Potentiality of Sulphur-Containing Compounds in Salt Stress Tolerance

Khan, M. Iqbal R.; Asgher, Mohd; Iqbal, Noushina; Khan, Nafees A.

doi:10.1007/978-1-4614-4747-4_17

Cited by 38 publications

(24 citation statements)

References 200 publications

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“…Cysteine is the final product of S-assimilation. It is the precursor and S donor for the majority of other organic S compounds present in plants 14,76 such as Met, SAM, S-methyl methionine, [Fe/S] clusters, hormones, vitamins and enzyme cofactors. 76 The main pathway for ethylene biosynthesis comes from Met.…”

Section: Ethylene Cross-talk Associated With Sulfurmentioning

confidence: 99%

“…It is the precursor and S donor for the majority of other organic S compounds present in plants 14,76 such as Met, SAM, S-methyl methionine, [Fe/S] clusters, hormones, vitamins and enzyme cofactors. 76 The main pathway for ethylene biosynthesis comes from Met. Methionine is a fundamental metabolite in plant cells because it controls the level of several key metabolites, such as ethylene, polyamines and biotin through its first metabolite, SAM.…”

Section: Ethylene Cross-talk Associated With Sulfurmentioning

confidence: 99%

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Cross-talk between sulfur assimilation and ethylene signaling in plants

Iqbal¹,

Masood

Khan³

et al. 2013

Plant Signaling & Behavior

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Section: Ethylene Cross-talk Associated With Sulfurmentioning

confidence: 99%

Section: Ethylene Cross-talk Associated With Sulfurmentioning

confidence: 99%

Cross-talk between sulfur assimilation and ethylene signaling in plants

Iqbal¹,

Masood

Khan³

et al. 2013

Plant Signaling & Behavior

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“…As S is an essential element for all living organisms and occupies fourth place in importance after nitrogen (N), phosphorus (P) and potassium (K) in agricultural system, it could emerge as an element necessarily required for sustainability of crop plants under abiotic stress. Khan et al [9] and Nocito [10] have shown that S is necessary for abiotic stress tolerance of plants being an integral part of major metabolic compounds, such as amino acids (methionine; Met and cysteine; Cys), antioxidant (GSH), proteins, and sulfolipids. In addition, S is also a component of iron-S-clusters, polysaccharides and lipids and a broad variety of biomolecules including vitamins (biotin and thiamine), cofactors (CoA and S-adenosyl-Met), peptides (GSH and phytochelatins) and secondary products (allyl-cysteine sulphoxides and glucosinolates).…”

Section: Introductionmentioning

confidence: 99%

“…This causes generation of ROS and oxidative stress. The increase in salinity levels increases ion toxicity primarily due to the accumulation of Na + and Cl -, restriction of mineral nutrients uptake, loss of osmotic potential and ROS production and alterations in various physiological processes [9,14,15]. The increased ROS production causes damage to cells, but in addition, they induce signals for enhancing some protective mechanisms to scavenge ROS as well as damaging agents contributing to stress injury in plants [16].…”

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confidence: 99%

Salinity Tolerance in Plants: Revisiting the Role of Sulfur Metabolites

Khan¹,

Khan²,

Asgher³

et al. 2014

J Plant Biochem Physiol

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IntroductionSalinity is a major abiotic stress which adversely affects plant processes at physiological, biochemical and molecular level and reduces plant productivity [1,2]. The fertility status of soil is deteriorating due to increasing salinity levels and has been a subject of concern to agricultural scientists for sustainable developments of crops [3]. It is expected to result in the loss of up to 50% fertile land by the middle of the 21 st century [4]. The loss in plant productivity due to salinity has been associated to imbalance in ionic and nutrients status of plants [5,6], overproduction of Reactive Oxygen Species (ROS) and redox state of cell. The consequence of ROS overproduction in chloroplast, mitochondria and peroxisomes is damage to lipids, proteins, nucleic acids and integrity of cell membrane properties [7,8]. Among various mechanisms adopted by plants to cope with the increasing salinityinduced oxidative stress, maintaining redox state of cell through increased sulfur (S) metabolism and production of S-containing compounds are of paramount importance. It is, therefore, necessary to consolidate our understanding on the S metabolism for improving salinity tolerance in plants. As S is an essential element for all living organisms and occupies fourth place in importance after nitrogen (N), phosphorus (P) and potassium (K) in agricultural system, it could emerge as an element necessarily required for sustainability of crop plants under abiotic stress. Khan et al. [9] and Nocito [10] have shown that S is necessary for abiotic stress tolerance of plants being an integral part of major metabolic compounds, such as amino acids (methionine; Met and cysteine; Cys), antioxidant (GSH), proteins, and sulfolipids. In addition, S is also a component of iron-S-clusters, polysaccharides and lipids and a broad variety of biomolecules including vitamins (biotin and thiamine), cofactors (CoA and S-adenosyl-Met), peptides (GSH and phytochelatins) and secondary products (allyl-cysteine sulphoxides and glucosinolates).It is expected that modulation of S metabolism in plants would help in alleviating adverse effects of salinity as its metabolites control wide range of plant processes. The production of S-containing compounds through S metabolism is linked to antioxidant system in plants under salinity stress (Figure 1). Studies have revealed various aspects of salinity tolerance mechanisms [5,[11][12][13], but a consolidated approach on salinity AbstractSalinity is becoming a major threat to plant productivity loss in agricultural system. Plants respond to saline environment by modulating the inherent mechanisms to adjust to the changing environment. The understanding of the mechanisms that plants operate under saline environment is essential beginning in efforts to reduce the adverse effects of salinity stress. The agricultural system is tightly linked with the fertilizer input and thus the judicious application of fertilizers is expected to lead positive effects in reversing the salinity effects. Sulfur is a macron...

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“…Therefore, there is an urgent need to develop techniques to confront the adverse effects of salinity stress and develop strategies to enhance crop production under saline conditions. To do so, it is necessary to understand the physiological processes and molecular mechanisms that have evolved in plants to tolerate salt resistance, and exploit them for sustainable crop production Iqbal et al, 2013;Khan et al, 2013).…”

mentioning

confidence: 99%