Browsing by Author "Upadhyay M.K."
Now showing 1 - 4 of 4
Results Per Page
Sort Options
Item Biotechnological strategies for remediation of arsenic-contaminated soils to improve soil health and sustainable agriculture(Elsevier B.V., 2024) Chauhan R.; Awasthi S.; Tiwari P.; Upadhyay M.K.; Srivastava S.; Dwivedi S.; Dhankher O.P.; Tripathi R.D.Soil health is the foundation of sustainable agriculture, and its preservation is paramount in global arsenic (As) contamination challenges. Soil As contamination is a critical issue for environmental and agricultural sustainability. Rapid global urbanization and agricultural and industrial expansion release toxic metal (loid)s including As into the soil. Arsenic contamination disrupts the rhizosphere ecosystem, affecting plant health, microbial communities, and overall soil functionality. Ensuring soil health in the face of As contamination is imperative for human well-being and for developing a resilient, sustainable environment. This review signifies the need for comprehensive strategies to revitalize soil ecosystems, promoting resilience and long-term ecological balance. Advanced biotechnological approaches, particularly bioremediation including phytoremediation, microbial remediation, mycoremediation, nano-remediation, and other integrative strategies, are highlighted for their effectiveness in addressing As contamination and promoting soil health. Conventional physico-chemical techniques make soil unsuitable for agriculture by disrupting the microenvironment. Consequently, the urgent need for remediation of As-contaminated soil demands the adoption of eco-friendly and sustainable approaches, such as bioremediation, phytoremediation, and rhizoremediation, to enhance soil health. Development of transgenic lines and genetically modified organisms are effective tools in reducing the As burden. Bacteria including Sphingomonas desiccabilis, Bacillus subtilis and Bacillus idriensis expressing the arsM gene all show promising results to reduce the As burden. Transgenic rice, incorporating the arsM gene from Rhodopseudomonas palustris, demonstrated 10 times more volatile arsenicals and reduced As accumulation in the grain. Additionally, the use of As-hyperaccumulating plants and conventional methods, like chemical-assisted phytoextraction, show potential for decontaminating As- contaminated soil. Future research should explore the contributions of novel biotechnological strategies to enhance soil health in regions affected by As contamination. � 2024Item Emerging concern of nano-pollution in agro-ecosystem: Flip side of nanotechnology(Elsevier Masson s.r.l., 2024) Moulick D.; Majumdar A.; Choudhury A.; Das A.; Chowardhara B.; Pattnaik B.K.; Dash G.K.; Murmu K.; Bhutia K.L.; Upadhyay M.K.; Yadav P.; Dubey P.K.; Nath R.; Murmu S.; Jana S.; Sarkar S.; Garai S.; Ghosh D.; Mondal M.; Chandra Santra S.; Choudhury S.; Brahmachari K.; Hossain A.Nanomaterials (NMs) have proven to be a game-changer in agriculture, showcasing their potential to boost plant growth and safeguarding crops. The agricultural sector has widely adopted NMs, benefiting from their small size, high surface area, and optical properties to augment crop productivity and provide protection against various stressors. This is attributed to their unique characteristics, contributing to their widespread use in agriculture. Human exposure from various components of agro-environmental sectors (soil, crops) NMs residues are likely to upsurge with exposure paths may stimulates bioaccumulation in food chain. With the aim to achieve sustainability, nanotechnology (NTs) do exhibit its potentials in various domains of agriculture also have its flip side too. In this review article we have opted a fusion approach using bibliometric based analysis of global research trend followed by a holistic assessment of pros and cons i.e. toxicological aspect too. Moreover, we have also tried to analyse the current scenario of policy associated with the application of NMs in agro-environment. � 2024 Elsevier Masson SASItem Selenium � An environmentally friendly micronutrient in agroecosystem in the modern era: An overview of 50-year findings(Academic Press, 2024) Moulick D.; Mukherjee A.; Das A.; Roy A.; Majumdar A.; Dhar A.; Pattanaik B.K.; Chowardhara B.; Ghosh D.; Upadhyay M.K.; Yadav P.; Hazra S.; Sarkar S.; Mahanta S.; Santra S.C.; Choudhury S.; Maitra S.; Mishra U.N.; Bhutia K.L.; Skalicky M.; Obro?n�k O.; B�rek V.; Brestic M.; Hossain A.Agricultural productivity is constantly being forced to maintain yield stability to feed the enormously growing world population. However, shrinking arable and nutrient-deprived soil and abiotic and biotic stressor (s) in different magnitudes put additional challenges to achieving global food security. Though well-defined, the concept of macro, micronutrients, and beneficial elements is from a plant nutritional perspective. Among various micronutrients, selenium (Se) is essential in small amounts for the life cycle of organisms, including crops. Selenium has the potential to improve soil health, leading to the improvement of productivity and crop quality. However, Se possesses an immense encouraging phenomenon when supplied within the threshold limit, also having wide variations. The supplementation of Se has exhibited promising outcomes in lessening biotic and abiotic stress in various crops. Besides, bulk form, nano-Se, and biogenic-Se also revealed some merits and limitations. Literature suggests that the possibilities of biogenic-Se in stress alleviation and fortifying foods are encouraging. In this article, apart from adopting a combination of a conventional extensive review of the literature and bibliometric analysis, the authors have assessed the journey of Se in the �soil to spoon� perspective in a diverse agroecosystem to highlight the research gap area. There is no doubt that the time has come to seriously consider the tag of beneficial elements associated with Se, especially in the drastic global climate change era. � 2023 The AuthorsItem Sustainable water management in rice cultivation reduces arsenic contamination, increases productivity, microbial molecular response, and profitability(Elsevier B.V., 2024) Majumdar A.; Upadhyay M.K.; Giri B.; Yadav P.; Moulick D.; Sarkar S.; Thakur B.K.; Sahu K.; Srivastava A.K.; Buck M.; Tibbett M.; Jaiswal M.K.; Roychowdhury T.Arsenic (As) and silicon (Si) are two structurally competitive natural elements where Si minimises As accumulation in rice plants, and based on this two-year field trial, the study proposes adopting alternating wetting and drying (AWD) irrigation as a sustainable water management strategy allowing greater Si availability. This field-based project is the first report on AWD's impact on As-Si distribution in fluvio-alluvial soils of the entire Ganga valley (24 study sites, six divisions), seasonal variance (pre-monsoon and monsoon), rice plant anatomy and productivity, soil microbial diversity, microbial gene ontology profiling and associated metabolic pathways. Under AWD to flooded and pre-monsoon to monsoon cultivations, respectively, greater Si availability was achieved and As-bioavailability was reduced by 8.7 � 0.01�9.2 � 0.02% and 25.7 � 0.09�26.1 � 0.01%. In the pre-monsoon and monsoon seasons, the physiological betterment of rice plants led to the high rice grain yield under AWD improved by 8.4 � 0.07% and 10.0 � 0.07%, proving the economic profitability. Compared to waterlogging, AWD evidences as an optimal soil condition for supporting soil microbial communities in rice fields, allowing diverse metabolic activities, including As-resistance, and active expression of As-responsive genes and gene products. Greater expressions of gene ontological terms and complex biochemical networking related to As metabolism under AWD proved better cellular, genetic and environmental responsiveness in microbial communities. Finally, by implementing AWD, groundwater usage can be reduced, lowering the cost of pumping and field management and generating an economic profit for farmers. These combined assessments prove the acceptability of AWD for the establishment of multiple sustainable development goals (SDGs). � 2024 Elsevier B.V.
