The Critical Role of Potassium in Plant Stress Response

Wang, Min; Zheng, Qi; Shen, Qirong; Guo, Shiwei

doi:10.3390/ijms14047370

Cited by 1,374 publications

(979 citation statements)

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“…Ashraf et al, 2002). K also contributes to the detoxification of reactive oxygen species (ROS) (Wang et al, 2013). The impairment of stomatal regulation in K-deficient plants under drought stress produces a consequent impairment of CO 2 fixation, and molecular oxygen is activated leading to the generation of ROS (Cakmak, 2000).…”

Section: Box 1 Main Ecophysiological Roles Of Kmentioning

confidence: 99%

“…Many field studies have thus observed correlations between K concentrations in plants and soils and mechanisms of drought avoidance (Nandwal et al, 1998;Arquero et al, 2006;Teixeira et al, 2008;Fayyaz et al, 2013;Tomlinson et al, 2013). Many physiological and metabolomic studies in garden and potted plants (Babita et al, 2010;Cuéllar et al, 2010) and in crops (Römheld & Kirkby, 2010;Waraich et al, 2011;Wang et al, 2013), and some studies across environmental gradients under field conditions (Kadar & Foldesi, 2001), have observed a strong link between K concentrations and the resistance and adaptation of plants to drought. Under drought K deficiency, plant defoliation (Harvey & van den Driessche, 1999) and mortality (Del Campo et al, 2011;El-Mesbahi et al, 2012) increase.…”

Section: Box 1 Main Ecophysiological Roles Of Kmentioning

confidence: 99%

“…Other physiological functions: Many plant functions that are not directly related to water economy have recently been associated with K, such as enzymatic activity and protein synthesis (Armengaud et al, 2004(Armengaud et al, , 2009, internal transport and allocation of amino acids and nitrates (Jarvis et al, 1990), photosynthetic activity and retranslocation of fixed C Teixeira et al, 2008), signal transduction and energy transport (Gajdanowicz et al, 2011), cellular, foliar and root expansion (Elumalai et al, 2002;Yin et al, 2011) and foliar movement (Travlos et al, 2008), among several other metabolic and physiological functions essential for plant life. Evidence, moreover, is increasing that adequate K fertilization plays an important role in defending crops not only against drought but also against many other biotic and abiotic stresses such as diseases, pests, salinity, cold, frost and waterlogging (see the recent review by Wang et al, 2013). Gajdanowicz et al (2011) recently observed that K + circulating in the phloem creates a mobile gradient serving as a decentralized energy store that can be used to overcome local energy limitations through the activation of diverse membrane proteins.…”

Section: Box 1 Main Ecophysiological Roles Of Kmentioning

confidence: 99%

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Potassium: a neglected nutrient in global change

Sardans

Peñuelas

2015

Global Ecology and Biogeography

436

283

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Aim Potassium (K) is the second most abundant nutrient in plant photosynthetic tissues after nitrogen (N). Thousands of physiological and metabolic studies in recent decades have established the fundamental role of K in plant function, especially in water-use efficiency and economy, and yet macroecological studies have mostly overlooked this nutrient. MethodsWe have reviewed available studies on the content, stoichiometry and roles of K in the soil-plant system and in terrestrial ecosystems. We have also reviewed the impacts of global change drivers on K content, stoichiometry and roles. ConclusionsThe current literature indicates that K, at a global level, is as limiting as N and phosphorus (P) for plant productivity in terrestrial ecosystems. Some degree of K limitation has been seen in up to 70% of all studied terrestrial ecosystems. However, in some areas atmospheric K deposition from human activities is greater than that from natural sources. We are far from understanding the K fluxes between the atmosphere and land, and the role of anthropogenic activities in these fluxes. The increasing aridity expected in wide areas of the world makes K more critical through its role in water-use efficiency. N deposition exerts a strong impact on the ecosystem K cycle, decreasing K availability and increasing K limitation. Plant invasive success is enhanced by higher soil K availability, especially in environments without strong abiotic stresses. The impacts of other drivers of global change, such as increasing atmospheric CO2 or changes in land use, remain to be elucidated. Current models of the responses of ecosystems and carbon storage to projected global climatic and atmospheric changes are now starting to consider N and P, but they should also consider K, mostly in arid and semi-arid ecosystems.

