Browsing by Author "Sravani, Bana"

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    A review on phytotoxicity and defense mechanism of silver nanoparticles (AgNPs) on plants
    (Springer Science and Business Media B.V., 2023) Kumar, Sumit; Masurkar, Prahlad; Sravani, Bana; Bag, Dipanjali; Sharma, Kamal Ravi; Singh, Prashant; Korra, Tulasi; Meena, Mukesh; Swapnil, Prashant; Rajput, Vishnu D.; Minkina, Tatiana
    Silver nanoparticles (AgNPs) are noteworthy used nanomaterials in a wide array of fields, particularly in the agricultural sector. Plants play a multifarious role in the ecosystem and provide a source of food for mankind. The responsibility of the scientific community is to recognize the deleterious impact of AgNPs (1�100�nm in size) on critical crop growth and development of plants, which is required for the assessment of environmental threats to plant, human, and animal health. The continued use of AgNPs in agriculture areas may have negative effects on plant biochemical and physiological responses. The current context focused mainly on AgNPs uptake, transport, and accumulation on crop plants and summarizes different levels of phytotoxicity of AgNPs on plant functions and focused on mechanisms of phytotoxicity employed by AgNPs. Moreover, some tolerance mechanisms and various survival strategies developed by plants under AgNPs toxicity are discussed. This background provides comprehensive information necessary to facilitate profound understanding of the toxic impacts of AgNPs on crop plants. � 2023, The Author(s), under exclusive licence to Springer Nature B.V.
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    Psychrophilic microbes: Biodiversity, beneficial role and improvement of cold stress in crop plants
    (Elsevier, 2022) Kumar, Sumit; Sravani, Bana; Korra, Tulasi; Behera, Lopamudra; Datta, Diptanu; Dhakad, Pushpendra Kumar; Yadav, M.K.
    The beneficial microbes play an important role in farming, medical and industrial processes. The precious microbes belong to varied groups such as archaea, bacteria and fungi which could interact with plant species and also sort out from different habitats like extreme environments (acidic, alkaline, drought, pressure, salinity and temperatures). Structural adaptations like Cell envelope, Cell membrane, Cryoprotection, Heat shock proteins, Cold shock proteins, RNA degradosome, Enzymes, Chaperones and Metabolic processes microbes can tolerate under stress conditions. Psychrophilic microbes lead to a beneficial role in Biological Nitrogen Fixation (BNF), the Solubilization of nutrients and also for antibiotic production like DAPG, HCN, Phenazine, Oligomycin A, Kanosamine, Tensin, Tropolone, Pyrrolnitrin and Zwittermicin will suppress the disease growth. Microorganisms with therapeutic benefits can be used for sustainable agriculture and human health. Sustainable agriculture requires the use of different tactics to boost crop yields and food grain production through the introduction of terms of environmental issues. Psychrophilic plant growth-promoting (PGP) microbes can strongly affect crop growth under chilly environments through biological N2-fixation, siderophore production, hormone-regulating plant growth and antagonism activities � 2022 Elsevier Inc. All rights reserved.
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    Role of microbial consortia in remediation of soil, water and environmental pollution caused by indiscriminate use of chemicals in agriculture: Opportunities and challenges
    (Elsevier, 2022) Behera, Lopamudra; Datta, Diptanu; Kumar, Sunil; Kumar, Sumit; Sravani, Bana; Chandra, Ram
    After Green Revolution, the usage of chemical pesticides and fertilizers has been increased to enhance the yield of crops to feed the burgeoning world�s population by managing several pests. But the increase in anthropogenic activities has led to increased pollution on the earth�s surface through indiscriminate use of the harmful chemicals. Excess and improper disposal of nutrients and toxic compounds not only hampers the physical and chemical properties of soil, but also pollute the ground water via surface runoff or leaching which directly or indirectly affects lives of plants, animals, birds, marine organisms and human beings allowing bio amplification to damage the ecological structure. Stubble burning is another harmful approach to achieve extensive cropping which pollutes the environment by producing greenhouse gases and also affects the beneficial soil microorganisms and crop development. However, chemical contaminants can be eradicated from polluted soil and water by the use of efficient microorganisms. Microorganisms degrade the complex toxic compounds with the aid of enzymes into simple, non-toxic inorganic compounds and they are very efficient in decomposing the crop residues. However, for rapid degradation, research has been focused on microbial consortium comprising of more than one microorganism to enhance the efficiency of biodegradation due to their capacity for synergistic metabolism. In this book chapter, we have discussed about several applications microbial consortia in remediation of soil, water and environmental pollution caused by indiscriminate use of chemicals in agriculture. � 2022 Elsevier Inc. All rights reserved.