Effects of NaCl on water relations and cell wall elasticity and composition of red‐osier dogwood (<i>Cornus stolonifera</i>) seedlings

Mustard, Jennifer; Renault, Sylvie

doi:10.1111/j.1399-3054.2004.00322.x

Cited by 38 publications

(21 citation statements)

References 45 publications

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“…However, under drought exposure, expression patterns of fructokinase can vary a lot depending on gene isoforms (Xue et al 2008). In both stresses, we also observed an increased expression of a gene coding for a xylose isomerase; this gene catalyses the conversion of D-xylulose into D-xylose, a constituent of the cell wall hemicellulose, which is involved in cell wall modification and is known to accumulate during salt exposure (Mustard and Renault 2004).…”

Section: Common Responses To Cold and Salt Stressmentioning

confidence: 79%

Towards a synthetic view of potato cold and salt stress response by transcriptomic and proteomic analyses

Evers¹,

Legay²,

Lamoureux³

et al. 2012

Plant Mol Biol

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Potato can suffer from several abiotic stresses such as cold temperature, high soil salinity, lack of water or heavy metal exposure, to name a few. They are known to affect plant growth as well as productivity, with differential regulations at several levels. Potato response to cold and salt exposure was investigated at both transcriptomic and proteomic levels in a growth chamber experiment. Cold exposure in potato resulted in a higher number of significantly differentially regulated genes compared to salt exposure, whereas there were nearly three times more differentially regulated proteins after salt exposure when compared to cold exposure. The allocation of up and down-regulated genes at the functional category level also differed between salt and cold exposure although common trends, previously described in various abiotic stresses, were observed. In both stresses, the majority of photosynthesis-related genes were down-regulated whereas cell rescue and transcription factor-related genes were mostly up-regulated. In the other functional categories no common trend was observed; salt exposure results displayed a strong down-regulation of genes implicated in primary metabolism, detoxication apparatus and signal transduction, whereas upon cold exposure, up and down-regulated genes were similar in number. At the proteomic level, the abundance of the majority of identified proteins was increased except for the photosynthesis-related proteins, which were mostly less abundant after both salt and cold exposure. Common responses between salt and cold stress and specific responses inherent to these abiotic stresses are described.

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Section: Common Responses To Cold and Salt Stressmentioning

confidence: 79%

Towards a synthetic view of potato cold and salt stress response by transcriptomic and proteomic analyses

Evers¹,

Legay²,

Lamoureux³

et al. 2012

Plant Mol Biol

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“…Under drought stress, the osmotic adjustment is mainly achieved through the accumulation of organic solutes synthesized by the plant, while in salt stress the accumulated solutes are mainly the inorganic ions (Na + and Cl − ) readily available in the soil solution (Parida and Das, 2005). The results of this study show that moderate salinity did not change cell wall elasticity of the shoot tissue in C. laevis, suggesting that elastic adjustment did not play a role in the adaptation mechanism, although some changes in the cell wall composition may have occurred, as the thickness and chemical composition of the cell wall, which could contribute to the decrease in growth recorded in this species in response to salt stress (Mustard, 2004;Sassi et al, 2010;Suárez, 2011). …”

Section: Discussionmentioning

confidence: 90%

Comparison of individual and combined effects of salinity and deficit irrigation on physiological, nutritional and ornamental aspects of tolerance in Callistemon laevis plants

