Download or read book Microbial Determination of Nutrient Availability written by Commonwealth Agricultural Bureaux and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microbial Determination of Nutrient Availability written by and published by . This book was released on 1977 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mineral solubilizing microorganisms MSM and their applications in nutrient availability weathering and bioremediation written by Muhammad Zahid Mumtaz and published by Frontiers Media SA. This book was released on 2023-03-01 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nutrient Availability as a Control of the Abundance and Activities of Deep Subsurface Microorganisms written by and published by . This book was released on 1992 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The focus of our research is to determine whether the availability of major nutrients (C, N, P) control the abundance, distribution, and activity of heterotrophic microorganisms in subsurface sediments. Specifically we have developed and are testing a microcosm system using subsurface sediment samples from a DOE site. We are using this system to conduct a preliminary nutrient enrichment experiments. The flow-through microcosm system simulates conditions in natural aquifers and can be regulated with respect to water flow rate, temperature, oxygen concentration, and nutrient concentration. Furthermore, the system cam be run aseptically, excluding exogenous bacteria from test cores. In our preliminary nutrient enrichment experiment, we collected deep vadose sediment from the Savannah River Site and pumped sterilized well water from sampling area through microcosms that were filled with this sediment. Experimental treatments included the flow-through of this water amen with different combinations of nutrients (+N+P, +C, +N+P+C) or no additional nutrients. We found that asepsis was maintained for the entire 30 day experiment. We also found that microbial abundance, biomass, and activity increased in several microcosms in response to the flow through of the well water, which was rich in nitrate. This response, however, was variable among both microcosms containing intact sediments and microcosms containing intact sediment core sections. No significant treatment responses were observed, but each microcosm that had an increase in microbial growth also immobilized N from the well water. We infer that water and N availability, and water table fluctuations strongly influence microbial growth and activity in the deep vadose.

Download or read book Plant Microbe Symbiosis written by Ajit Varma and published by Springer Nature. This book was released on 2020-04-01 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Effects of Nutrient Availability and Disturbance on the Composition and Diversity of Soil Microorganisms written by Joshua C. Thigpen and published by . This book was released on 2015 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: Determining how factors such as disturbance and nutrient availability affect species diversity in a community has been a major goal of community ecology. The purpose of this study was to look at how species diversity and composition of soil bacterial communities are affected by nutrient addition and disturbance. I characterized soil microbial communities at the long-term ecological research site at the West Research Campus (WRC) located in Pitt County, NC. Briefly, DNA extracted from soils was analyzed using amplicon sequencing of the 16S ribosomal RNA gene. The Illumina Platform was used to sequence the bacterial DNA from each sample, and the Mothur Pipeline was used to analyze the DNA sequences. I hypothesized that changes in nutrient availability and disturbance would impact soil microbial community composition and diversity through direct and indirect effects mediated by plant-soil interactions. My research complemented previous work carried out in the WRC determining the effects of nutrient addition and disturbance on plant communities. Analysis of 2013 plant data showed that mowing increased plant species richness, and fertilization decreased plant species richness significantly. The experimental treatments as well as the proximity of the blocks to a drainage ditch all had significant effects on plant community composition. Analysis of the microbial community data showed that both fertilization and mowing significantly increased mean species richness. Relative abundance microbial community composition varied significantly due to the proximity of the blocks to the ditch. Presence/absence microbial community analyses showed significant effects of the treatments, as well as ditch proximity on microbial composition differences. Also, unknown microbial communities showed significant variation of the communities due to the treatments. The results of the presence/absence analysis and the unknown microbial community analysis show the importance of rare taxa and unknown microbial communities to the differences in composition of our soil microbial communities. Analysis of the soil chemical and physical data showed very little variation due to the treatments. This study will contribute to our understanding of how both plant and soil bacterial community diversity are affected by anthropogenic nutrient addition and disturbances. Maintaining diversity is important for ecosystem stability and functioning.

Download or read book Mineral Solubilizing Microorganisms MSM and their Applications in Nutrient Bioavailability Bioweathering and Bioremediation Volume II written by Muhammad Zahid Mumtaz and published by Frontiers Media SA. This book was released on 2024-04-18 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bioweathering is the dissolution of rocks and mineral substrates carried out by microorganisms along with mechanical and chemical processes. The application of bacteria in biomining is a biotechnological approach for the extraction and recovery of metals from ores. Microbes interact with minerals as a strategy to colonize and exploit habitats where the environmental parameters disadvantage other microorganisms and they demonstrate the capacity to scavenge critical elements with low bioavailability, such as iron and phosphorus. There is an ongoing need to improve soil fertility and crop production, particularly in dry places, to remediate toxic soils, and clean stone artworks and structures. A more complete understanding of the ecology of mineral weathering processes mediated by the microbiome may provide a significant opportunity for researchers to develop novel solutions to developing challenges in agriculture, the environment, and industry.

