Plant uptake of NaCl in relation to enzyme kinetics and toxic effects

Trapp, Stefan; Feificova, Dagmar; Rasmussen, Nikolaj F.; Bauer‐Gottwein, Peter

doi:10.1016/j.envexpbot.2008.05.001

Cited by 46 publications

(28 citation statements)

References 10 publications

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“…Maathuis and Amtmann (1999) and Blumwald (2000) postulated that willows are, by enzymatic removal, able to pump out chloride (exposed as NaCl) from the root cells. Later, Trapp et al (2008) confirmed these findings. The scope of this study was to evaluate the phytotoxicity of NaF when administered to roots and to assess F uptake into trees.…”

Section: Introductionsupporting

confidence: 55%

“…We supposed that these outward directed carrier systems are not limited to chloride but might also transport other halogen anions, namely fluoride. Consequently, we applied the dynamic mass balance model with enzyme kinetics for ion removal developed in Trapp et al (2008) to our results. The model assumes that the solute dissolved in water, in this case fluoride, is taken up passively with the water transpired.…”

Section: Model Simulationsmentioning

confidence: 99%

See 1 more Smart Citation

Phytotoxicity of Sodium Fluoride and Uptake of Fluoride in Willow Trees

Clausen

Karlson

Trapp

2014

International Journal of Phytoremediation

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Section: Introductionsupporting

confidence: 55%

Section: Model Simulationsmentioning

confidence: 99%

Phytotoxicity of Sodium Fluoride and Uptake of Fluoride in Willow Trees

Clausen

Karlson

Trapp

2014

International Journal of Phytoremediation

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“…It is well known that salt stress reduces root hydraulic conductivity, resulting in decreased water flow from roots to shoots, even in osmotically adjusted plants (Prisco, 1980). The transpiration rate of plants is coupled with the photosynthesis, and the inhibition of transpiration is a reliable and quick measure of toxic effects of salt (Trapp et al, 2000(Trapp et al, , 2008. The decrease in relative Tr and leaf RWC in salt-stressed plants suggested that NaCl decreased the water flow from roots to shoots and caused a toxic effect on the growth of perennial ryegrass.…”

Section: Discussionmentioning

confidence: 99%

Exogenous Glycine Betaine Ameliorates the Adverse Effect of Salt Stress on Perennial Ryegrass

Hu¹,

Hu²,

Zhang³

et al. 2012

J. Amer. Soc. Hort. Sci.

118

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Salinity stress may involve the accumulation of glycine betaine (GB). The objective of this study was to examine whether exogenous GB would ameliorate the detrimental effect of salinity stress on perennial ryegrass (Lolium perenne). The grass was subjected to two salinity levels (0 and 250 mm NaCl) and three GB levels (0, 20, and 50 mm). Salinity resulted in a remarkable decrease in vertical shoot growth rate (VSGR), shoot and root fresh weight, relative water content (RWC), relative transpiration rate (Tr), and chlorophyll (Chl) content, superoxide dismutase (SOD), catalase (CAT), and ascorbate peroxidase (APX) activities. Plants subjected to salt exhibited an increase in leaf electrolyte leakage (EL), lipid peroxidation (MDA), and proline content. Application of GB reduced EL, MDA, and proline content in salt-stressed plants. Perennial ryegrass subjected to salt stress plus GB had a greater level of VSGR, RWC, relative Tr, Chl content, and activities of SOD, CAT, and APX when compared with salt-stressed without GB. Salt stress increased Na+ and decreased K+ content, which resulted in a higher Na+/K+ ratio in perennial ryegrass. Application of 20 mm GB suppressed Na+ accumulation, whereas the K+ content was significantly increased in shoot, which led to a higher K+/Na+ ratio under saline conditions. These results suggested that GB-enhanced salt tolerance in perennial ryegrass was mainly related to the elevated SOD, CAT, and APX activity and alleviation of cell membrane damage by reducing oxidation of membrane lipid and improving the ion homeostasis under salt stress.

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“…Trapp et al . () developed a non‐linear model to determine NaCl uptake and toxicity in willow. Pishchik et al .…”

Section: Introductionmentioning

confidence: 99%

“…Some studies have analysed toxicity after abiotic stress by constructing mathematical models. Trapp et al (2008) developed a nonlinear model to determine NaCl uptake and toxicity in willow. Pishchik et al (2002) simulated the beneficial effects of rhizobacteria in growth promotion of barley under cadmium stress using non-linear ordinary differential equations.…”

Section: Introductionmentioning

confidence: 99%

Leaf functional trait variation associated with salt tolerance in perennial ryegrass

Zhang

Sun

et al. 2013

Plant Biol J

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Salinity is one of major environmental stresses that dramatically threaten plant growth, and variations in genetic structure and functional traits have important effects on the salt tolerance of perennial ryegrass (Lolium perenne L.). The objectives of this study were to: (i) assess the inter-clonal variation of functional traits of accessions among geographic groups or between wild and commercial groups in response to salt stress; (ii) develop a mathematical model to effectively assess salt tolerance of perennial ryegrass accessions originating from different geographic populations; and (iii) determine the relation between spatial genetic structure and salt tolerance in perennial ryegrass. Wide variations were found among the accessions for seven functional traits. One regression model (F = 0.49 × F1 + 0.303 × F2 + 0.207 × F3) was established to ascertain salt tolerance of each accession. The highest variation of the traits and salt tolerance were obtained for accessions from the European group. Wild accessions exhibited more variation in functional traits and salt tolerance than commercial cultivars. Both molecular marker techniques and functional traits were used to conduct phylogenetic analysis, and the majority of accessions from the same or adjacent regions were clustered into the same group or subgroup. The perennial ryegrass accessions with similar salt tolerance had a close phylogenetic background. The patterns in functional trait variations associated with salt tolerance might allow acceleration of the process for improving salt stress resistance in perennial ryegrass.

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Plant uptake of NaCl in relation to enzyme kinetics and toxic effects

Cited by 46 publications

References 10 publications

Phytotoxicity of Sodium Fluoride and Uptake of Fluoride in Willow Trees

Phytotoxicity of Sodium Fluoride and Uptake of Fluoride in Willow Trees

Exogenous Glycine Betaine Ameliorates the Adverse Effect of Salt Stress on Perennial Ryegrass

Leaf functional trait variation associated with salt tolerance in perennial ryegrass

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