Regulatory Role of Silicon in Mediating Differential Stress Tolerance Responses in Two Contrasting Tomato Genotypes Under Osmotic Stress

@article{Ali2018RegulatoryRO,
  title={Regulatory Role of Silicon in Mediating Differential Stress Tolerance Responses in Two Contrasting Tomato Genotypes Under Osmotic Stress},
  author={Nusrat Ali and Adri{\'a}n Schwarzenberg and Jean Claude Yvin and Seyed Abdollah Hosseini},
  journal={Frontiers in Plant Science},
  year={2018},
  volume={9}
}
Previous studies have shown the role of silicon (Si) in mitigating the adverse effect of drought stress in different crop species. However, data are lacking on a comparison of drought tolerant and drought sensitive crop cultivars in response to Si nutrition. Therefore, the aim of this study was to elucidate the mechanism (s) by which two contrasting tomato genotypes respond to Si nutrition under osmotic stress condition. Two tomato lines contrasting in their response to drought stress were… 

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References

SHOWING 1-10 OF 85 REFERENCES
Induction of Barley Silicon Transporter HvLsi1 and HvLsi2, increased silicon concentration in the shoot and regulated Starch and ABA Homeostasis under Osmotic stress and Concomitant Potassium Deficiency
TLDR
Si may effectively improve stress tolerance under K deficient condition in particular when additional stress like osmotic stress interferes, and is most likely mediated also by ABA homeostasis and active cytokinin isopentenyl adenine.
Metabolic and phenotypic responses of greenhouse-grown maize hybrids to experimentally controlled drought stress.
TLDR
Several metabolites that displayed conserved responses to drought as well as metabolites whose levels correlated well with certain physiological traits were highlighted.
Silicon-mediated changes in radial hydraulic conductivity and cell wall stability are involved in silicon-induced drought resistance in tomato
TLDR
Though the silicon-mediated drought avoidance and drought tolerance can maintain physiological activities of tomato at relatively lower water potential, the maximal duration at which Si induced drought resistance was 3 or 5 days, and mitigative effects of Si were weakened.
Silicon Application Alleviates Drought Stress in Wheat Through Transcriptional Regulation of Multiple Antioxidant Defense Pathways
TLDR
Elevated levels of gene expression and low malondialdehyde and H2O2 contents indicate that Si plays a pivotal role in the coordinated transcriptional regulation of multiple antioxidant defenses in response to drought.
Silicon Improves the Tolerance to Water-Deficit Stress Induced by Polyethylene Glycol in Wheat (Triticum aestivum L.) Seedlings
Drought stress usually causes a serious yield reduction in wheat production. Silicon (Si) has been reported to be able to alleviate drought stress damage; however, the mechanism is still poorly
A Potential Role of Flag Leaf Potassium in Conferring Tolerance to Drought-Induced Leaf Senescence in Barley
TLDR
Genotypes with a high K nutritional status in the flag leaf show superior drought tolerance by promoting ABA degradation but attenuating starch degradation which delays flag leaf senescence, and may represent a useful trait for the selection of drought-tolerant barley cultivars.
Application of silicon improves salt tolerance through ameliorating osmotic and ionic stresses in the seedling of Sorghum bicolor
Silicon has been widely reported to have a beneficial effect on improving plant tolerance to biotic and abiotic stresses. However, the mechanisms of silicon in mediating stress responses are still
Overexpression of annexin gene AnnSp2, enhances drought and salt tolerance through modulation of ABA synthesis and scavenging ROS in tomato
TLDR
Results indicate that overexpression of AnnSp2 in transgenic tomato improves salt and drought tolerance through ABA synthesis and the elimination of ROS.
Silicon Alleviates Drought Stress of Rice Plants by Improving Plant Water Status, Photosynthesis and Mineral Nutrient Absorption
TLDR
Results suggested that silicon application was useful to increase drought resistance of rice through the enhancement of photochemical efficiency and adjustment of the mineral nutrient absorption in rice plants.
Effects of External Potassium (K) Supply on Drought Tolerances of Two Contrasting Winter Wheat Cultivars
TLDR
It is concluded that drought-tolerant wheat combined with adequate external K supply may be a promising strategy for better growth in arid and semi-arid regions.
...
...