Samiksha Singh

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Heavy metal contamination of soil and water causing toxicity/stress has become one important constraint to crop productivity and quality. This situation has further worsened by the increasing population growth and inherent food demand. It has been reported in several studies that counterbalancing toxicity due to heavy metal requires complex mechanisms at(More)
Reactive oxygen species (ROS) are generated inevitably in the redox reactions of plants, including respiration and photosynthesis. In earlier studies, ROS were considered as toxic by-products of aerobic pathways of the metabolism. But in recent years, concept about ROS has changed because they also participate in developmental processes of plants by acting(More)
The present study is aimed to investigate whether ascorbate-glutathione cycle (AsA-GSH cycle) or thiol metabolism is involved in the regulation of arsenate (AsV)-induced oxidative stress and tolerance in ridged Luffa seedlings. AsV significantly (p < 0.05) declined the growth of Luffa seedlings which was accompanied by the enhanced accumulation of As. The(More)
Seed priming is a crucial method to induce tolerance capabilities in plants against various abiotic stresses. Seed priming is associated with an induction of number of physiological and biochemical changes in plants by the treatment of natural and/or synthetic compounds to the seeds before their germination. The aim of this study was to investigate whether(More)
The present study investigates ameliorative effects of nitric oxide (NO) against zinc oxide nanoparticles (ZnONPs) phytotoxicity in wheat seedlings. ZnONPs exposure hampered growth of wheat seedlings, which coincided with reduced photosynthetic efficiency (Fv/Fm and qP), due to increased accumulation of zinc (Zn) in xylem and phloem saps. However, SNP(More)
Reactive oxygen species (ROS), a by-product of aerobic metabolism were initially studied in context to their damaging effect but recent decades witnessed significant advancements in understanding the role of ROS as signaling molecules. Contrary to earlier views, it is becoming evident that ROS production is not necessarily a symptom of cellular dysfunction(More)
Modern agriculture is facing significant challenges due to the high complexity of field conditions caused not only by currently ongoing global climatic change but also by stress combinations. Recent research is focusing on the molecular mechanisms controlling stress responses in plants. Many efforts have been made to uncover the complex but well-coordinated(More)
The critical source of information in plants is light, which is perceived by receptors present in plants and animals. Receptors present in plant and animal system regulate important processes, and knowing the chromophores and signalling domains for each receptor could pave a way to trace out links between these receptors. The signalling mechanism for each(More)
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