Mechanisms of Cl<sup>‐</sup> transport contributing to salt tolerance

Teakle, Natasha L.; Tyerman, Stephen D.

doi:10.1111/j.1365-3040.2009.02060.x

Cited by 406 publications

(355 citation statements)

References 227 publications

(539 reference statements)

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“…Although higher concentrations of Cl -is toxic to plants, it is considered as an essential nutrient that regulates enzyme activities in the cytoplasm, acts as a counter anion to stabilize membrane potential, and is involved in turgor and pH regulation (Teakle and Tyerman, 2010). Therefore, the reduction in Cl -in 0 mM K, Alkalinity+0 mM K, and Alkalinity+2 mM K treatments clearly contributed an adverse effect to the natural physiological metabolism processes of Swiss chard plants in these treatments.…”

Section: Discussionmentioning

confidence: 99%

“…From a Cl -perspective, the efflux of Cl -could be balanced by the uptake of another anion. NO 3 -/Cl -interactions are analogous to K + /Na + interactions and many anion channels are more selective for NO 3 -than Cl - (Teakle and Tyerman, 2010). In Alkalinity+2 mM K and Alkalinity+0 mM K treatments, the obvious inductions of NO 3 -would likely offset the scarcity of anions caused by sharp reductions in Cl -.…”

Section: Discussionmentioning

confidence: 99%

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Beneficial Effects of Potassium on Growth, Water Relations, Mineral Accumulation and Oxidative Damage of Beta vulgaris in Sodic-alkaline Condition

Liu¹,

El‐Shemy²,

Saneoka³

2017

IJAB

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Potassium (K + ) plays a vital role for plant growth and therefore the amount of K + seems to be a key of plant development. Therefore, this study investigated whether the sodic-alkalinity tolerance of Swiss chard (Beta vulgaris L. subsp. cicla) could be increased, via greater water uptake, higher concentrations of mineral elements and higher antioxidant enzyme activities in sodic-alkaline stress conditions with K + supplementation. Forty seven day old uniform seedlings were pre-treated in hydroponic medium with or without K + for 7 days, and then treated in non-alkaline or alkaline conditions for 9 days. The absence of K + somewhat intensified the effect of alkalinity on reducing the growth of Swiss chard, the total dry weight (DW) was reduced by 34% in plants treated in sodic-alkaline conditions without K + when compared with plants with K + . Relative water content (RWC) of leaves was increased by 10% by K + supplementation in sodic-alkaline conditions. Additionally, the osmotic adjustment was retorted; the contents of K , and the activities of catalase, guaiacol peroxidase, and glutathione reductase were increased. On other hand, K + supplementation in sodic-alkaline conditions helped to maintain guaiacol peroxidase activity similar to that of control plants, and reduced malondialdehyde content when compared with plants treated in sodic-alkaline conditions without K + . In conclusion, the K + supplementation resulted in favorable changes in plants with higher micronutrient contents and a reduction of oxidative damage induced by sodicalkalinity in Swiss chard.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Beneficial Effects of Potassium on Growth, Water Relations, Mineral Accumulation and Oxidative Damage of Beta vulgaris in Sodic-alkaline Condition

Liu¹,

El‐Shemy²,

Saneoka³

2017

IJAB

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“…The toxic effects of Na are well known and correlated with the grain yield under saline conditions [49][50][51][52][53], whereas there are few reports on toxic effects of Cl in salinity experiments [3,9,33,[54][55][56][57][58]. For further information on the roles of Na and Cl in plants under salt stress see Teakle and Tyerman [59] and Flowers et al [60]. Single or combined element ratios were scattered in the 62 rice genotypes under control and salt stress conditions within each salt category compared to the standards.…”

Section: Validation Experimentsmentioning

confidence: 99%

Prediction of Salt Tolerance in Rice (Oryza Sativa) Based on Shoot Ion Content under Non-Stressed Conditions

