Silicon application induces changes C:N:P stoichiometry and enhances stoichiometric homeostasis of sorghum and sunflower plants under salt stress

Defensive Impact of Foliar Applied Potassium Nitrate on Growth Linked with Improved Physiological and Antioxidative Activities in Sunflower (Helianthus annuus L.) Hybrids Grown under Salinity Stress

Silicon Alleviates Sodium Toxicity in Sorghum and Sunflower Plants by Enhancing Ionic Homeostasis in Roots and Shoots and Increasing Dry Matter Accumulation

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