Browsing by Author "Pankaj Kumar Mishra"

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Agriculturally important microbes for sustainable agriculture
(Springer Singapore, 2017) Vijay Singh Meena; Pankaj Kumar Mishra; Jaideep Kumar Bisht; Arunava Pattanayak
This book presents a compilation of case studies from different countries on achieving agricultural sustainability. The book stresses that, in order to meet the needs of our rapidly growing population, it is imperative to increase agricultural productivity. If global food production is to keep pace with an increasing population, while formulating new food production strategies for developing countries, the great challenge for modern societies is to boost agricultural productivity. Today, the application of chemicals to enhance plant growth or induced resistance in plants is limited due to the negative effects of chemical treatment and the difficulty of determining the optimal concentrations to benefit the plant. In the search for alternative means to solve these problems, biological applications have been extensively studied. Naturally occurring plant-microbe-environment interactions are utilized in many ways to enhance plant productivity. As such, a greater understanding of how plants and microbes coexist and benefit one another can yield new strategies to improve plant productivity in the most sustainable way. Developing sustainable agricultural practices requires understanding both the basic and applied aspects of agriculturally important microorganisms, with a focus on transforming agricultural systems from being nutrient-deficient to nutrient-rich. This work is divided into two volumes, the aim being to provide a comprehensive description and to highlight a holistic approach, respectively. Taken together, the two volumes address the fundamentals, applications, research trends and new prospects of agricultural sustainability. Volume one consists of two sections, with the first addressing the role of microbes in sustainability, and the second exploring beneficial soil microbe interaction in several economically important crops. Section I elucidates various mechanisms and beneficial natural processes that enhance soil fertility and create rhizospheric conditions favourable for high fertility and sustainable soil flora. It examines the mechanism of action and importance of rhizobacteria and mycorrhizal associations in soil. In turn, section II presents selected case studies involving economically important crops. This section explains how agriculturally beneficial microbes have been utilized in sustainable cultivation with high productivity. Sustainable food production without degrading the soil and environmental quality is a major priority throughout the world, making this book a timely addition. It offers a comprehensive collection of information that will benefit students and researchers working in the field of rhizospheric mechanisms, agricultural microbiology, biotechnology, agronomy and sustainable agriculture, as well as policymakers in the area of food security and sustainable agriculture. © Springer Nature Singapore Pte Ltd. 2017. All rights reserved.
Arbuscular mycorrhiza: a viable strategy for soil nutrient loss reduction
(Springer Verlag, 2019) Manoj Parihar; Vijay Singh Meena; Pankaj Kumar Mishra; Amitava Rakshit; Mahipal Choudhary; Ram Prakash Yadav; Kiran Rana; Jaideep Kumar Bisht
Arbuscular mycorrhiza fungi’s (AMF) role in plant nutrition and stress management is well known, but very few researches and studies have been conducted so far on the fungal ability to reduce different nutrient losses (runoff, leaching and volatilization) from the soil system. This important ecosystem service of AMF had been neglected largely. From the recent findings, it has been confirmed that mycorrhizal symbiosis has potential to check the losses of applied nutrients. The role of soil biota in nutrient cycling is indispensable and determines the nutrient availability to plants. Among these biota, AMF’s association with plants is the most prevalent, but the exact mechanisms followed by AMF in nutrient cycling, transformation and reducing nutrient loss ability are still inconclusive. In this review, we will try to unlock this particular aspect of AMF which is important to achieve global food demand in a sustainable way. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
Arbuscular Mycorrhizal Fungi: Abundance, Interaction with Plants and Potential Biological Applications
(Springer, 2020) Manoj Parihar; Manoj Chitara; Priyanaka Khati; Asha Kumari; Pankaj Kumar Mishra; Amitava Rakshit; Kiran Rana; Vijay Singh Meena; Ashish Kumar Singh; Mahipal Choudhary; Jaideep Kumar Bisht; Hanuman Ram; Arunava Pattanayak; Gopal Tiwari; Surendra Singh Jatav
