Hydrogen sulfide (H2S) and potassium (K+) synergistically induce drought stress tolerance through regulation of H+-ATPase activity, sugar metabolism, and antioxidative defense in tomato seedlings

Siddiqui, Manzer H.; Khan, Md. Raisuddin; Bhatla, Satish C.; Alamri, Saud; Basahi, Riyadh A.; Amri, Abdullah Al; Alsubaie, Qasi D.; Almunqedhi, Bander; Ali, Hayssam M.; Almohisen, None Ibrahim A. A.

doi:10.1007/s00299-021-02731-3

Cited by 51 publications

(20 citation statements)

References 131 publications

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“…H + -ATPase is a key enzyme that regulates plants’ physiological and molecular processes by maintaining the cytosolic pH and membrane-associated electrochemical gradient ( Gildensoph and Briskin, 1990 ). PM H + -ATPase activates secondary ion transport across membranes, thereby regulating several processes, such as cell growth, nutrient uptake, intracellular pH regulation, and stomatal opening ( Falhof et al, 2016 ; Zhang et al, 2017 ; Siddiqui et al, 2021b ). The application of NaHS and Si, alone or in combination, increased PM-H + -ATPase activity in the leaves of chickpea plants under Cr VI stress.…”

Section: Discussionmentioning

confidence: 99%

Hydrogen Sulfide and Silicon Together Alleviate Chromium (VI) Toxicity by Modulating Morpho-Physiological and Key Antioxidant Defense Systems in Chickpea (Cicer arietinum L.) Varieties

Singh

Siddiqui

et al. 2022

Front. Plant Sci.

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Extensive use of chromium (Cr) in anthropogenic activities leads to Cr toxicity in plants causing serious threat to the environment. Cr toxicity impairs plant growth, development, and metabolism. In the present study, we explored the effect of NaHS [a hydrogen sulfide; (H2S), donor] and silicon (Si), alone or in combination, on two chickpea (Cicer arietinum) varieties (Pusa 2085 and Pusa Green 112), in pot conditions under Cr stress. Cr stress increased accumulation of Cr reduction of the plasma membrane (PM) H+-ATPase activity and decreased in photosynthetic pigments, essential minerals, relative water contents (RWC), and enzymatic and non-enzymatic antioxidants in both the varieties. Exogenous application of NaHS and Si on plants exposed to Cr stress mitigated the effect of Cr and enhanced the physiological and biochemical parameters by reducing Cr accumulation and oxidative stress in roots and leaves. The interactive effects of NaHS and Si showed a highly significant and positive correlation with PM H+-ATPase activity, photosynthetic pigments, essential minerals, RWC, proline content, and enzymatic antioxidant activities (catalase, peroxidase, ascorbate peroxidase, dehydroascorbate reductase, superoxide dismutase, and monodehydroascorbate reductase). A similar trend was observed for non-enzymatic antioxidant activities (ascorbic acid, glutathione, oxidized glutathione, and dehydroascorbic acid level) in leaves while oxidative damage in roots and leaves showed a negative correlation. Exogenous application of NaHS + Si could enhance Cr stress tolerance in chickpea and field studies are warranted for assessing crop yield under Cr-affected area.

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Section: Discussionmentioning

confidence: 99%

Hydrogen Sulfide and Silicon Together Alleviate Chromium (VI) Toxicity by Modulating Morpho-Physiological and Key Antioxidant Defense Systems in Chickpea (Cicer arietinum L.) Varieties

Singh

Siddiqui

et al. 2022

Front. Plant Sci.

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“…Scavenging H 2 S reduced antioxidant enzyme activity while increasing H 2 O 2 and MDA levels, which depicted the positive role of H 2 S against drought tolerance (Li et al 2021b). Endogenous H 2 S combined with K + in tomato regulates H + -ATPase activity and redox homeostasis and modifies drought stress tolerance in tomato seedlings (Siddiqui et al 2021). The antioxidant capacity of rice seedlings was reported to be improved by NaHS application that maintained the redox balance.…”

Section: The Role Of H 2 S-mediated Antioxidant Defence In Enhancing ...mentioning

confidence: 91%

“…Drought stress significantly increased the production of NO and H 2 S in wheat seedlings, where H 2 S functions upstream of NO in regulating the AsA-GSH cycle (Shan et al 2020). In a recent study, crosstalk between H 2 S and K + was significant for modulation of drought resilience in tomato seedlings, where exogenous K + enhanced H 2 S biosynthesis and effectively neutralized water deficit effects of 15% PEG (polyethylene glycol) by regulating sugar metabolism, H + -ATPase activity and redox homeostasis (Siddiqui et al 2021). See Table 1 for further key examples of H 2 S-induced drought tolerance in different crop plants.…”

Section: Drought Stressmentioning

confidence: 99%

“…Endogenous H 2 S combined with K + in tomato regulates H + ‐ATPase activity and redox homeostasis and modifies drought stress tolerance in tomato seedlings (Siddiqui et al . 2021). The antioxidant capacity of rice seedlings was reported to be improved by NaHS application that maintained the redox balance.…”

