Reactive Sulfur Species‐Key Regulators of Abiotic Stress Tolerance in Plants

Nawaz, Fahim; Majeed, Sadia; Ahmad, Khawaja Shafique; Aqib, Muhammad; Shehzad, Muhammad; Aurangzaib, Muhammad; Shahbaz, Muhammad

doi:10.1002/9781119468677.ch30

Cited by 9 publications

(6 citation statements)

References 174 publications

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“…Deficiency of S in oilseeds is expected to intensify in coming years due to decreased supply of S fertilizers, cultivation of large number of crops in one season, and illogical use of plants for feed and fuel purpose. Moreover, erosion and leaching have further degraded the soil contributing to S deficiency in soils (Nawaz et al 2019). During the past few decades, the protective role of S-containing compounds against abiotic stresses has been investigated in detail (Hasanuzzaman et al 2018).…”

Section: Discussionmentioning

confidence: 99%

“…On the contrary, the availability of S promotes the biosynthesis of proteins and chlorophyll (Fatma et al 2014), regulates antioxidant enzymes (Usmani et al 2020), and enhances the activity of photosynthetic apparatus under challenging environmental conditions including drought (Lee et al 2016). Also, the requirement for S-containing metabolites for cellular metabolic reactions such as the biosynthesis of abscisic acid (ABA) and subsequent stomatal closure implies the importance of S in plant growth under water limitations (Batool et al 2018;Nawaz et al 2019). Hasanuzzaman et al (2018) suggested that the presence of SO 4 2− influences nutrient homeostasis and has a profound effect on the availability of essential nutrients in plants exposed to extreme environments.…”

Section: Introductionmentioning

confidence: 99%

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Sulfate-Based Fertilizers Regulate Nutrient Uptake, Photosynthetic Gas Exchange, and Enzymatic Antioxidants to Increase Sunflower Growth and Yield Under Drought Stress

Shafiq

Nawaz

Majeed

et al. 2021

J Soil Sci Plant Nutr

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The challenging impact of drought to agricultural productivity requires the adoption of mitigation strategies with a better understanding of underlying mechanisms responsible for drought tolerance. The present study aimed at investigating the effects of sulfur-based fertilizers on mitigation of drought stress in sunflower. Sulfate-containing fertilizers, viz., ammonium sulfate, zinc sulfate, magnesium sulfate, potassium sulfate, and gypsum, were initially evaluated at two different rates (10 and 20 mg kg−1 soil equivalent to 20 and 40 kg ha−1, respectively) for nutrient uptake and growth-promoting traits in sunflower seedlings (cv. Hysun-33). The best performing fertilizer (gypsum) was then selected to evaluate the response of sunflower under drought stress imposed at flowering stage for three weeks (25–30% water holding capacity). Results indicated significant amelioration of drought stress with higher activity of photosynthetic apparatus, upregulation of antioxidative enzymes, and increased achene yield by gypsum application. In comparison to control, gypsum-treated plants (20 mg kg−1 soil) exhibited higher water status (32%), leaf photosynthetic rate (29%), transpiration rate (67%), and stomatal conductance (118%) under drought stress. The antioxidant enzyme activities of catalase, guaiacol peroxidase, and superoxide dismutase were also increased by 67%, 62%, and 126%, respectively, resulting in higher achene yield (19%) under water-deficit conditions. This study indicates that the application of sulfur-based fertilizers (gypsum) can be used to induce drought tolerance and obtain high sunflower yields under drought stress, and furthermore, it is a cost-effective strategy resulting in high benefit–cost ratio with respect to no gypsum application.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sulfate-Based Fertilizers Regulate Nutrient Uptake, Photosynthetic Gas Exchange, and Enzymatic Antioxidants to Increase Sunflower Growth and Yield Under Drought Stress

Shafiq

Nawaz

Majeed

et al. 2021

J Soil Sci Plant Nutr

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“…Apart from ROS, other reactive species are produced in plant cells during adverse environmental conditions, including RNS, RSS, and RCS ( Figure 6) [146,226,232]. All these reactive species are involved in a molecular cross-talk and have a particular role in cellular signaling cascades [23].…”

