Ajit Varma – författare

However, chemical contamination of paddy soils has degraded the quality of this important ecosystem. This book provides an overview of our current understanding of paddy soil pollution, addressing topics such as the major types of pollutants in contaminated paddy soil ecosystems;

This book covers broad areas in the conservation of microorganisms. It addresses the short, medium and long-term preservation of agriculturally important microorganisms, as well as culture collections and their roles. The respective chapters address topics such as conventional approaches to bacterial, fungal and algal preservation, as well as methods and strategies for preserving recalcitrant microorganisms. Readers will also find the latest insights into the preservation of vesicular-arbuscular (VA) fungi and ecology, diversity and conservation of endophytes, and entamopathogenic fungi. Microbes of animal and dairy origin, their preservation and biosafety issues are also explored. Microorganisms are the silent and unseen majority of life on Earth, and are characterized by a high degree of genetic and metabolic diversity. It is well documented that no branch of science or society is unaffected by microbial interventions. Researchers have documented microorganisms from such extreme and unique environments as deserts and hydrothermal vents, and with specific traits that are currently being exploited in agriculture, industry, medicine and biotechnological applications. Such great potential can only be found in microorganisms. The aim of this book – the first entirely devoted to the conservation of microorganisms, and to regulatory mechanisms for access and benefits sharing as per Biological Diversity (BD) Act 2002 – is to promote awareness of our world’s microbial wealth, and to introduce readers to strategies and methodologies for the conservation of microorganisms, which could ultimately save human life on Earth.

The book ‘Root Biology’ written by experts in the field, covers latest research on cellular, genetic, physiological and ecological developmental facets of root growth as well as the interaction of root with an array of microbes whether for the establishment of symbiosis, increasing plant growth or protecting plant from pathogens/attackers.

This book summarizes the current state of knowledge regarding antibiotics and antibiotics resistance genes (ARGs) in the soil environment.

This book provides a comprehensive overview of the benefits of biofertilizers as an alternative to chemical fertilizers and pesticides.Agricultural production has increased massively over the last century due to increased use of chemical fertilizers and pesticides, but these gains have come at a price. The chemicals are not only expensive; they also reduce microbial activity in agricultural soils and accumulate in the food chain, with potentially harmful effects for humans. Accordingly, it is high time to explore alternatives and to find solutions to overcome our increasing dependence on these chemicals.Biofertilizers, which consist of plant remains, organic matter and microorganisms, might offer an alternative. They are natural, organic, biodegradable, eco-friendly and cost-effective. Further, the microbes present in the biofertilizers are important, because they produce nutrients required for plant growth (e.g., nitrogen, phosphorus, potassium), as well as substances essential for plant growth and development (e.g., auxins and cytokinins). Biofertilizers also improve the physical properties, fertility and productivity of soil, reducing the need for chemical fertilizers while maintaining high crop yield. This makes biofertilizers a powerful tool for sustainable agriculture and a sustainable environment.The book covers the latest research on biofertilizers, ranging from beneficial fungal, bacterial and algal inoculants; to microbes for bioremediation, wastewater treatment; and recycling of biodegradable municipal, agricultural and industrial waste; as well as biocontrol agents and bio-pesticides. As such, it offers a valuable resource for researchers, academics and students in the broad fields of microbiology and agriculture.

This book provides a comprehensive overview of the benefits of biofertilizers as an alternative to chemical fertilizers and pesticides. Agricultural production has increased massively over the last century due to increased use of chemical fertilizers and pesticides, but these gains have come at a price.

This book gathers the latest findings on the microbial ecology of saline habitats, plant-microbe interactions under saline conditions, and saline soil reclamation for agricultural use. The content is divided into four main parts: Part I outlines the definition of salinity, its genesis and impacts, and microbial diversity in saline habitats. Part II deals with impact of salinity on microbial and plant life/health. Part III highlights plant – microbe interactions in saline environments, and Part IV describes strategies for mitigation and reclamation of saline soils. The salinization of arable land is steadily increasing in many parts of the world. An excessive concentration of soluble salts (salinity) in soils or irrigation water adversely affects plant growth and survival. This problem is exacerbated in arid and semiarid areas due to their low precipitation and high evaporation rates. In turn, poor management practices and policies for using river water forthe irrigation of agriculture crops often lead to the secondary salinization of soils.Considering the growing demands of a constantly expanding population, understanding the microbial ecology and interactions under saline conditions and their implications for sustainable agriculture is of utmost importance. Providing both an essential review of the status quo and a future outlook, this book represents a valuable asset for researchers, environmentalists and students working in microbiology and agriculture..