Beneficial microbes associated with plant roots play an important role to achieve higher agriculture production for burgeoning population in sustainable way. Among various microbes, arbuscular mycorrhizal (AM) fungi interaction with higher land plants is unique as they occupy position both inside and outside of roots. AM fungi as a natural symbionts of land plants provide various ecological services, in particular by improving plant water and nutrition availability, soil health and fertility, alleviating stress condition and wasteland management. Mycorrhizae as a broader group of fungi include seven types of members, i.e. arbuscular, ecto, ectendo, arbutoid, monotropoid, ericoid and orchidaceous, while arbuscular and ectomycorrhizae are the most abundant and ubiquitous. In this chapter, we focus on AM fungi and provide an overview on mycorrhizal interaction, benefits, processes, production development and potential application domain under various conditions. Along with recent advances in AM fungi role under various stress condition, reclamation of problematic wastelands and production aspects, we also discuss about the basic features of AM fungi with past developments to provide an overall glimpse of this plant-fungal interaction. In spite of its growing trends, AM fungi’s current application and market sharing are far below to full potential. Regarding this, current challenges, constraints and strategies for future road map to overcome these problems are also discussed briefly. © Springer Nature Singapore Pte Ltd. 2020.
Cation doped approach for photodegradation of 4-chlorophenol by highly efficient solar active NiS photocatalyst: The case of Cu2+ doping
(Elsevier B.V., 2023) Prayas C. Patel; Pankaj Kumar Mishra; Jyoti Kashyap; Surabhi Awasthi
This study reports an efficient photodegradation of 4-chlorophenol using Cu2+ doped nickel sulfide (NiS) nanoparticles. Our study provides a facile method to synthesize Cu2+ doped NiS nanoparticles by partial polyol method and structurally validates the formation of single phased random-shaped particles. Cu2+ doping in NiS matrix results in a red shift of the absorption band edge, thus lowering the band gap from 3.62 to 2.98 eV and creating electron trapping centers that prevent electron-hole recombination. The presence of such electron trapping centers was attributed to oxygen vacancies which were justified from the appearance of g-signal in electron paramagnetic resonance analysis. Photodegradation study of 4-chlorophenol by Cu2+ doped NiS nanoparticles under ambient solar light showed significant improvement in degradation efficiency up to 90 % as compared to 19 % for undoped NiS nanoparticles. Furthermore, increased degradation efficiency was also backed by total organic carbon (TOC) analysis of the mineralization ability of Cu2+ doped NiS nanoparticles. Moreover, scavenging trapping analysis showed holes, ⋅OH and superoxide radicals as reactive oxidative species (ROS) primarily responsible for increased photodegradation efficiency. Thus, the synthesized Cu doped NiS nanoparticles proved to be an efficient catalyst, which could be used as a potential candidate for industrial photocatalytic applications under ambient solar light. © 2022 Elsevier B.V.
Enhanced Photocatalytic Activity and Low Temperature Magnetic/Transport Study of Cu-Doped ZnS-Based Diluted Magnetic Semiconductor Nanoparticles
(Springer New York LLC, 2019) Prayas Chandra Patel; Surajit Ghosh; Pankaj Kumar Mishra; P.C. Srivastava
Diluted magnetic semiconductors (DMSs), having interesting magnetic/transport properties, are currently being explored in photocatalytic application as well. This report presents photocatalytic and low temperature magnetic/transport study of chemically synthesized 3-5 nm sized cubic Zn1-xCuxS (0 ≤ x ≤ 0.04) DMS nanoparticles. Both studies have their own importance, former relates to dye degradation, while later attempts to understand origin of magnetic behavior in DMSs (which is still debatable). As a photocatalyst, Cu doped ZnS NPs showed enhanced degradation-efficiency for methylene blue dye. Magnetization study showed enhanced magnetic moment in Cu doped samples, which in the low temperature regime got further enhanced and was understood due to defect induced ferromagnetism. Low temperature transport study showed the decrease in resistivity of the Cu doped samples and was understood in terms of defects states created due to doping of the Cu ions and governed by conduction mechanism, namely thermal activation and variable range hopping. © 2019, The Minerals, Metals & Materials Society.