Álvarez

Sánchez-Blanco

2015

Journal of Plant Physiology

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SummaryThe effect of water deficit, salinity and both applied simultaneously on several physiological and morphological parameters in the ornamental plant Callistemon laevis was studied to identify the tolerance mechanisms developed by this species to these sources of stress and to evaluate their adaptability to such conditions. C. laevis plants were grown in pots outdoors and subjected to four irrigation treatments lasting ten months: control (0.8 dS m -1 , 100% water holding capacity), water deficit (0.8 dS m -1 , 50% of the amount of water supplied in control), saline (4.0 dS m -1 , same amount of water supplied as control) and saline water deficit (4.0 dS m -1 , 50% of the water supplied in the control). Water and saline stress when applied individually led to a reduction of 12 and 39% of total biomass, respectively, while overall plant quality (leaf color and flowering) was unaffected. However, saline water deficit affected leaf color and flowering and induced an excessive decrease of growth (68%) due to leaf tissue dehydration and a high leaf Cl and Na concentration. Biomass partitioning depended no only on the amount of water applied, but also on the electrical conductivity of the water. Water stress induced active osmotic adjustment and decreased leaf tissue elasticity. Although both Na and Cl concentrations in the plant tissues increased with salinity, Cl entry through the roots was more restricted. In plants submitted to salinity individually, Na tended to remain in the roots and stems, and little reached the leaves. However, plants simultaneously submitted to water and saline stress were not able to retain this ion in the woody parts. The decrease in stomatal conductance and photosynthesis was more marked in the plants submitted to both stresses, the effect of which decreased photosynthesis, and this together with membrane damage, could delay plant recovery. The results show that the combination of deficit irrigation and salinity in C. laevis is not recommended since it magnifies the adverse effects of either when applied individually.Keywords: Gas exchange; Ion uptake; Ornamental potted plant; Water relations; Water use efficiency; Elastic modulus.Abbreviations: C, control; C*, chroma; DW, dry weight; EC, electrical conductivity; gs, stomatal conductance; hº, hue angle; J, absorption rate of ions by the root system; L*, lightness; P, significance; Pn, net photosynthesis rate; P-V, pressure-volume; RWCtpl, relative water content at turgor loss point ; S, saline treatment; W, deficit irriation treatment; WUE, water use efficiency of production; W+S, simultaneous saline and water stress treatment.; Ψl, leaf water potential; Ψs, stem water potential; Ψ100s, leaf osmotic potential at full turgor; Ψtpl, leaf water potential at turgor loss point. ε; bulk modulus of elasticity.3

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“…Moderate salinity did not change the cell wall elasticity of the shoot tissue in C. laevis, however, suggesting that elastic adjustment did not play a role in the adaptation mechanism, although some changes in the cell wall composition may have occurred (such as in cell wall thickness and chemical composition, for example), which could have contributed to the decrease in growth recorded in this species in response to salt stress [165,166].…”

Section: Plant Osmotic Regulationmentioning

confidence: 99%

Plant Responses to Salt Stress: Adaptive Mechanisms

Acosta‐Motos¹,

Ortuño²,

Bernal‐Vicente³

et al. 2017

Preprint

360

200

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This review deals with the adaptive mechanisms that plants can implement to cope with the challenge of salt stress. Plants tolerant to NaCl implement a series of adaptations to acclimate to salinity, including morphological, physiological and biochemical changes. These changes include increases in the root/canopy ratio and in the chlorophyll content in addition to changes in the leaf anatomy that ultimately lead to preventing leaf ion toxicity, thus maintaining the water status in order to limit water loss and protect the photosynthesis process. Furthermore, we deal with the effect of salt stress on photosynthesis and chlorophyll fluorescence and some of the mechanisms thought to protect the photosynthetic machinery, including the xanthophyll cycle, photorespiration pathway, and water-water cycle. Finally, we also provide an updated discussion on salt-induced oxidative stress at the subcellular level and its effect on the antioxidant machinery in both salt-tolerant and salt-sensitive plants. The aim is to extend our understanding of how salinity may affect the physiological characteristics of plants.

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Effects of NaCl on water relations and cell wall elasticity and composition of red‐osier dogwood (Cornus stolonifera) seedlings

Cited by 38 publications

References 45 publications

Towards a synthetic view of potato cold and salt stress response by transcriptomic and proteomic analyses

Towards a synthetic view of potato cold and salt stress response by transcriptomic and proteomic analyses

Comparison of individual and combined effects of salinity and deficit irrigation on physiological, nutritional and ornamental aspects of tolerance in Callistemon laevis plants

Plant Responses to Salt Stress: Adaptive Mechanisms

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