Ammonium nutrition modulates K<sup>+</sup> and N uptake, transport and accumulation during salt stress acclimation of sorghum plants

Coelho, Daniel Gomes; Miranda, Rafael de Souza; Paula-Marinho, Stelamaris de Oliveira; Carvalho, Humberto Henrique de; Prisco, José Tarquı́nio; Gomes-Filho, Enéas

doi:10.1080/03650340.2019.1704736

Cited by 10 publications

(5 citation statements)

References 49 publications

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“…Lower K m and C min indicate higher affinity between the roots and K + and stronger ability to use the low-concentration K + , while higher I max ensures a faster K uptake rate ( Glass, 1980 ; Teo et al, 1992 ). The absorption kinetic parameters of ion uptake are useful indexes of the level of adaptation of the genotype to the nutrient condition in the soil ( Crowley, 1975 ; Daniel et al, 2020 ). The study of Hao et al (2015) also recognized that K kinetic parameters could be used to test crop low-K adaptability.…”

Section: Discussionmentioning

confidence: 99%

Root K Affinity Drivers and Photosynthetic Characteristics in Response to Low Potassium Stress in K High-Efficiency Vegetable Soybean

Liu

Wang

et al. 2021

Front. Plant Sci.

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Significant variations of potassium absorption and utilization exist in vegetable soybean. Pot and hydroponic experiments were carried out to examine the characteristics of root potassium (K) affinity-associated drivers and photosynthesis in vegetable soybean (edamame) [Glycine max (L.) Merr.] with different K efficiency. Two K high-efficiency vegetable soybean genotypes (Line 19 and Line 20) and two K low-efficiency genotypes (Line 7 and Line 36) were investigated in low K and normal K conditions. The root of K high-efficiency genotypes had a higher K+ affinity associated with a higher maximum K+ uptake rate (Imax), but lower Michaelis constant for K+ absorption (Km) and lower compensation concentration for K+ uptake (Cmin). Seedlings of K high-efficiency genotypes also had higher root vigor [triphenyl tetrazolium chloride (TTC) reduction method] and greater absorbing activity (methylene blue method), especially in the low K condition. Furthermore, the root bleeding-sap rate of K high-efficiency genotypes in low K stress was 9.9–24.3% greater than that of normal K conditions, which was accompanied by a relatively higher K concentration of root bleeding-sap in contributing to K+ upward flux. The root of K high-efficiency vegetable soybean genotypes exhibited K+ high-affinity and driving advantages. Photosynthetic parameters of K high-efficiency vegetable soybean genotypes were less affected by low K stress. Low K stress decreased the net photosynthetic rate of K high-efficiency genotypes by 6.1–6.9%, while that of K low-efficiency genotypes decreased by 10.9–15.7%. The higher chlorophyll (Chl) a/b ratio with enhanced relative content of Chl a in response to low K stress might be an adapted mechanism for K high-efficiency genotypes to maintain photosynthetic capacity. Stronger root K affinity drivers associated with photosynthetic adaptability to low K stress are the key factors in determining the K high-efficiency of vegetable soybeans.

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Section: Discussionmentioning

confidence: 99%

Root K Affinity Drivers and Photosynthetic Characteristics in Response to Low Potassium Stress in K High-Efficiency Vegetable Soybean

Liu

Wang

et al. 2021

Front. Plant Sci.

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“…Furthermore, N-supply also regulated ROS-homeostasis and alleviated salt-toxicity [73]. NH 4 + supplementation induced salt-tolerance through efficient N-uptake and assimilation processes and controlled K + /Na + homeostasis [74]. The N-supplementation with brassinosteroids seed priming also improved plant salttolerance [75].…”