Section: The Role Of H2s‐mediated Antioxidant Defence In Enhancing Ab...mentioning

confidence: 99%

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Hydrogen sulfide: an emerging component against abiotic stress in plants

et al. 2021

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As a result of climate change, abiotic stresses are the most common cause of crop losses worldwide. Abiotic stresses significantly impair plants' physiological, biochemical, molecular and cellular mechanisms, limiting crop productivity under adverse climate conditions. However, plants can implement essential mechanisms against abiotic stressors to maintain their growth and persistence under such stressful environments. In nature, plants have developed several adaptations and defence mechanisms to mitigate abiotic stress. Moreover, recent research has revealed that signalling molecules like hydrogen sulfide (H2S) play a crucial role in mitigating the adverse effects of environmental stresses in plants by implementing several physiological and biochemical mechanisms. Mainly, H2S helps to implement antioxidant defence systems, and interacts with other molecules like nitric oxide (NO), reactive oxygen species (ROS), phytohormones, etc. These molecules are well‐known as the key players that moderate the adverse effects of abiotic stresses. Currently, little progress has been made in understanding the molecular basis of the protective role of H2S; however, it is imperative to understand the molecular basis using the state‐of‐the‐art CRISPR‐Cas gene‐editing tool. Subsequently, genetic engineering could provide a promising approach to unravelling the molecular basis of stress tolerance mediated by exogenous/endogenous H2S. Here, we review recent advances in understanding the beneficial roles of H2S in conferring multiple abiotic stress tolerance in plants. Further, we also discuss the interaction and crosstalk between H2S and other signal molecules; as well as highlighting some genetic engineering‐based current and future directions.

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“…Drought tolerance is a complex quantitative trait ( Wu et al, 2022 ), and plants deploy multiple strategies to combat drought ( Ahmad et al, 2019 ). These include osmoprotectants, enzymatic and non-enzymatic antioxidants, biomarkers, and secondary metabolism-related enzymes ( Zeeshan et al, 2020 ; Siddiqui et al, 2021 ; Salam et al, 2022 ).…”

Section: Introductionmentioning

confidence: 99%

Improving the effects of drought priming against post-anthesis drought stress in wheat (Triticum aestivum L.) using nitrogen

Ullah

Tian

et al. 2022

Front. Plant Sci.

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Water and nitrogen (N) deficiencies are the major limitations to crop production, particularly when they occur simultaneously. By supporting metabolism, even when tissue water capacity is lower, nitrogen and priming may reduce drought pressure on plants. Therefore, the current study investigates the impact of nitrogen and priming on wheat to minimize post-anthesis drought stress. Plant morphology, physiology, and biochemical changes were observed before, during, and after stress at the post-anthesis stage. The plants were exposed to three water levels, i.e., well watering (WW), water deficit (WD), and priming at jointing and water deficit (PJWD) at the post-anthesis stage, and two different nitrogen levels, i.e., N180 (N1) and N300 (N2). Nitrogen was applied in three splits, namely, sowing, jointing, and booting stages. The results showed that the photosynthesis of plants with N1 was significantly reduced under drought stress. Moreover, drought stress affected chlorophyll (Chl) fluorescence and water-related parameters (osmotic potential, leaf water potential, and relative water content), grain filling duration (GFD), and grain yield. In contrast, PJWD couple with high nitrogen treatment (N300 kg ha–1) induced the antioxidant activity of peroxidase (37.5%), superoxide dismutase (29.64%), and catalase (65.66%) in flag leaves, whereas the levels of hydrogen peroxide (H2O2) and superoxide anion radical (O2–) declined by 58.56 and 66.64%, respectively. However, during the drought period, the primed plants under high nitrogen treatment (N300 kg ha–1) maintained higher Chl content, leaf water potential, and lowered lipid peroxidation (61%) (related to higher activities of ascorbate peroxidase and superoxide dismutase). Plants under high nitrogen treatment (N300 kg ha–1) showed deferred senescence, improved GFD, and grain yield. Consequently, the research showed that high nitrogen dose (N300 kg ha–1) played a synergistic role in enhancing the drought tolerance effects of priming under post-anthesis drought stress in wheat.

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Hydrogen sulfide (H2S) and potassium (K+) synergistically induce drought stress tolerance through regulation of H+-ATPase activity, sugar metabolism, and antioxidative defense in tomato seedlings

Cited by 51 publications

References 131 publications

Hydrogen Sulfide and Silicon Together Alleviate Chromium (VI) Toxicity by Modulating Morpho-Physiological and Key Antioxidant Defense Systems in Chickpea (Cicer arietinum L.) Varieties

Hydrogen Sulfide and Silicon Together Alleviate Chromium (VI) Toxicity by Modulating Morpho-Physiological and Key Antioxidant Defense Systems in Chickpea (Cicer arietinum L.) Varieties

Hydrogen sulfide: an emerging component against abiotic stress in plants

Improving the effects of drought priming against post-anthesis drought stress in wheat (Triticum aestivum L.) using nitrogen

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