Browsing by Author "Akansha Singh"

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Effect of different pre-treatments on seed germination and seedling growth of Adenanthera pavonina
(Gaurav Publications, 2022) Kamlesh Joshi; Pratima Kotadiya; Akansha Singh; Gaurav Shrimali; Esha Rami
Adenanthera pavonina is an important medicinal plant, popularly known as a red-bead tree. Due to its impermeable seed coat, seed show physiological dormancy. The present study aimed to carry out providing basic information on the best pre-treatment that will be helpful in breaking dormancy. Different parameters were used to treat seed dormancy. Seeds were subjected to pre-sowing seed treatment methods in pot viz., treatment with acid (KNO3, HCl, H2 SO4 ), organic solution (cow dung, cow urine, slurry), and growth regulators (GA3, NAA, IAA, IBA, BAP). The result of the study showed that germination percent was very low in a control condition, higher germination percentage (75%) and seedling length was found in seed soaked for treatment with cow dung slurry for 48 hours, and lowest germination rate and shoot length was found in IBA. These results indicated that seeds treated with different parameters has proved to be an effective technique to improve seedling grown and survival percentage compare to conventional seed germination methods. © 2022, Gaurav Society of Agricultural Research Information Centre. All rights reserved.
Green synthesis of silver nanoparticles and their potenial biological applications
(Elsevier, 2023) Palash Ahuja; Esha Rami; Akansha Singh; Dinesh Pathak
Since the introduction of the concept in the late 1950s, nanotechnology provides new ways of thinking for solving problems at the nanoscale level. Currently, many advancements in nanotechnology are taking place worldwide to help deal with various problems at our hands. Nanotechnology allows the manipulation of matter at a molecular or atomic level to produce novel materials and devices with new extraordinary properties. Various methods of production are broadly classified into three methods, i.e., physical, chemical, and biological. Green synthesis of the nanoparticles focuses on environmentally compatible materials such as bacteria, fungi, and plants for production. Nanoparticles previously produced by physical or chemical methods are now produced using biological materials, enhancing their properties and reducing their toxic effects. Due to recent advancements and the variety of uses for nanoparticles, interest has increased. Metal oxide nanoparticles have been identified as therapeutic agents with an extended half-life and therapeutic index, as well as less immunogenic properties. This review discusses the various synthesis methodologies, as well as various biomedical applications of NPs. © 2024 Elsevier Inc. All rights reserved.
Identification of genotype-specific RAPD markers for Asparagus racemosus
(2013) Akansha Singh; Ved Prakash Rai; B. Sinha
Twenty five diverse genotypes of Asparagus racemosus, were analyzed by RAPD markers for identifying genotypespecific markers. Out of 100 RAPD primers screened, only 25 were polymorphic. Among a total of 197 RAPD fragments amplified, 144 bands (73.09 %) were found polymorphic, revealing high intra-species genetic variation. Eight genotype-specific bands specific to seven A. racemosus genotypes were identified. These genotype-specific RAPD markers could potentially be used for genotype identification, their documentation, management, cultivation and conservation.
Investigation of supplemental ultraviolet-B-induced changes in antioxidative defense system and leaf proteome in radish (Raphanus sativus L. cv Truthful): An insight to plant response under high oxidative stress
(2010) Akansha Singh; Abhijit Sarkar; Suruchi Singh; S.B. Agrawal
Impact of supplemental UV-B (sUV-B) has been investigated on photosynthetic pigments, antioxidative enzymes, metabolites, and protein profiling of radish plants under realistic field conditions. Exposure of sUV-B leads to oxidative damage in plants. However, plants possess a number of UV-protection mechanisms including a stimulation of antioxidant defense system. It caused alteration in reactive oxygen species metabolism primarily by decreasing catalase activity vis-à-vis enhanced activities of other enzymatic (superoxide dismutase, ascorbate peroxidase, and glutathione reductase) and non-enzymatic (ascorbic acid) antioxidants. Qualitative analysis of samples also showed significant reductions in photosynthetic pigments and protein content. After sUV-B exposure, protein profile showed differences mainly at eight points-126.8, 84.8, 71.9, 61.5, 47.8, 40.6, 38.9, and 17.5 kDa, whereas protein(s) of 38.9 kDa showed increment. Results of the present investigation clearly showed the adverse effect of sUV-B on total biomass at final harvest. © 2010 Springer-Verlag.
Nanotechnology Interventions for Sustainable Plant Nutrition and Biosensing
(Springer Science and Business Media Deutschland GmbH, 2024) Akansha Singh; Priti Upadhyay; Esha Rami; Shravan Kumar Singh
The application of nanotechnology in agriculture is driven by the pressing need to meet the increasing global demand for food production. Nanoparticles, owing to their incredibly small size, bridge the gap between macroscopic materials and atomic or molecular structures, making them ideal for various agricultural applications. They have the potential to revolutionize conventional farming practices by optimizing nutrient utilization, resource management, and environmental sustainability. The impact of nanotechnology on agriculture spans a wide range of areas, including nutrient delivery, pest management, soil fertility improvement, precision farming, water management, post-harvest preservation, environmental sustainability, smart delivery systems, genetic modification, and nanofertilizers (NFs). NFs, in particular, have garnered attention for their ability to improve nutrient delivery and enhance crop development, while minimizing environmental harm and reducing costs compared to traditional fertilizers. These nano-sized nutrients significantly enhance nutrient bioavailability to plants, ultimately promoting crop growth and yield. However, the application of nanomaterials in agriculture also raises concerns regarding their potential impact on soil microbial diversity, which plays a crucial role in maintaining soil health. In addition to NFs, this article discusses the role of carbon nanotubes (CNTs) in agriculture. CNTs possess unique properties that can improve plant growth, root development, and resistance to salinity and disease. Furthermore, the article also deals with nanobiosensors and their application in precision agriculture. Moreover, this article addresses the importance of considering the toxicity, biosafety, and regulatory aspects when implementing nanotechnology in agriculture to maximize its potential benefits while safeguarding natural and environmental resources. © The Author(s) under exclusive licence to Sociedad Chilena de la Ciencia del Suelo 2024.
The Impact of Climate Change on Crop Production and Combat Strategies
(CRC Press, 2023) Akansha Singh; Esha Rami; Priti Upadhyay; Ajit K. Gangawane
Climate change is a serious concern worldwide. The global average surface temperature is increasing day by day and is expected to be increased by 2°C in the coming 50 years. More frightening is the fact that close to 50 million people worldwide may face hunger and malnutrition due to climate change impact on agriculture. Immediate action is required to sustainably use the resources for increased production and productivity in the agricultural field. Increased GHGs emissions, such as carbon dioxide (CO2), nitrous oxide (NO2), methane (CH4), are causing global warming. Developing climate-resilient crop varieties that are able to tolerate heat, drought, salinity, cold, and freeze stress through conventional and advanced crop improvement technologies will help in combating the climate change. This book chapter summarizes the GHG emission and their effect on global warming and agriculture, climate change’s impact on crop yield and nutrition. The employment of various agronomic measures and conservation agriculture for combating the climate change effect were covered. Additionally, the conventional and advanced breeding technologies for stress tolerance were also discussed. © 2023 selection and editorial matter, M. H. Fulekar and Rama Shanker Dubey; individual chapters, the contributors.