Bado¹,

Forster²,

Padilla-Álvarez³

et al. 2016

JMSE-A

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Salt is a major abiotic stress threatening crop plants such as rice. Tolerance to salt is complex and regulated by numerous genetic and non-genetic factors. To date most screens for salt tolerance rely on plant performance in stressed conditions. This article describes the ability to screen for salt tolerance in non-stressed conditions. The work is based on correlations between 62 rice genotypes in salt stress and non-stress conditions and measuring the intake of elements using Particle Induced X-ray Emission and X-ray Fluorescence. Roots and shoots were analysed though shoots provided easier and more robust materials to work with. Data were interpreted using multivariate statistical analysis which showed the intake ratio of elements across tolerant, moderately tolerant and susceptible rice genotypes. Tolerant genotypes exhibited a larger intake of elements, and a classification criteria based on Canonical Discriminant Analysis allowed differentiation of salt tolerant genotypes not only under salt stress but, significantly, also under non-stressed conditions. Thus, shoot element content in benign conditions can be used as an indicator for salt tolerance. These studies suggest that many salt tolerance mechanisms in rice cultivars are constitutive, they are not switched on by stress, and this has implications for physiological and genetic studies, especially in crop plants. The approach has practical application as it allows pre-screening in non-stressed conditions, from which candidate salt tolerant genotypes may be selected for subsequent testing in saline field conditions, selecting in benign conditions provides greater seed harvest of the next generation which can be used in multiple tests.

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“…Chloride transport and exclusion from shoots is correlated with salt tolerance in many species. Crop tolerance to chloride is not nearly so well documented as crop tolerance to salinity, however, its concentration is important for salt tolerance (Tavakkoli et al 2010;Teakle and Tyerman 2010). Chlorine inputs to soils occur mainly as a result of Cl -deposition from rainwater, fertilizer applications (KCl), irrigation water, sea spray, dust and air pollution.…”

Section: Introductionmentioning

confidence: 99%

Plant stress activated by chlorine from disinfectants prepared on the base of sodium hypochlorite

Fargašová¹

2017

Nova Biotechnologica Et Chimica

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In this study, the phytotoxicity of disinfectants prepared on the base of sodium hypochlorite was determined. For our tests two commercial products, Savo and Dom Amor, as well as 10% NaClO solution were used. While Savo contained only NaClO, Dom Amor contained NaClO and earthworm enzymes. Products on the base of NaClO are used in households for cleaning and disinfection of floors, furniture, sanitary and kitchen equipment. Savo may be used for the disinfection of drinking waters as well. Products with NaClO are also used for bacteria, algae and pathogens reduction in irrigation waters. As a subject, young seedlings of mustard Sinapis alba L. were used for the study of chronic toxicity. The observed parameters of the inhibition of roots and shoots growth, dry (DM) and fresh (FM) mass as well as photosynthetic pigments production (chlorophyll a, b, carotenoids) and water content in the plants were determined. The results point out that Dom Amor was the most toxic for S. alba seedlings growth and the rank order of the FAC contents for both plant parts was arranged as: Dom Amor > Savo > NaClO. All disinfectants reduced the DM and FM of roots; however, they stimulated biomass production in the shoots. On the basis of the obtained results it could be concluded, that disinfectants stimulated photosynthetic pigments production and reduced water content mainly in the roots. Dom Amor did not significantly reduced the water content in the shoots and for this parameter the following rank orders of inhibition for roots and shoots could be arranged as NaClO > Dom Amor > Savo and NaClO > Savo > Dom Amor, respectively. All commercial products increased chlorophyll a (Chla) and the carotenoids (Car) content in the shoots. As significant increase was confirmed first for Chla whose content in the presence of NaClO at concentration 24 mL/L overextended that in the control by 3.5 times. The rank orders of stimulation for Chla and Car were NaClO > Savo > Dom Amor and Dom Amor > NaClO > Savo, respectively.

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Mechanisms of Cl^‐ transport contributing to salt tolerance

Cited by 406 publications

References 227 publications

Beneficial Effects of Potassium on Growth, Water Relations, Mineral Accumulation and Oxidative Damage of Beta vulgaris in Sodic-alkaline Condition

Beneficial Effects of Potassium on Growth, Water Relations, Mineral Accumulation and Oxidative Damage of Beta vulgaris in Sodic-alkaline Condition

Prediction of Salt Tolerance in Rice (Oryza Sativa) Based on Shoot Ion Content under Non-Stressed Conditions

Plant stress activated by chlorine from disinfectants prepared on the base of sodium hypochlorite

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Mechanisms of Cl‐ transport contributing to salt tolerance

Cited by 406 publications

References 227 publications

Beneficial Effects of Potassium on Growth, Water Relations, Mineral Accumulation and Oxidative Damage of Beta vulgaris in Sodic-alkaline Condition

Beneficial Effects of Potassium on Growth, Water Relations, Mineral Accumulation and Oxidative Damage of Beta vulgaris in Sodic-alkaline Condition

Prediction of Salt Tolerance in Rice (Oryza Sativa) Based on Shoot Ion Content under Non-Stressed Conditions

Plant stress activated by chlorine from disinfectants prepared on the base of sodium hypochlorite

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Mechanisms of Cl^‐ transport contributing to salt tolerance