Potassium in plants: Growth regulation, signaling, and environmental stress tolerance

Johnson, Riya; Vishwakarma, Kanchan; Hossen, Md. Shahadat; Kumar, Vinod; Shackira, A.M.; Puthur, Jos T.; Abdi, Gholamreza; Sarraf, Mohammad; Hasanuzzaman, Mirza

doi:10.1016/j.plaphy.2022.01.001

Cited by 208 publications

(93 citation statements)

References 158 publications

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“…The effect of salinity on plant growth occurs in two phases: the first phase is dominated by osmotic stress and the second by ion-specific stress with a subsequent generation of free radicals and reactive oxygen species (ROS) ( Ali et al, 2022a ; Wahab et al, 2022 ). In the first phase, the accumulation of compatible solutes in the cytosol regulates osmotic adjustment in plant cells and helps maintain pressure potential, which is essential for normal cell function and growth ( Hameed et al, 2021 ; Johnson et al, 2022 ).…”

Section: Introductionmentioning

confidence: 99%

RETRACTED: Mitigation of salinity stress in barley genotypes with variable salt tolerance by application of zinc oxide nanoparticles

et al. 2022

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Salinity has become a major environmental concern of agricultural lands, impairing crop production. The current study aimed to examine the role of zinc oxide nanoparticles (ZnO NPs) in reducing the oxidative stress induced by salinity and the overall improvement in phytochemical properties in barley. A total of nine different barley genotypes were first subjected to salt (NaCl) stress in hydroponic conditions to determine the tolerance among the genotypes. The genotype Annora was found as most sensitive, and the most tolerant genotype was Awaran 02 under salinity stress. In another study, the most sensitive (Annora) and tolerant (Awaran 02) barley genotypes were grown in pots under salinity stress (100 mM). At the same time, half of the pots were provided with the soil application of ZnO NPs (100 mg kg–1), and the other half pots were foliar sprayed with ZnO NPs (100 mg L–1). Salinity stress reduced barley growth in both genotypes compared to control plants. However, greater reduction in barley growth was found in Annora (sensitive genotype) than in Awaran 02 (tolerant genotype). The exogenous application of ZnO NPs ameliorated salt stress and improved barley biomass, photosynthesis, and antioxidant enzyme activities by reducing oxidative damage caused by salt stress. However, this positive effect by ZnO NPs was observed more in Awaran 02 than in Annora genotype. Furthermore, the foliar application of ZnO NPs was more effective than the soil application of ZnO NPs. Findings of the present study revealed that exogenous application of ZnO NPs could be a promising approach to alleviate salt stress in barley genotypes with different levels of salinity tolerance.

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Section: Introductionmentioning

confidence: 99%

RETRACTED: Mitigation of salinity stress in barley genotypes with variable salt tolerance by application of zinc oxide nanoparticles

et al. 2022

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“…There were significant differences in K among the different experiments ( p < 0.0001). Increased K can be beneficial for plants and humans as K improves stomatal functioning and water regulation in plants 40 and reduces blood pressure in humans 41 . However, increased K is also necessary to consider in people that require low K diets 42 .…”

Section: Resultsmentioning

confidence: 99%

Increasing vitamin C through agronomic biofortification of arugula microgreens

Kathi

Laza

Singh

et al. 2022

Sci Rep

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Vitamin C (Vit C) is an essential micronutrient and antioxidant for human health. Unfortunately, Vit C cannot be produced in humans and is ingested through diet while severe deficiencies can lead to scurvy. However, consumption is often inconsistent, and foods vary in Vit C concentrations. Biofortification, the practice of increasing micronutrient or mineral concentrations, can improve the nutritional quality of crops and allow for more consistent dietary levels of these nutrients. Of the three leading biofortification practices (i.e., conventional, transgenic, and agronomical), the least explored approach to increase Vit C in microgreens is agronomically, especially through the supplemental application of ascorbic acid. In this study, biofortification of Vit C in microgreens through supplemental ascorbic acid was attempted and proven achievable. Arugula (Eruca sativa 'Astro') microgreens were irrigated with four concentrations of ascorbic acid and a control. Total Vit C (T-AsA) and ascorbic acid increased in microgreens as supplementary concentrations increased. In conclusion, biofortification of Vit C in microgreens through supplemental ascorbic acid is achievable, and consumption of these bio-fortified microgreens could help fulfill the daily Vit C requirements for humans, thereby reducing the need for supplemental vitamins.

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“…The K concentration in leaves was higher in plants irrigated with TWW ( p < 0.05). The nutrient K controls the entry and exit of water to the cells and therefore the opening and closing of the stomata [ 83 , 84 ]. Hence, the high concentration of K in plants irrigated with TWW could have influenced the differences found in SD and SA.…”

Section: Resultsmentioning

confidence: 99%

The Impact of Treated Wastewater Irrigation on the Metabolism of Barley Grown in Arid and Semi-Arid Regions

Álvarez-Holguín

Sosa-Pérez

Ponce-García

et al. 2022

IJERPH

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The use of treated wastewater (TWW) for irrigation has gained global attention since it reduces pressure on groundwater (GW) and surface water. This study aimed to evaluate the effect of TWW on agronomic, photosynthetic, stomatal, and nutritional characteristics of barley plants. The experiment with barley was established on two bands: one band was irrigated with GW and the other with TWW. The evaluation was performed 25, 40, 60, 90, and 115 days after sowing (DAS). Results showed that irrigation with TWW increased (p < 0.01) grain yield by 54.3% and forage yield by 39.4% compared to GW irrigation. In addition, it increased plant height (PH) (p = 0.013), chlorophyll concentration index (CCI) (p = 0.006), and leaf area index (LAI) (p = 0.002). TWW also produced a positive effect (p < 0.05) in all the photosynthetic efficiency parameters evaluated. Barley plants irrigated with TWW had lower stomatal density (SD) and area (SA) (p < 0.001) than plants irrigated with GW. Plants irrigated with TWW had a higher P concentration (p < 0.05) in stems and roots and K concentration in leaves than plants irrigated with GW. We concluded that the use of TWW induced important biochemical, physiological, and agronomic changes in barley plants. Hence, the use of TWW may be a sustainable alternative for barley production in arid and semi-arid regions. This study was part of a government project, which aimed to develop a new metropolitan irrigation district with TWW. This study may contribute to the sustainability of water resources and agricultural practices in northern Mexico.

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Potassium in plants: Growth regulation, signaling, and environmental stress tolerance

Cited by 208 publications

References 158 publications

RETRACTED: Mitigation of salinity stress in barley genotypes with variable salt tolerance by application of zinc oxide nanoparticles

RETRACTED: Mitigation of salinity stress in barley genotypes with variable salt tolerance by application of zinc oxide nanoparticles

Increasing vitamin C through agronomic biofortification of arugula microgreens

The Impact of Treated Wastewater Irrigation on the Metabolism of Barley Grown in Arid and Semi-Arid Regions

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