Silicon-induced alterations in the expression of aquaporins and antioxidant system activity in well-watered and drought-stressed oilseed rape

Saja-Garbarz, Diana; Libik-Konieczny, Marta; Fellner, Martin; Jurczyk, Barbara; Janowiak, F.

doi:10.1016/j.plaphy.2022.01.033

Cited by 19 publications

(20 citation statements)

References 41 publications

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“…However, supplementation of Si has shown an ameliorative role in canola and camelina genotypes under drought compared to NS (Tables 2-3). Results have revealed that growth attributes, including shoot and root length, shoot and root fresh weight, and shoot root dry weight were increased by (23, 13, 34, 10, 23, 20, and 20%) in canola and (30,19,32,9,20,18, and 25%) in camelina, respectively, as compared to NS. Though, the highest increase in growth attributes was shown in the treatment where Si was foliar applied @ 4.0 mM as compared to 6.0 mM and 2.0 mM.…”

Section: Growth Attributesmentioning

confidence: 94%

“…Silicon applications can ameliorate the negative impacts of abiotic stresses in plants by acting as a biochemical arbitrator activating hypersensitive reactions in the plant [28]. Its applications may lead to the polymerization of the cell wall and reparation of the cell membrane to minimize electrolyte leakage [29,30], and uphold the photosynthetic e ciency by improving the quantum productivity of functional leaf area and photosystem II [31,32]. According to reports, some cultivars of the Gramineae family that are drought-tolerant can deposit Si in endodermal tissues under drought stress [33,34].…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, polar and polymerized silicic acid creates H-bonds between hydrated silica and water in epidermal cell walls to reduce water molecule evaporation from leaf structure and maintain the plant's water status [38,39,40]. Saja-Garbarz et al [30] have reported the role of Si application to improve root water uptake by upregulating the expression to encode the genes related to aquaporin. Silicon promotes the quality of crop yield by regulating the reproductive and vegetative growth in plants.…”

Section: Introductionmentioning

confidence: 99%

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Foliar Application of Silicon Alleviates Adverse Effect of Drought Stress by improving Growth, Physiological attributes, and Antioxidant Defense of Camelina (Camelina sativa L.) and Canola (Brassica napus L.)

Shahzad¹,

Waraich²,

Saleem

et al. 2023

Preprint

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Purpose: Drought stress is a global phenomenon that poses harmful impacts on crop growth and development leading to yield losses in oilseed crops. Canola and camlina are highly sensitive to drought stress. The present study investigated the role of foliar-applied silicon to alleviate the harmful effect of drought stress in camelina and canola genotypes. Methods: Different concentrations of silicon (Si) foliar applications (NS= no spray, WS= water spray, Si-2= 2 mM Si, Si-4= 4 mM Si, Si-6= 6 mM Si) were used along with different levels of drought stress i.e., control (100% field-capacity) and drought stress (50% field-capacity), for two genotypes of camelina (611 and 618) and two canola genotypes (Super and Rachna). Results: Drought stress caused marked reductions in the growth of canola and camelina genotypes as compared with control-100% field capacity. Compared to control, drought stress decreased shoot length of canola and cameline by 25% and 28%, respectively. Physiological attributes were also decreased under drought stress as photosynthetic rate, relative water content (RWC), and chlorophyll content were decreased by 39, 38 and 42% in canola and 35, 45, and 39% in camelina, respectively, as compared to control. Drought stress was found to increase the oxidative damage in both crops. Foliar applications of Si improved the morpho-physiological and biochemical attributes in canola and camelina genotypes as compared to NS. Silicon applications at 4 mM upregulated the activities of catalase, superoxide dismutase, and peroxidase were increased by 16, 18, and 12% in canola and 17, 14, and 15% in camelina respectively, reducing the electrolyte leakage as compared to NS. Under drought stress, maximum improvements in plants performances were observed when Si was foliarly applied at 4 mM followed by 6 mM and 2 mM. Among the genotypes, canola genotype Rachna showed better performance as compared to Super, while camelina genotype 618 showed better performance as compared with 611. Conclusion: In crux, Si foliar application particularly at 4 mM improved the morpho-physiological and biochemical attributes in canola and camelina genotypes under drought-stressed conditions. The better growth and greater stress tolerance of Si-applied plants was attributed to maintaince of plant water status and photosynthetic pigments, lower oxidative damage, and higher activities of antioxidant enzymes under drought.

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Section: Growth Attributesmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Foliar Application of Silicon Alleviates Adverse Effect of Drought Stress by improving Growth, Physiological attributes, and Antioxidant Defense of Camelina (Camelina sativa L.) and Canola (Brassica napus L.)