This book gathers the latest findings on the microbial ecology of saline habitats, plant-microbe interactions under saline conditions, and saline soil reclamation for agricultural use. Part III highlights plant – microbe interactions in saline environments, and Part IV describes strategies for mitigation and reclamation of saline soils.

This book shares the latest insights into the genetic basis of molecular communication between plants and their microbial consortia. Further, the book highlights the capabilities of the rhizosphere and endosphere, which help manage ecosystem responses to climate change, nutrient cycling and sequestration of carbon; and discusses their application to the development and management of renewable energy sources.In their natural environments, plants are surrounded by a tremendous number of microorganisms. Some microbes directly interact with plants in a mutually beneficial fashion, while others colonize plants solely for their own advantage. In addition, microbes can indirectly affect plants by drastically altering their environments. Understanding the complex nature of the plant-microbe interface (PMI) can pave the way for novel strategies to improve plant productivity in an eco-friendly manner.The PMI approach focuses on understanding the physical, molecular, and chemical interactions between organisms in order to determine their functional roles in biological, physical, chemical and environmental systems. Although several metabolites from plants and microbes have now been fully characterized, their roles in chemical interactions between these associates remain poorly understood, and require further investigation.

This book shares the latest insights into the genetic basis of molecular communication between plants and their microbial consortia.

Electronic and electric waste (e-waste), defined as end-of-life electronic products, including computers, television sets, mobile phones, transformers, capacitors, wires and cables, are a major global environmental concern. The crude recycling of e-waste releases persistent toxic substances, such as heavy metals, polybrominated diphenyl ethers (PBDEs), polychlorinated dibenzodioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs), and the environmental pollution and health risks caused by the improper disposal of e-waste has become an urgent issue.This book offers an overview of e-waste history, sources, and entry routes in soil, air, water and sediment. It also addresses e-waste transport and fate, bioavailability and biomonitoring, e-waste risk assessment, impacts on the environment and public health. In addition, it discusses the impact of e-waste on soil microbial community diversity, structure and function and reviews the treatment and management strategies, such as bioremediation and phytoremediation, as well as policies and future challenges.Given its scope, it is a valuable resource for students, researchers and scholars in the field of electronics manufacturing, environmental science and engineering, toxicology, environmental biotechnology, soil sciences and microbial ecology, as well as and plant biotechnology.

Electronic and electric waste (e-waste), defined as end-of-life electronic products, including computers, television sets, mobile phones, transformers, capacitors, wires and cables, are a major global environmental concern. The crude recycling of e-waste releases persistent toxic substances, such as heavy metals, polybrominated diphenyl ethers (PBDEs), polychlorinated dibenzodioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs), and the environmental pollution and health risks caused by the improper disposal of e-waste has become an urgent issue.This book offers an overview of e-waste history, sources, and entry routes in soil, air, water and sediment. It also addresses e-waste transport and fate, bioavailability and biomonitoring, e-waste risk assessment, impacts on the environment and public health. In addition, it discusses the impact of e-waste on soil microbial community diversity, structure and function and reviews the treatment and management strategies, such as bioremediation and phytoremediation, as well as policies and future challenges.Given its scope, it is a valuable resource for students, researchers and scholars in the field of electronics manufacturing, environmental science and engineering, toxicology, environmental biotechnology, soil sciences and microbial ecology, as well as and plant biotechnology.

This book highlights recent advances in the field of plant-biotic interactions and explores current serious issues in the crop production industry.

This book highlights recent advances in the field of plant-biotic interactions and explores current serious issues in the crop production industry.

This book highlights treatment strategies for bacterial biofilms in connection with a variety of human diseases. Topics covered include biofilms in human health, the role of biofilms in mediating human diseases, and methods for testing bacterial biofilms.

This book provides an overview of the latest advances concerning symbiotic relationships between plants and microbes, and their applications in plant productivity and agricultural sustainability.Symbiosis is a living phenomenon including dynamic variations in the genome, metabolism and signaling network, and adopting a multidirectional perspective on their interactions is required when studying symbiotic organisms.Although various plant-microbe symbiotic systems are covered in this book, it especially focuses on arbuscular mycorrhiza (AM) symbiosis and root nodule symbiosis, the two most prevalent systems. AM symbiosis involves the most extensive interaction between plants and microbes, in the context of phylogeny and ecology. As more than 90% of all known species of plants have the potential to form mycorrhizal associations, the productivity and species composition, as well as the diversity of natural ecosystems, are frequently dependent upon the presence and activity of mycorrhizas.In turn, root nodule symbiosis includes morphogenesis and is formed by communication between plants and nitrogen-fixing bacteria. The biotechnological application of plant–microbe symbiosis is expected to foster the production of agricultural and horticultural products while maintaining ecologically and economically sustainable production systems.Designed as a hands-on guide, this book offers an essential resource for researchers and students in the areas of agri-biotechnology, soil biology and fungal biology.

This book provides an overview of the latest advances concerning symbiotic relationships between plants and microbes, and their applications in plant productivity and agricultural sustainability.Symbiosis is a living phenomenon including dynamic variations in the genome, metabolism and signaling network, and adopting a multidirectional perspective on their interactions is required when studying symbiotic organisms.Although various plant-microbe symbiotic systems are covered in this book, it especially focuses on arbuscular mycorrhiza (AM) symbiosis and root nodule symbiosis, the two most prevalent systems. AM symbiosis involves the most extensive interaction between plants and microbes, in the context of phylogeny and ecology. As more than 90% of all known species of plants have the potential to form mycorrhizal associations, the productivity and species composition, as well as the diversity of natural ecosystems, are frequently dependent upon the presence and activity of mycorrhizas.In turn, root nodule symbiosis includes morphogenesis and is formed by communication between plants and nitrogen-fixing bacteria. The biotechnological application of plant–microbe symbiosis is expected to foster the production of agricultural and horticultural products while maintaining ecologically and economically sustainable production systems.Designed as a hands-on guide, this book offers an essential resource for researchers and students in the areas of agri-biotechnology, soil biology and fungal biology.

As the municipal waste generated in most developing countries contains a substantial amount of organic matter suitable for composting, this technology offers a win-win opportunity for stakeholders in terms of disposing of organic waste and providing organic fertilizers for agriculture.

As the municipal waste generated in most developing countries contains a substantial amount of organic matter suitable for composting, this technology offers a win-win opportunity for stakeholders in terms of disposing of organic waste and providing organic fertilizers for agriculture.

This book gathers the latest insights into soil health and its sustainability, providing an up-to-date overview of the various aspects of soil quality and fertility management, e.g., plant-microbe interactions to maintain soil health;

This book gathers the latest insights into soil health and its sustainability, providing an up-to-date overview of the various aspects of soil quality and fertility management, e.g., plant-microbe interactions to maintain soil health;

This book provides a comprehensive overview of the current state of knowledge on plant-microbiome interactions and associations. It covers all major mechanistic approaches used to investigate microbes’ impacts on plant growth promotion, disease control and health.The industrial manufacture of nitrogen currently accounts for roughly 2% of the world’s total energy consumption. Microbial products are expected to reduce the need for costly fertilizers, as well as chemical pesticides and fungicides. While beneficial microorganisms are increasingly being used in agriculture, abiotic and biotic stresses such as heat, drought, cold, and salt can quickly kill or render them useless in the field. However, discovering new and better treatments is a lengthy process due to the considerable microbial diversity found in soils.Researchers have now proposed using biotechnological approaches to accelerate the process of microbial technology development. The fact that plant-associated microbes stimulate plant growth and development is well known, as the examples of rhizobia and mycorrhizal fungi show. The mechanisms by which these microorganisms maintain plant growth include the production of phytohormones, fixation of nitrogen, and the mobilization of phosphorus and minerals. The plant microbiome is also involved in pathogen suppression, and especially the root microbiome acts as a protective shield against soil-borne pathogens.A special feature of this book is its multidisciplinary approach, spanning from plant microbiology/biocontrol, fungal and bacterial endophytes, plant physiology, to biochemistry, proteomics and genomics. It is ideally suited for researchers and student of agri-biotechnology, soil biology and fungal biology.