Fe-As Intermetallic Alloys: A Way Out for Sodium-Ion Batteries
(American Chemical Society, 2023) Prayas Chandra Patel; Surabhi Awasthi; Pankaj Kumar Mishra; Priyanka Lakharwal; Jyoti Kashyap
Intermetallic alloy anodes with high theoretical sodiation capacities are highly sought for next-generation sodium-ion batteries (SIBs). Here, we demonstrate the fabrication of a high-performance intermetallic Fe-As alloy anode for high capacity sodium-ion batteries (SIBs) via a high-throughput and industrially viable melt-spinning process. This earth-abundant low-cost alloy anode exhibits highly enhanced cycling stability, retaining 96% of its 965 mAh·g-1 sodiation capacity after 400 cycles at 50 mA g-1 specific current for SIBs. The exceptional electrochemical performance of the prepared alloy anode is attributed to the crystalline features of the melt-spun fibers, which also enable a remarkable rate performance with ∼668 mAh g-1 sodiation capacity at 5 A g-1. We further demonstrated the application of the prepared alloy anode in a sodium-ion full-cell configuration, where it delivered a sodiation capacity of over 770 mAh g-1 (based on anode) at 50 mA g-1, achieving more than 97% Coulombic efficiency even after 200 cycles. Our results suggest that melt-spun alloy anodes hold great potential for realizing fully functional SIBs. © 2023 American Chemical Society.
Low temperature magnetic study of α-NiS nanoparticles synthesized via hydrothermal technique
(Elsevier Ltd, 2021) Prayas Chandra Patel; Pankaj Kumar Mishra; Hem C. Kandpal
Synthesis of material with nano-order anisotropy has always been a tricky task for the researchers, since there has to be some property-based inhomogeneity present within the homogeneous material. In this report, we discuss the emergence of Exchange Bias (EB), which is itself a case of magnetic property based anisotropy. Here, a thorough low temperature magnetic study of nickel sulfide (NiS) nanoparticles synthesized via solution based hydrothermal technique was performed. To introduce nano-order inhomogeneity we played with different feeding flow rate of the starting materials. The synthesized samples were of highly crystalline mixed phase nature with α-NiS as a dominant phase. Variation in energy bandgap as a function of feeding rate suggests the possibility of the formation different-sized seed cluster. For sample with maximum α-NiS content, presence of strong magnetic coupling at T
Mycorrhiza assisted approach for bioremediation with special reference to biosorption
(EM International, 2017) Shweta Pathak; Prasann Kumar; Pankaj Kumar Mishra; Mukul Kumar
Plants rising in metal polluted soils anchorage a significant group of microorganism that are capable of tolerating high concentration of metal and giving a number of benefits to both the soil and the plant of concern. In our study related to the microbes assisted remediation approaches we find that, among the microorganism involved phytoremediation of heavy metal, the rhizosphere fungus deserve special attention because they can directly improve the phytoremediation process by changing the metal bioavailability through altering the soil pH, release of chelators (Organic acid and siderophores), oxidation/reduction reaction. Similarly the metal tolerant mycorrhizal fungi have been frequently reported in hyper-accumulators growing in metal polluted soils indicating that these fungi have evolved a heavy metal-tolerance and that they may play important role in phytoremediation of the site. Copyright © EM International.