Shahzad¹,

Waraich²,

Saleem

et al. 2023

Preprint

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“…In addition to the expression of aquaporin genes, the content of aquaporin proteins is also influenced by silicon. In rapeseed plants under drought stress, silicon application promotes the expression of BnPIP1 , BnPIP2-1-7 and BnTIP1;1 and the accumulation of aquaporins ( Gao et al., 2006 ; Saja-Garbarz et al., 2022 ). These findings show that water channel protein transport activity can be regulated at the post-transcriptional level.…”

Section: Silicon Adjusts the Water Balancementioning

confidence: 99%

The mechanism of silicon on alleviating cadmium toxicity in plants: A review

Hou

Zhang

et al. 2023

Front. Plant Sci.

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Cadmium is one of the most toxic heavy metal elements that seriously threaten food safety and agricultural production worldwide. Because of its high solubility, cadmium can easily enter plants, inhibiting plant growth and reducing crop yield. Therefore, finding a way to alleviate the inhibitory effects of cadmium on plant growth is critical. Silicon, the second most abundant element in the Earth’s crust, has been widely reported to promote plant growth and alleviate cadmium toxicity. This review summarizes the recent progress made to elucidate how silicon mitigates cadmium toxicity in plants. We describe the role of silicon in reducing cadmium uptake and transport, improving plant mineral nutrient supply, regulating antioxidant systems and optimizing plant architecture. We also summarize in detail the regulation of plant water balance by silicon, and the role of this phenomenon in enhancing plant resistance to cadmium toxicity. An in-depth analysis of literature has been conducted to identify the current problems related to cadmium toxicity and to propose future research directions.

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“…The issue addressed in this study is all the more important because according to specialists’ predictions, the coming decades will bring unavoidable alterations in the interactive effects of abiotic and biotic stresses on plants due to global climate changes ( Surówka et al., 2020 ). The results derived from research conducted on the above-ground parts of oilseed rape plants reveal that, despite being regarded as a weak silicon accumulator, silicon supplementation holds substantial significance ( Saja-Garbarz et al., 2021 , 2022 ). This supplementation exerts a positive influence on the regulation of water management and aids in alleviating the effects of oxidative stress in oilseed rape plants.…”

Section: Introductionmentioning

confidence: 99%

Silicon improves root functioning and water management as well as alleviates oxidative stress in oilseed rape under drought conditions

Saja-Garbarz,

Libik-Konieczny,

Janowiak

2024

Front. Plant Sci.

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IntroductionThe aim of our study was to examine how silicon regulates water uptake by oilseed rape roots under drought conditions and which components of the antioxidant system take part in alleviating stress-induced ROS generation in the roots.MethodsThe study analyzed mainly the changes in the roots and also some changes in the leaves of oilseed rape plants, including total silicon content, relative water content, osmotic potential, stomatal conductance, abscisic acid level, the accumulation of BnPIP1, BnPIP2-1-7 and BnTIP1 aquaporins, and the activity of antioxidant enzymes.Results and discussionIt was shown that plants growing in well-watered conditions and supplemented with silicon accumulate smaller amounts of this element in the roots and also have higher relative water content in the leaves compared to the control plants. It was demonstrated for the first time that BnTIP1 accumulation in oilseed rape roots is reduced under drought compared to wellwatered plants, and that this effect is intensified in plants supplemented with silicon. In addition, it was shown that silicon supplementation of oilseed rape increases catalase activity in the roots, which correlates with their high metabolic activity under drought and ultimately stimulates their growth. It was shown that silicon improves water balance in oilseed rape plants subjected to drought stress, and that an important role in these processes is played by tonoplast aquaporins. In addition, it was demonstrated that silicon reduces oxidative stress in roots under drought conditions by increasing the activity of catalase.

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Silicon-induced alterations in the expression of aquaporins and antioxidant system activity in well-watered and drought-stressed oilseed rape

Cited by 19 publications

References 41 publications

Foliar Application of Silicon Alleviates Adverse Effect of Drought Stress by improving Growth, Physiological attributes, and Antioxidant Defense of Camelina (Camelina sativa L.) and Canola (Brassica napus L.)

Foliar Application of Silicon Alleviates Adverse Effect of Drought Stress by improving Growth, Physiological attributes, and Antioxidant Defense of Camelina (Camelina sativa L.) and Canola (Brassica napus L.)

The mechanism of silicon on alleviating cadmium toxicity in plants: A review

Silicon improves root functioning and water management as well as alleviates oxidative stress in oilseed rape under drought conditions

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