Section: Nitrogen In Salt Tolerancementioning

confidence: 96%

Coordinated Role of Nitric Oxide, Ethylene, Nitrogen, and Sulfur in Plant Salt Stress Tolerance

et al. 2021

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Salt stress significantly contributes to major losses in agricultural productivity worldwide. The sustainable approach for salinity-accrued toxicity has been explored. The use of plant growth regulators/phytohormones, mineral nutrients and other signaling molecules is one of the major approaches for reversing salt-induced toxicity in plants. Application of the signaling molecules such as nitric oxide (NO) and ethylene (ETH) and major mineral nutrient such as nitrogen (N) and sulfur (S) play significant roles in combatting the major consequences of salt stress impacts in plants. However, the literature available on gaseous signaling molecules (NO/ETH) or/and mineral nutrients (N/S) stands alone, and major insights into the role of NO or/and ETH along with N and S in plant-tolerance to salt remained unclear. Thus, this review aimed to (a) briefly overview salt stress and highlight salt-induced toxicity, (b) appraise the literature reporting potential mechanisms underlying the role of gaseous signaling molecules and mineral nutrient in salt stress tolerance, and (c) discuss NO and ETH along with N and S in relation to salt stress tolerance. In addition, significant issues that have still to be investigated in this context have been mentioned.

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“…For instance, NO 3 fed rice and canola plants grew faster and had higher salt toxicity than NH 4 + -supplied plants, as evidenced by restricted allocation of Na + in leaf apoplasts (Gao et al, 2016). In contrast, NH 4 + fertilization significantly ameliorated the salt-triggered growth inhibition in sorghum (Coelho et al, 2020). Thus, the effect of N forms on salt resilience varies depending on the plant species.…”

Section: Regulation Of Nitrogen Metabolism and Nitrogen Use Efficienc...mentioning

confidence: 99%

Sustaining nitrogen dynamics: A critical aspect for improving salt tolerance in plants

et al. 2023

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In the current changing environment, salt stress has become a major concern for plant growth and food production worldwide. Understanding the mechanisms of how plants function in saline environments is critical for initiating efforts to mitigate the detrimental effects of salt stress. Agricultural productivity is linked to nutrient availability, and it is expected that the judicious metabolism of mineral nutrients has a positive impact on alleviating salt-induced losses in crop plants. Nitrogen (N) is a macronutrient that contributes significantly to sustainable agriculture by maintaining productivity and plant growth in both optimal and stressful environments. Significant progress has been made in comprehending the fundamental physiological and molecular mechanisms associated with N-mediated plant responses to salt stress. This review provided an (a) overview of N-sensing, transportation, and assimilation in plants; (b) assess the salt stress-mediated regulation of N dynamics and nitrogen use- efficiency; (c) critically appraise the role of N in plants exposed to salt stress. Furthermore, the existing but less explored crosstalk between N and phytohormones has been discussed that may be utilized to gain a better understanding of plant adaptive responses to salt stress. In addition, the shade of a small beam of light on the manipulation of N dynamics through genetic engineering with an aim of developing salt-tolerant plants is also highlighted.

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Ammonium nutrition modulates K⁺ and N uptake, transport and accumulation during salt stress acclimation of sorghum plants

Cited by 10 publications

References 49 publications

Root K Affinity Drivers and Photosynthetic Characteristics in Response to Low Potassium Stress in K High-Efficiency Vegetable Soybean

Root K Affinity Drivers and Photosynthetic Characteristics in Response to Low Potassium Stress in K High-Efficiency Vegetable Soybean

Coordinated Role of Nitric Oxide, Ethylene, Nitrogen, and Sulfur in Plant Salt Stress Tolerance

Sustaining nitrogen dynamics: A critical aspect for improving salt tolerance in plants

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Ammonium nutrition modulates K+ and N uptake, transport and accumulation during salt stress acclimation of sorghum plants

Cited by 10 publications

References 49 publications

Root K Affinity Drivers and Photosynthetic Characteristics in Response to Low Potassium Stress in K High-Efficiency Vegetable Soybean

Root K Affinity Drivers and Photosynthetic Characteristics in Response to Low Potassium Stress in K High-Efficiency Vegetable Soybean

Coordinated Role of Nitric Oxide, Ethylene, Nitrogen, and Sulfur in Plant Salt Stress Tolerance

Sustaining nitrogen dynamics: A critical aspect for improving salt tolerance in plants

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Ammonium nutrition modulates K⁺ and N uptake, transport and accumulation during salt stress acclimation of sorghum plants