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Section: Box 1 Main Ecophysiological Roles Of Kmentioning

confidence: 99%

Section: Box 1 Main Ecophysiological Roles Of Kmentioning

confidence: 99%

Section: Box 1 Main Ecophysiological Roles Of Kmentioning

confidence: 99%

See 1 more Smart Citation

Potassium: a neglected nutrient in global change

Sardans

Peñuelas

2015

Global Ecology and Biogeography

436

283

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“…On the other hand more uptakes and accumulation of toxic ions (such as Na + ) affected osmotic potential of plant tissues, which cause the reduction in photosynthesis and plant growth rate (Irshad et al, 2002;Ali et al, 2012, Kausar et al, 2012. As a result the plant development depends upon the availability of suitable amounts of potassium especially under saline conditions (Wang et al, 2013). Mojiri and Jalalian (2011) investigated the relationships between growth of N. schoberi and some soil properties.…”

Section: Methodsmentioning

confidence: 99%

Response of two halophyte plants (Nitraria schoberi and Halocnemum strobilaceum) to potassium sulfate under saline condition

et al. 2017

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Due to the desertification development and consequently the increase of saline lands in Iran, the use of resistant plants in such conditions to reduce its effects seems necessary. Hence, this study has tried to investigate the effect of potassium sulfate treatment on dry matter and Na and K content and physiological properties of foliar tissue of two halophyte species (Nitraria schoberi and Halocnemum strobilaceum) under different saline conditions. According to the results all studied parameters were significantly affected by plant species, potassium sulfate and NaCl treatments. Plant species and NaCl interaction and triple interaction showed significant effect on dry weight, sodium and potassium content of shoot and leaf chlorophyll content, also plant species and K2SO4 interaction has significantly effect on plant height and sodium, potassium and flavonoid content of shoots. High levels of K2SO4 treatment (135 Kg ha -1 ) significantly affected potassium content of N. schoberi in 100 and 200 mM NaCl treatments and increased its content more than 27 and 28% respectively compared with control. Also, application of K2SO4 affected accumulation of flavonoids in both plant but the response of N. schoberi still significant. According to the mean comparison, N. schoberi showed more than 12% scavenging activity than the H. strobilaceum. It seems that H. strobilaceum has strategies beyond the antioxidant capacity to adapt to the stressful environment condition, which are seemed much more efficient than increasing antioxidant capacity.

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“…Potassium is an essential nutrient that affects most of the biochemical and physiological processes that influence plant growth and metabolism. It also contributes to the survival of plants exposed to various biotic and abiotic stresses (Wang et al, 2013b). Nitrogen and phosphorus are both part of biomolecules in plants but are the most limited in natural conditions.…”

Section: Methodsmentioning

confidence: 99%

Soil Quality of Kapatagan Watershed, Lanao del Norte

Matunog¹,

Yap²,

Gonzaga³

et al. 2013

JMDS

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Kapatagan watershed had once provided abounding natural resources to the community but is now degraded due to natural and anthropogenic activities. A rapid site assessment was conducted to determine soil quality of Kapatagan watershed. Seven representative barangays were selected as sampling sites. Moisture, texture, drainage, color and slope, pH, potassium, nitrogen and phosphorus content were the physicochemical properties of soil assessed. Results showed that most of these physicochemical qualities were within the standards while some were already at the borderline and few were outside the standard limit. Soil quality in Curvada was still good and suitable for plant growth. Phosphorus in soil of Mahayahay, Bel-is and Cathedral was already depleted. Mahayahay soil was slightly degraded as indicated further by the color and the surface pH value. These results can be used to evaluate past practices to determine their impact to watershed soil quality and to formulate policy direction towards sustainability. However, further investigation on various chemical, physical, and biological properties is necessary to comprehensively evaluate the current status on soil quality of the area.

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The Critical Role of Potassium in Plant Stress Response

Cited by 1,374 publications

References 106 publications

Potassium: a neglected nutrient in global change

Potassium: a neglected nutrient in global change

Response of two halophyte plants (Nitraria schoberi and Halocnemum strobilaceum) to potassium sulfate under saline condition

Soil Quality of Kapatagan Watershed, Lanao del Norte

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