Journal ArticleDOI
Genotypic differences in the response of sugar beet plants to replacement of potassium by sodium
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In this paper, the effect of replacing 50% or 95% of the potassium by sodium on growth and on potassium and sodium levels in three genotypes of sugar beet (MONOHILL, ADA, FIA) has been studied in water culture over a period from 2 to 9 weeks.Abstract:
The effect of replacing 50% or 95% of the potassium by sodium on growth and on potassium and sodium levels in three genotypes of sugar beet (MONOHILL; ADA; FIA) has been studied in water culture over a period from 2 to 9 weeks.
In all three genotypes there was a preferential uptake of potassium compared to sodium. Nevertheless, at high sodium supply most of the potassium was replaced by sodium, particularly in the leaves. At the same supply the accumulation of sodium in the leaves increased in the following order: ADA < MONOHILL < FIA. Even with high dominance of sodium in the medium, the youngest leaves of FIA held about 0.5 mmol potassium per g dry matter, and potassium was evidently translocated from old leaves to the new growth.
Effects of sodium on growth became more important with time. After 9 weeks, 50% replacement of potassium by sodium increased growth of all plant organs of the three genotypes. Replacing 95% of potassium by sodium depressed growth of the storage root in MONOHILL and particularly in ADA, with simultaneous enhancement of leaf growth in the latter. In FIA, however, this treatment further stimulated both leaf and, particularly, storage root growth. Sodium in comparison with potassium increased the sucrose concentration in leaves and storage roots. The highest sucrose concentration in the storage roots of ADA and FIA was obtained in the treatment with 95% sodium.
The results demonstrate pronounced genotypic differences in sugar beet with respect to the response to sodium. FIA has the most natrophilic behaviour and might be a promising genotype for breeding programmes for adaptation of sugar beet plants to soils high in sodium.read more
Citations
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Salinity stress alleviation using arbuscular mycorrhizal fungi. A review
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Colonization with arbuscular mycorrhizal fungi improves salinity tolerance of tomato (Solanum lycopersicum L.) plants
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Journal ArticleDOI
Sodium transport in plants: a critical review
TL;DR: The evidence supporting the role of nonselective cation channels, potassium transporters, and transporter from the HKT family in primary sodium influx into plant roots, and their possible roles elsewhere is explored.
Journal ArticleDOI
Sodium—A Functional Plant Nutrient
TL;DR: An array of evidence and arguments are presented to support the classification of Na as a “functional nutrient,” including its requirement for maximal biomass growth for many plants and its demonstrated ability to replace K in a number of ways.
References
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Journal ArticleDOI
Accumulation of sucrose in vacuoles isolated from red beet tissue
TL;DR: The uptake of sucrose against a concentration gradient into the dextran-impermeable [3H]-H2O space of these organelles was studied and an ATPase activity dependent on both Mg2+ and K+ seems to be localized at the inner surface of the tonoplast.
Journal ArticleDOI
Effects of Sodium and Potassium on Starch Synthesis in Leaves
TL;DR: The results suggest that K+ is essential for the conversion of sugars to starch in some plant species and that ADPglucose starch synthase is the enzyme involved in starch synthesis in the leaves of these species.
Journal ArticleDOI
Differences in salt tolerance of three sugar beet genotypes
TL;DR: The effect of increasing NaCl concentrations (up to 150 mM) on growth and mineral composition of three genotypes of sugar beet (Beta vulgaris L, MONOHILL, ADA and FIA) has been studied.
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Effect of K+ and Na+ on growth of leaf discs of sugar beet and spinach
H. Marschner,J.V. Possingham +1 more
TL;DR: The results suggest that K + cannot be replaced by Na + in chlorophyll formation but to a large extent K + can be replaced in cell expansion and chloroplast multiplication.
Journal ArticleDOI
Interactions of Rubidium, Sodium, and Potassium on the Nutrition of Sugar Beet Plants
Adel M. El-Sheikh,Albert Ulrich +1 more
TL;DR: The effect of Rb on the growth and the development of sugar beet plants (Beta vulgaris, var. MS NB1 x NB4) depends on the Rb concentration, the K supply, and the relative abundance of Na.