Plant nitrogen characteristics of a semi‐salt‐tolerant zucchini variety to sodium chloride treatments

Víllora, Gemma; Pulgar, G.; Moreno, Diego A.; Romero, Luís C.

doi:10.1080/01904169809365568

Cited by 6 publications

(2 citation statements)

References 21 publications

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“…It has been reported that higher osmolyte concentration helps in the maintenance of comparatively higher relative water content and antioxidant enzyme activity (Smirnoff and Cumbes 1989). In cucumber (Botia et al 2005;Shiqing et al 2006) and in melon (Villora et al 1998), similar trends of increase in proline with increase in salt concentration were reported. However, proline accumulation cannot be used as a sole criterion for salt tolerance, as it also accumulates under other stresses such as high temperature, drought and starvation (Hong et al 2000).…”

Section: Growth Physiological and Biochemical Parameterssupporting

confidence: 72%

Alleviation of the adverse effects of salinity stress in wheat (Triticum aestivum L.) by seed biopriming with salinity tolerant isolates of Trichoderma harzianum

et al. 2011

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Salt stress is one of the major abiotic stresses limiting crop growth and productivity. This work investigated the potential of five ST isolates of Trichoderma harzianum (Th-13, Th-14, Th-19, Th-33 and Th-50) applied through seed biopriming in reducing the detrimental effects of salinity stress on wheat (Triticum aestivum L.). Growth, physiological and biochemical parameters were studied to characterize salt tolerance. One factor was treatments (T1, T2, T3, T4, T5 and T6) and second factor was four levels of salt stress viz., 0, 2, 4 and 6 dsm −1 . In germination test, most of the isolates (Th-14, Th-19 and Th-13) were effective in improving germination percentage and reducing RPG during salinity stress. Seedlings raised from ST Trichoderma isolates had significantly higher root and shoot lengths, CC and MSI than control at all stress levels. The treatments Th-14, Th-19 and Th-13 showed lower accumulation of MDA content whereas proline content and phenolics were higher in treated plants under both nonsaline and saline conditions. Highest MDA content was observed in control at salt stress level of 6 dSm −1 .

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Section: Growth Physiological and Biochemical Parameterssupporting

confidence: 72%

Alleviation of the adverse effects of salinity stress in wheat (Triticum aestivum L.) by seed biopriming with salinity tolerant isolates of Trichoderma harzianum

et al. 2011

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“…It has been reported that higher osmolyte concentration helps in the maintenance of comparatively higher relative water content and antioxidant enzyme activity (Smirnoff and Cumbes 1989). In cucumber (Botia et al 2005;Martinez et al 1994;ShiQing et al 2006) and in melon (Villora et al 1998), the similar trends of increase in proline and soluble sugars with the increase in salt concentration was reported. However, proline accumulation cannot be used as a sole criterion for salt tolerance, as it also accumulates under other stresses such as high temperature, drought and starvation (Hong et al 2000).…”

Section: Biochemical and Physiological Traitssupporting

confidence: 67%

Effect of salt stress on cucumber: Na+–K+ ratio, osmolyte concentration, phenols and chlorophyll content

et al. 2009

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A pot experiment with 17 diverse genotypes of cucumber with four levels of salt stress viz., 0, 2, 4 and 6 dS m -1 was carried out during 2006. ANOVA revealed significant differences amongst genotypes and genotype 9 salt stress interaction indicating the genetic variability and differential response of the genotypes to different salt stress levels. The salt stress adversely affected the biochemical parameters; effects were severe under 4 dS m -1 . No genotype could survive at 6 dS m -1 . Sodium content, Na ? -K ? ratio, proline, reducing sugars, phenol and yield reduction (%) increased significantly as the salt stress increased. Potassium, chlorophyll, membrane stability index and fruit yield decreased significantly under salt stress in all genotypes. However, the genotypes CRC-8, CHC-2 and G-338 showed lower accumulation of sodium, lesser depletion of potassium, lower Na ? -K ? ratio and higher accumulation of proline, reducing sugars, phenols, better membrane stability and lower yield reduction (%) under salt stress, while CH-20 and DC-1 were sensitive to salt stress. Thus, a combination of traits such as higher membrane stability, lower Na ? -K ? ratio, higher osmotic concentration and selective uptake of useful ions and prevention of over accumulation of toxic ions contribute to salt stress tolerance in cucumber. These traits would be useful selection criteria during salt stress breeding in cucumber.

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Nitrogen and NaCl salinity effects on the growth and nutrient acquisition of the grasses Aeluropus littoralis, Catapodium rigidum, and Brachypodium distachyum

Barhoumi

Atia

Rabhi

et al. 2010

Z. Pflanzenernähr. Bodenk.

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Salinity and low nitrogen availability are important growth‐limiting factors for most plants. Our objective was to assess the influence of nitrogen (N) and salt levels on the growth and mineral nutrition of three forage grasses of varying salt resistance which are widely found in Tunisian salt lands, Aeluropus littoralis, Catapodium rigidum, and Brachypodium distachyum. Their response to salt and N interaction has not been studied and further investigations are necessary. Twenty day–old plantlets were hydroponically cultivated in Hewitt's nutrient solution. Half the plants were then exposed to 100 mM NaCl and the other half to no NaCl, and N was supplied at 0.5 or 5.0 mM N as NH4NO3. Plants were harvested after 60 d growth. Saline treatment (100 mM NaCl) decreased growth of B. distachyum (a relatively salt‐sensitive plant), but no significant effect was noted for A. littoralis (a relatively salt‐resistant plant) in both low– and high–N availability treatments. However, the effect of 100 mM NaCl on growth of C. rigidum (a moderately salt‐resistant plant) depended on N level. Increasing N availability and NaCl did not influence phosphate, sulfate, calcium, and magnesium concentrations in both A. littoralis and C. rigidum, but increased N supply reduced shoot sodium and chloride (Cl–) accumulation. Potassium acquisition in A. littoralis and C. rigidum plants was severely depressed by increasing N availability under saline and nonsaline conditions, respectively. In these species, the increase of nitrate accumulation via N was attenuated by salinity. In contrast, total N content and allocation toward shoots were enhanced in these conditions, especially in A. littoralis, the most resistant species. It appears that increasing N availability at moderate salt levels has a beneficial effect on growth of species with high and moderate salt resistance, but not on species with low resistance to salinity.

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Plant nitrogen characteristics of a semi‐salt‐tolerant zucchini variety to sodium chloride treatments

Cited by 6 publications

References 21 publications

Alleviation of the adverse effects of salinity stress in wheat (Triticum aestivum L.) by seed biopriming with salinity tolerant isolates of Trichoderma harzianum

Alleviation of the adverse effects of salinity stress in wheat (Triticum aestivum L.) by seed biopriming with salinity tolerant isolates of Trichoderma harzianum

Effect of salt stress on cucumber: Na+–K+ ratio, osmolyte concentration, phenols and chlorophyll content

Nitrogen and NaCl salinity effects on the growth and nutrient acquisition of the grasses Aeluropus littoralis, Catapodium rigidum, and Brachypodium distachyum

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