Potassium and turgor pressure in plants

Hastings, David F.; Gutknecht, John

doi:10.1016/0022-5193(78)90197-2

Cited by 19 publications

(7 citation statements)

References 12 publications

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“…In order to maintain an appropriate concentration of K + , plant cells monitor K + availability in roots. Although the details of the mechanism that allow plants to sense K + availability and absorb have not been fully elucidated, K + channels and transporters are considered key players (Adams and Shin, 2014; Amtmann and Blatt, 2009; Fu and Luan, 1998; Gierth et al, 2005; Grabov, 2007; Hastings and Gutknecht, 1978; Leigh and Wyn Jones, 1984; Schachtman and Shin, 2007; Voelker et al, 2006; Wang and Wu, 2013). Higher plants utilize a dual affinity K + uptake system for K + acquisition, depending on K + availability (Epstein et al, 1963).…”

Section: K+ Uptake and Transportmentioning

confidence: 99%

“…Potassium plays critical roles in controlling ion homeostasis, osmoregulation, protein metabolism, enzyme activity, membrane polarization, and various metabolic processes (Amtmann et al, 2006; Hastings and Gutknecht, 1978; Schachtman and Shin, 2007; Walker et al, 1996). Additionally, fundamental physiological processes in plants, including photosynthesis, photorespiration, and growth are dramatically affected by K + availability (Gattward et al, 2012; Pettogrew, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Strategies for Improving Potassium Use Efficiency in Plants

Shin¹

2014

Molecules and Cells

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Potassium is a macronutrient that is crucial for healthy plant growth. Potassium availability, however, is often limited in agricultural fields and thus crop yields and quality are reduced. Therefore, improving the efficiency of potassium uptake and transport, as well as its utilization, in plants is important for agricultural sustainability. This review summarizes the current knowledge on the molecular mechanisms involved in potassium uptake and transport in plants, and the molecular response of plants to different levels of potassium availability. Based on this information, four strategies for improving potassium use efficiency in plants are proposed; 1) increased root volume, 2) increasing efficiency of potassium uptake from the soil and translocation in planta, 3) increasing mobility of potassium in soil, and 4) molecular breeding new varieties with greater potassium efficiency through marker assisted selection which will require identification and utilization of potassium associated quantitative trait loci.

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Section: K+ Uptake and Transportmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Strategies for Improving Potassium Use Efficiency in Plants

Shin¹

2014

Molecules and Cells

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“…Potassium is required for various biochemical and physiological processes that are responsible for plant growth and development. Potassium also plays critical roles in controlling protein metabolism, enzyme activity, membrane polarization, and various metabolic processes Hastings and Gutknecht, 1978;Walker et al, 1996;Schachtman and Shin, 2007;Amtmann et al, 2006;Mengel 1985Mengel & 2007Sumam et al, 2017 andHasanuzzman et al, 2018). Additionally, fundamental physiological processes in plants including photosynthesis, photorespiration, and growth are dramatically affected by K+ availability (Gattward et al, 2012;Pettogrew, 2008).Fe and B can stimulate some important enzymes responsible for cell devotion and cell elongation such as Oxidoreductase, peroxidases enzymes Moreover, Yang et al, (2014) confirmed that potassium absorption and accumulation in plant was positive correlated with the level of some growth regulators.…”

Section: Shoot Lengths (Cm)mentioning

confidence: 99%

Response of Wonderful Pomegranate to Pre-Harvest Spray by Potassium, Iron and Boron as Alternative to Fertigation

2019

FJA

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During 2017 and 2018 seasons, Wonderful pomegranate treated with potassium sulphate (K2SO4) and/or ferrous sulphate (FeSO4) and boric acid (H3BO3). The main object was examining the effect of these three compounds and their interaction on trees flowering, yield and leaf mineral content. Treating the trees three times with K2SO4, FeSO4and H3BO3 caused a remarkable stimulation on number of total and perfect flowers, compared with untreated control. Furthermore, treating the trees with K2SO4 and/or FeSO4& H3BO3 caused increasing yield (Kg/tree) and very effective in enhancing leaf N, P & K%. The combined application of the three compounds was superior than the single application of each compound on enhancing all flowering aspects and yield and improved leaves NPK. For enhancing flowering, crop of yields and leaf mineral contents (NPK) of Wonderful pomegranate, it is suggested to spray the trees with a mixture of K2SO4 and/or FeSO4 and H3BO3 three times yearly during the fruit growth cycle.

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“…Potassium (K + ) is the most abundant essential cation in almost all organisms and it plays a pivotal role in the fundamental physiological processes in plants (Hastings and Gutknecht ; Maathuis and Amtmann ; Very and Sentenac ; Amtmann et al ). Cytosolic K + concentrations are sustained at approximately 100 mmol/L in the plant cell whereas vacuolar K + concentrations are variable depending on the external K + concentrations (Rodriguez‐Navarro ).…”

Section: Introductionmentioning

confidence: 99%