Plant beneficial rhizospheric microorganism (PBRM) strategies to improve nutrients use efficiency: A review
(Elsevier B.V., 2017) Vijay Singh Meena; Sunita Kumari Meena; Jay Prakash Verma; Ashok Kumar; Abhinav Aeron; Pankaj Kumar Mishra; Jaideep Kumar Bisht; Arunava Pattanayak; Muhammad Naveed; M.L. Dotaniya
Plant beneficial rhizospheric microorganisms (PBRMs) are rhizospheric microbes that are able to colonize rhizosphere and to improve plant growth, development and nutrient use efficiency (NUE) by means of a wide variety of mechanisms like organic matter mineralization, biological control against soil-borne pathogens, biological nitrogen (N) fixation, potassium (K), phosphorous (P) and zinc (Zn) solubilization and root growth promotion. Improved grain production to meet the food demand of an increasing population has been highly dependent on chemical fertilizer input based on the traditionally assumed notion of ‘high input, high output’, which results in overuse of fertilizers but ignores the biological potential of roots or rhizosphere for efficient mobilization and acquisition of soil nutrients. A very interesting feature of PBRMs is their ability of enhancing nutrient bioavailability or NUE by ∼ 20-40% with various nutrients. Although chemical fertilization is a quick method, it is not recommendable economically and environmentally, especially if overused. Several PBRMs species have been characterized as biological N-fixer, P, K-solubilizing microorganisms while other species have been shown to increase the solubility of micronutrients, like those that produce siderophores for iron (Fe) chelation. The enhanced amount of soluble macro- and micronutrients in the close proximity of the soil-root interface has indeed a positive effect on plant nutrition. There is a growing body of evidence that demonstrates the potential of various microbes to enhance plant productivity and yield in cropping systems. However, the molecular mechanisms underlying these phenomena, the signals involved as well as the potential applications in a sustainable agriculture approach, and the biotechnological aspects for possible rhizosphere engineering are still matters of discussion. © 2017 Elsevier B.V.
Study of MAX phase based Schottky interfacial structure: the case of electron-beam deposited epitaxial Cr2AlC film on p–Si (100)
(Springer, 2023) Prayas Chandra Patel; Pankaj Kumar Mishra; Hem C. Kandpal
In recent times, due to their highly stable and radiation tolerant nature, interest toward feasibility of developing MAX phase-based applications has suddenly surged. In this context, we for the first time report a comprehensive spin-dependent transport study of Cr2AlC@p–Si-based thin film interfacial structure. Phase purity of the fabricated epitaxial Cr2AlC thin film grown by electron-beam deposition was confirmed from structural, vibrational and elemental analysis. Transport studies showed n-type metallic nature of the deposited Cr2AlC films. Low-temperature transport/magnetic measurements across the interface have shown spin-dependent Schottky behavior. Our results demonstrate the potential of Cr2AlC@p–Si as a novel Schottky interfacial structure for the development of more complex device applications. Graphical abstract: [Figure not available: see fulltext.] © 2023, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
The potential of arbuscular mycorrhizal fungi in C cycling: a review
(Springer Science and Business Media Deutschland GmbH, 2020) Manoj Parihar; Amitava Rakshit; Vijay Singh Meena; Vijai Kumar Gupta; Kiran Rana; Mahipal Choudhary; Gopal Tiwari; Pankaj Kumar Mishra; Arunava Pattanayak; Jaideep Kumar Bisht; Surendra Singh Jatav; Priyanka Khati; Hanuman Singh Jatav
Arbuscular mycorrhizal fungi (AMF) contribute predominantly to soil organic matter by creating a sink demand for plant C and distributing to below-ground hyphal biomass. The extra-radical hyphae along with glomalin-related soil protein significantly influence the soil carbon dynamics through their larger extent and turnover period need to discuss. The role of AMF is largely overlooked in terrestrial C cycling and climate change models despite their greater involvement in net primary productivity augmentation and further accumulation of this additional photosynthetic fixed C in the soil. However, this buffering mechanism against elevated CO2 condition to sequester extra C by AMF can be described only after considering their potential interaction with other microbes and associated mineral nutrients such as nitrogen cycling. In this article, we try to review the potential of AMF in C sequestration paving the way towards a better understanding of possible AMF mechanism by which C balance between biosphere and atmosphere can be moved forward in more positive direction. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.