This book provides a comprehensive overview of the current state of knowledge on plant-microbiome interactions and associations. It covers all major mechanistic approaches used to investigate microbes’ impacts on plant growth promotion, disease control and health.The industrial manufacture of nitrogen currently accounts for roughly 2% of the world’s total energy consumption. Microbial products are expected to reduce the need for costly fertilizers, as well as chemical pesticides and fungicides. While beneficial microorganisms are increasingly being used in agriculture, abiotic and biotic stresses such as heat, drought, cold, and salt can quickly kill or render them useless in the field. However, discovering new and better treatments is a lengthy process due to the considerable microbial diversity found in soils.Researchers have now proposed using biotechnological approaches to accelerate the process of microbial technology development. The fact that plant-associated microbes stimulate plant growth and development is well known, as the examples of rhizobia and mycorrhizal fungi show. The mechanisms by which these microorganisms maintain plant growth include the production of phytohormones, fixation of nitrogen, and the mobilization of phosphorus and minerals. The plant microbiome is also involved in pathogen suppression, and especially the root microbiome acts as a protective shield against soil-borne pathogens.A special feature of this book is its multidisciplinary approach, spanning from plant microbiology/biocontrol, fungal and bacterial endophytes, plant physiology, to biochemistry, proteomics and genomics. It is ideally suited for researchers and student of agri-biotechnology, soil biology and fungal biology.

This book explores microbial symbiosis, with a particular focus on soil microorganisms, highlighting their application in enhancing plant growth and yield. It addresses various types of bacterial and fungal microbes associated with symbiotic phenomena, including rhizobium symbiosis, arbuscular mycorrhizal symbiosis, ectomycorrhizal symbiosis, algal/lichen symbiosis, and Archeal symbiosis.Presenting strategies for employing a diverse range of bacterial and fungal symbioses in nutrient fortification, adaptation of plants in contaminated soils, and mitigating pathogenesis, it investigates ways of integrating diverse approaches to increase crop production under the current conventional agroecosystem.Providing insights into microbial symbioses and the challenges of adopting a plant-microbe synergistic approach towards plant health, this book is a valuable resource for researchers, graduate students and anyone in industry working on bio-fertilizers and their agricultural applications.

This book explores microbial symbiosis, with a particular focus on soil microorganisms, highlighting their application in enhancing plant growth and yield. It addresses various types of bacterial and fungal microbes associated with symbiotic phenomena, including rhizobium symbiosis, arbuscular mycorrhizal symbiosis, ectomycorrhizal symbiosis, algal/lichen symbiosis, and Archeal symbiosis.Presenting strategies for employing a diverse range of bacterial and fungal symbioses in nutrient fortification, adaptation of plants in contaminated soils, and mitigating pathogenesis, it investigates ways of integrating diverse approaches to increase crop production under the current conventional agroecosystem.Providing insights into microbial symbioses and the challenges of adopting a plant-microbe synergistic approach towards plant health, this book is a valuable resource for researchers, graduate students and anyone in industry working on bio-fertilizers and their agricultural applications.

This book gives a comprehensive overview on the various aspects of Trichoderma, a filamentous fungus ubiquitously present in soil. Topics addressed are the biology, diversity, taxonomy, ecology, biotechnology and cultivation of Trichoderma, to just name a few. Basic as well as applied aspects are covered and a special focus is given on use of Trichoderma in agriculture and beyond. Trichoderma species are widely distributed throughout the world in soil, rotting plant material, and wood. Although they are often considered as a contaminants, Trichoderma species are also known for their ability to act as biocontrol agents against various plant pathogens and plant diseases, and also as biostimulants promoting plant growth. The contents of this book will be of particular interest to, agricultural scientists, biotechnologists, plant pathologists, mycologists, and microbiologists, students, extension workers, policy makers and other stakeholders.

This book gives a comprehensive overview on the various aspects of Trichoderma, a filamentous fungus ubiquitously present in soil. Topics addressed are the biology, diversity, taxonomy, ecology, biotechnology and cultivation of Trichoderma, to just name a few. Basic as well as applied aspects are covered and a special focus is given on use of Trichoderma in agriculture and beyond. Trichoderma species are widely distributed throughout the world in soil, rotting plant material, and wood. Although they are often considered as a contaminants, Trichoderma species are also known for their ability to act as biocontrol agents against various plant pathogens and plant diseases, and also as biostimulants promoting plant growth. The contents of this book will be of particular interest to, agricultural scientists, biotechnologists, plant pathologists, mycologists, and microbiologists, students, extension workers, policy makers and other stakeholders.

This book highlights the latest discoveries about the nitrogen cycle in the soil. It introduces the concept of nitrogen fixation and covers important aspects of nitrogen in soil and ecology such as its distribution and occurrence, soil microflora and fauna and their role in N-fixation.

This book highlights the latest discoveries about the nitrogen cycle in the soil. It introduces the concept of nitrogen fixation and covers important aspects of nitrogen in soil and ecology such as its distribution and occurrence, soil microflora and fauna and their role in N-fixation.