Download or read book Soil Nutrients written by Mohammad Miransari and published by Nova Science Publishers. This book was released on 2014-03 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil nutrients are among the most important factors affecting plant growth and yield production as well as the environment. They are subjected to variations by different parameters such as climate, soil and plant. This book presents the effects of different parameters on soil nutrients by researchers and scientists from across the globe. The materials are suitable for students, researchers and scientists. A broad range of topics related to soil nutrients is covered in this book.

Download or read book Nutrient Availability as a Control of the Abundance and Activities of Deep Subsurface Microorganisms Final Report June 30 1991 June 30 1992 written by and published by . This book was released on 1992 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The focus of our research is to determine whether the availability of major nutrients (C, N, P) control the abundance, distribution, and activity of heterotrophic microorganisms in subsurface sediments. Specifically we have developed and are testing a microcosm system using subsurface sediment samples from a DOE site. We are using this system to conduct a preliminary nutrient enrichment experiments. The flow-through microcosm system simulates conditions in natural aquifers and can be regulated with respect to water flow rate, temperature, oxygen concentration, and nutrient concentration. Furthermore, the system cam be run aseptically, excluding exogenous bacteria from test cores. In our preliminary nutrient enrichment experiment, we collected deep vadose sediment from the Savannah River Site and pumped sterilized well water from sampling area through microcosms that were filled with this sediment. Experimental treatments included the flow-through of this water amen with different combinations of nutrients (+N+P, +C, +N+P+C) or no additional nutrients. We found that asepsis was maintained for the entire 30 day experiment. We also found that microbial abundance, biomass, and activity increased in several microcosms in response to the flow through of the well water, which was rich in nitrate. This response, however, was variable among both microcosms containing intact sediments and microcosms containing intact sediment core sections. No significant treatment responses were observed, but each microcosm that had an increase in microbial growth also immobilized N from the well water. We infer that water and N availability, and water table fluctuations strongly influence microbial growth and activity in the deep vadose.

Download or read book Microbiology written by Dave Wessner and published by John Wiley & Sons. This book was released on 2022 with total page 1027 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microbiology is a comprehensive textbook that facilitates a thorough understanding of the scope, nature, and complexity of the science of microscopic organisms. It gives a balanced presentation of foundational concepts, real-world applications, and current research and experimentation. The text approaches the subject within the context of exploration and experimentation, integrating a wealth of classroom-tested pedagogical features. The material is organized around the three pillars of physiology, ecology, and genetics -- helping students appreciate the interconnected and dynamic nature of microbiology and explore the relationship between different types of microbes, other organisms, and the environment. This international adaptation contains up-to-date coverage of topics including DNA replication and gene expression, viral pathogenesis, microbial biotechnology, adaptive immunity, the control of infectious diseases, and the microbiology of food and water. It also offers integrated coverage of SARS-CoV-2 and the impacts of COVID-19, relating it to the importance of an interdisciplinary response to a global pandemic. It also focuses on strengthening the organization of the content and updating the end of chapter problems

Download or read book Microbial Applications written by Vijai Kumar Gupta and published by Walter de Gruyter GmbH & Co KG. This book was released on 2016-12-05 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microbial applications encompass areas including biotechnology, chemical engineering, and alternative fuel development. Research on their technological developments cover many aspects of work using microbes as cell factories. The fields of biotechnology, chemical engineering, pharmaceuticals, diagnostics and medical device development also employ these microbial products. There is an urgent need to integrate all these disciplines that caters to the need of all those who are interested to work in the area of microbial technologies. This book is a step forward to integrate the aforesaid frontline branches into an interdisciplinary research work quenching the academic as well as research thirst of all those concerned about microbes in the respective area of biotechnology, chemical engineering, and pharmaceuticals. All the chapters in this book are related to important research on microbial applications, written by international specialists for researchers and academics in the concerned disciplines. This publication aims to provide a detailed compendium of experimental work and information used to investigate different aspects of microbial technologies, their products as well as interdisciplinary interactions including biochemistry of metabolites, in a manner that reflects the recent developments of relevance to researchers/scientists investigating microbes.

Download or read book A Handbook of Speedy Analysis in Microbiology written by N.B. Singh and published by N.B. Singh. This book was released on with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A Handbook of Speedy Analysis in Microbiology" is a comprehensive guide tailored for absolute beginners, offering a concise yet thorough introduction to the fast-paced world of microbiological analysis. Designed to equip novice microbiologists with the foundational knowledge and practical skills necessary for efficient analysis, this book covers a wide range of topics, from basic laboratory practices and safety protocols to advanced techniques in data interpretation and regulatory compliance. With clear explanations, illustrative examples, and practical tips, this handbook serves as an indispensable resource for those entering the field of microbiology, empowering them to navigate the complexities of microbial analysis with confidence and proficiency.

Download or read book Microbiology written by Dave Wessner and published by John Wiley & Sons. This book was released on 2017-08-28 with total page 962 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microbiology, 2nd Edition helps to develop a meaningful connection with the material through the incorporation of primary literature, applications and examples. The text offers an ideal balance between comprehensive, in-depth coverage of core concepts, while employing a narrative style that incorporates many relevant applications and a unique focus on current research and experimentation. The book frames information around the three pillars of physiology, ecology and genetics, which highlights their interconnectedness and helps students see a bigger picture. This innovative organization establishes a firm foundation for later work and provides a perspective on real-world applications of microbiology.