Section: Cross-talk Of Reactive Nitrogen Sulfur and Carbonyl Speciementioning

confidence: 99%

Reactive Oxygen Species and Antioxidant Defense in Plants under Abiotic Stress: Revisiting the Crucial Role of a Universal Defense Regulator

et al. 2020

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Global climate change and associated adverse abiotic stress conditions, such as drought, salinity, heavy metals, waterlogging, extreme temperatures, oxygen deprivation, etc., greatly influence plant growth and development, ultimately affecting crop yield and quality, as well as agricultural sustainability in general. Plant cells produce oxygen radicals and their derivatives, so-called reactive oxygen species (ROS), during various processes associated with abiotic stress. Moreover, the generation of ROS is a fundamental process in higher plants and employs to transmit cellular signaling information in response to the changing environmental conditions. One of the most crucial consequences of abiotic stress is the disturbance of the equilibrium between the generation of ROS and antioxidant defense systems triggering the excessive accumulation of ROS and inducing oxidative stress in plants. Notably, the equilibrium between the detoxification and generation of ROS is maintained by both enzymatic and nonenzymatic antioxidant defense systems under harsh environmental stresses. Although this field of research has attracted massive interest, it largely remains unexplored, and our understanding of ROS signaling remains poorly understood. In this review, we have documented the recent advancement illustrating the harmful effects of ROS, antioxidant defense system involved in ROS detoxification under different abiotic stresses, and molecular cross-talk with other important signal molecules such as reactive nitrogen, sulfur, and carbonyl species. In addition, state-of-the-art molecular approaches of ROS-mediated improvement in plant antioxidant defense during the acclimation process against abiotic stresses have also been discussed.

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“…For example, abscisic acid (ABA) induced closure of stomata is directly linked with S metabolism in maize 13 . The increased S demand in drought-stressed plants reflects the regulatory importance of S in ABA signalling and detoxification of reactive oxygen species (ROS) 15 . Additionally, S metabolism is linked to polyamine and ethylene through salvage pathway involved in maize response to drought stress 3,11 .…”

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confidence: 99%

Sulfate-mediated Drought Tolerance in Maize Involves Regulation at Physiological and Biochemical Levels

Usmani

Nawaz

Majeed³

et al. 2020

Sci Rep

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Restriction in nutrient acquisition is one of the primary causes for reduced growth and yield in water deficient soils. Sulfur (S) is an important secondary macronutrient that interacts with several stress metabolites to improve performance of food crops under various environmental stresses including drought. Increased S supply influences uptake and distribution of essential nutrients to confer nutritional homeostasis in plants exposed to limited water conditions. The regulation of S metabolism in plants, resulting in synthesis of numerous S-containing compounds, is crucial to the acclimation response to drought stress. Two different experiments were laid out in semi-controlled conditions to investigate the effects of different S sources on physiological and biochemical mechanisms of maize (Zea mays L. cv. P1574). Initially, the rate of S application in maize was optimized in terms of improved biomass and nutrient uptake. The maize seedlings were grown in sandy loam soil fertigated with various doses (0, 15, 30 and 45 kg ha −1) of different S fertilizers viz. K 2 So 4 , feSo 4 , cuSo 4 and na 2 So 4. The optimized S dose of each fertilizer was later tested in second experiment to determine its role in improving drought tolerance of maize plants. A marked effect of S fertilization was observed on biomass accumulation and nutrients uptake in maize. In addition, the optimized doses significantly increased the gas exchange characteristics and activity of antioxidant enzymes to improve yield of maize. Among various S sources, application of K 2 So 4 resulted in maximum photosynthetic rate (43%), stomatal conductance (98%), transpiration rate (61%) and sub-stomatal conductance (127%) compared to no S supply. Moreover, it also increased catalase, guaiacol peroxidase and superoxide dismutase activities by 55, 87 and 65%, respectively that ultimately improved maize yield by 33% with respect to control under water deficit conditions. These results highlight the importance of S fertilizers that would likely be helpful for farmers to get better yield in water deficient soils. Maize (Zea mays L.) is one of the major cereal crops that provide food for humans and feed for livestock. The demand for maize seed has increased significantly during past few decades due to its consumption in poultry feed and wet milling industry. The importance of maize as a food crop is well recognized and is used as a staple food in many parts of the world 1. Maize seed is an abundant source of energy as 100 g seed provides 365 kilocalories of energy 2. However, it is an extensive nutrient crop and excessive use of fertilizers to obtain high yield has resulted in the depletion of nutrients particularly sulfur (S) in soils 3. Moreover, water shortage due to climate change may induce further losses in maize production in future. Adaptation of maize to limited water conditions has received great interest from farmers, researchers and policy makers considering its importance in nutritional food security. Since maize requires large quantities of water to...

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Reactive Sulfur Species‐Key Regulators of Abiotic Stress Tolerance in Plants

Cited by 9 publications

References 174 publications

Sulfate-Based Fertilizers Regulate Nutrient Uptake, Photosynthetic Gas Exchange, and Enzymatic Antioxidants to Increase Sunflower Growth and Yield Under Drought Stress

Sulfate-Based Fertilizers Regulate Nutrient Uptake, Photosynthetic Gas Exchange, and Enzymatic Antioxidants to Increase Sunflower Growth and Yield Under Drought Stress

Reactive Oxygen Species and Antioxidant Defense in Plants under Abiotic Stress: Revisiting the Crucial Role of a Universal Defense Regulator

Sulfate-mediated Drought Tolerance in Maize Involves Regulation at Physiological and Biochemical Levels

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