Download or read book Microbes Based Approaches for the Management of Hazardous Contaminants written by Ajay Kumar and published by John Wiley & Sons. This book was released on 2024-07-08 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: Learn the various microbiological aspects one deals with in environment management and the remediation of toxic contaminants in the environment In recent years, the accumulation of hazardous contaminants has caused a broad-based deterioration in global environmental quality. These have had wide-ranging negative social impacts, affecting climate, soil and water ecosystems, and more. As traditional methods of contaminant mitigation have proven inadequate to the task, microbial-based remediation offers the clearest, most environmentally friendly path forward for this crucial aspect of global environmental stewardship. Microbes Based Approaches for the Management of Hazardous Contaminants offers comprehensive coverage of novel and indigenous microbes and their applications in contaminant mitigation. Surveying all the major microbial products and methods for degrading and remediating hazardous pollutants, it offers a key tool in the fight against global environmental degradation. The result is a cutting-edge introduction to an essential subject. Microbes Based Approaches for the Management of Hazardous Contaminants will also find: Current and future approaches to microbial degradation Detailed discussion of biofilms, exopolysaccharides, enzymes, metabolites, and many more Coverage of metabolic engineering as an alternative strategy Microbes Based Approaches for the Management of Hazardous Contaminants is ideal for those working in the field for the application of microbes in the remediation of hazardous pollutants and environment management, particularly those interested in environmental sciences, microbiology and microbial technology, environmental biotechnology, and molecular biology.

Download or read book Potassium Solubilizing Microorganisms for Sustainable Agriculture written by Vijay Singh Meena and published by Springer. This book was released on 2016-06-27 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: The potassium solubilizing microorganisms (KSMs) are a rhizospheric microorganism which solubilizes the insoluble potassium (K) to soluble forms of K for plant growth and yield. K-solubilization is carried out by a large number of saprophytic bacteria (Bacillus mucilaginosus, B. edaphicus, B. circulans, Acidothiobacillus ferrooxidans, Paenibacillus spp.) and fungal strains (Aspergillus spp. and Aspergillus terreus). Major amounts of K containing minerals (muscovite, orthoclase, biotite, feldspar, illite, mica) are present in the soil as a fixed form which is not directly taken up by the plant. Nowadays most of the farmers use injudicious application of chemical fertilizers for achieving maximum productivity. However, the KSMs are most important microorganisms for solubilizing fixed form of K in soil system. The KSMs are an indigenous rhizospheric microorganism which show effective interaction between soil-plant systems. The main mechanism of KSMs is acidolysis, chelation, exchange reactions, complexolysis and production of organic acid. According to the literature, currently negligible use of potassium fertilizer as chemical form has been recorded in agriculture for enhancing crop yield. Most of the farmers use only nitrogen and phosphorus and not the K fertilizer due to unawareness that the problem of K deficiency occurs in rhizospheric soils. The K fertilizer is also costly as compared to other chemical fertilizers.

Download or read book The Root Systems in Sustainable Agricultural Intensification written by Zed Rengel and published by John Wiley & Sons. This book was released on 2021-04-19 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explore an in-depth and insightful collection of resources discussing various aspects of root structure and function in intensive agricultural systems The Root Systems in Sustainable Agricultural Intensification delivers a comprehensive treatment of state-of-the-art concepts in the theoretical and practical aspects of agricultural management to enhance root system architecture and function. The book emphasizes the agricultural measures that enhance root capacity to develop and function under a range of water and nutrient regimes to maximize food, feed, and fibre production, as well as minimize undesirable water and nutrient losses to the environment. This reference includes resources that discuss a variety of soil, plant, agronomy, farming system, breeding, molecular and modelling aspects to the subject. It also discusses strategies and mechanisms that underpin increased water- and nutrient-use efficiency and combines consideration of natural and agricultural systems to show the continuity of traits and mechanisms. Finally, the book explores issues related to the global economy as well as widespread social issues that arise from, or are underpinned by, agricultural intensification. Readers will also benefit from the inclusion of: A thorough introduction to sustainable intensification, including its meaning, the need for the technology, components, and the role of root systems Exploration of the dynamics of root systems in crop and pasture genotypes over the last 100 years Discussion of the interplay between root structure and function with soil microbiome in enhancing efficiency of nitrogen and phosphorus acquisition Evaluation of water uptake in drying soil, including balancing supply and demand Perfect for agronomists, horticulturalists, plant and soil scientists, breeders, and soil microbiologists, The Root Systems in Sustainable Agricultural Intensification will also earn a place in the libraries of advanced undergraduate and postgraduate students in this field who seek a one-stop reference in the area of root structure and function.

Download or read book Encyclopedia of Soils in the Environment written by Daniel Hillel and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: