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Author: Jack T. Trevors Publisher: Springer Science & Business Media ISBN: 364279050X Category : Science Languages : en Pages : 261
Book Description
Molecular biological techniques such as DNA/RNA extraction and purification, and especially the polymerase chain reaction, PCR, are rapidly gaining interest also in related fields, such as microbiology or environmental sciences. They offer new approaches and opportunities for the determination of microbial cells, DNA and RNA from soils, roots, rhizospheres, sediments and aquatic environments. Detailed protocols for these applications are described in this manual.
Author: Jack T. Trevors Publisher: Springer Science & Business Media ISBN: 364279050X Category : Science Languages : en Pages : 261
Book Description
Molecular biological techniques such as DNA/RNA extraction and purification, and especially the polymerase chain reaction, PCR, are rapidly gaining interest also in related fields, such as microbiology or environmental sciences. They offer new approaches and opportunities for the determination of microbial cells, DNA and RNA from soils, roots, rhizospheres, sediments and aquatic environments. Detailed protocols for these applications are described in this manual.
Author: Marco Mascini Publisher: Royal Society of Chemistry ISBN: 1849732698 Category : Science Languages : en Pages : 187
Book Description
Nucleic acids are the fundamental building blocks of life and are found in all living things. In recent years, their functions have been shown to extend beyond the Watson-Crick base pair recognition of complementary strands. Molecules (known as aptamers) consisting of 40-50 nucleotides have been isolated that are able to bind a broad range of molecules with high affinity and specificity. The molecules recognized by aptamers range from small organic molecules to proteins, cells and even intact viral particles. Catalytic DNA molecules called NAzymes (RNAzyme or DNAzyme) have also been shown to exist and, when combined with aptamers, are known as aptazymes. These biomolecules can be used to develop smart and innovative biosensors for environmental analysis. Monitoring of contaminants in the air, water and soil is a key component in understanding and managing risks to human health and ecosystems. This, in conjunction with the time and cost involved in traditional chemical analysis, means there is a growing need for simple, rapid, cost-effective and portable screening methods. Biosensors are compact devices which complement current field screening and monitoring methods. This book demonstrates the incredible opportunities that nucleic acids can offer to environmental analytical chemistry. The chapters: show how nucleic acids have a pivotal role in the development of smart biosensors for environmental monitoring; describe the development of biosensors based on aptamers and NAzymes for the detection of organic and inorganic pollutants; deal with the use of nucleic acid based biosensors for environmental toxicity screening, and detail the use of nanomaterials, as well as miniaturization and lab-on-a-chip technologies, for nucleic acid based biosensing systems.
Author: Lisa Bartee Publisher: ISBN: 9781636350417 Category : Languages : en Pages :
Book Description
The Principles of Biology sequence (BI 211, 212 and 213) introduces biology as a scientific discipline for students planning to major in biology and other science disciplines. Laboratories and classroom activities introduce techniques used to study biological processes and provide opportunities for students to develop their ability to conduct research.
Author: National Academies of Sciences, Engineering, and Medicine Publisher: National Academies Press ISBN: 0309437385 Category : Science Languages : en Pages : 607
Book Description
Genetically engineered (GE) crops were first introduced commercially in the 1990s. After two decades of production, some groups and individuals remain critical of the technology based on their concerns about possible adverse effects on human health, the environment, and ethical considerations. At the same time, others are concerned that the technology is not reaching its potential to improve human health and the environment because of stringent regulations and reduced public funding to develop products offering more benefits to society. While the debate about these and other questions related to the genetic engineering techniques of the first 20 years goes on, emerging genetic-engineering technologies are adding new complexities to the conversation. Genetically Engineered Crops builds on previous related Academies reports published between 1987 and 2010 by undertaking a retrospective examination of the purported positive and adverse effects of GE crops and to anticipate what emerging genetic-engineering technologies hold for the future. This report indicates where there are uncertainties about the economic, agronomic, health, safety, or other impacts of GE crops and food, and makes recommendations to fill gaps in safety assessments, increase regulatory clarity, and improve innovations in and access to GE technology.
Author: Gary A. Toranzos Publisher: CRC Press ISBN: 1040288987 Category : Science Languages : en Pages : 240
Book Description
From the Preface Antibody techniques have allowed us to study microorganisms in situ. However, until recently all methodology lacked the sensitivity necessary for environmental work where microorganisms are in most cases present at very low concentrations or where microbial ecosystems contain a myriad of different organisms. Gene probes have been used successfully for a variety of samples, but this method was still not sensitive enough. The next logical step was the application of the recently developed DNA amplification technique known as the polymerase chain reaction, or PCR. Since then, many laboratories around the world have adopted PCR for environmental work. Samples obtained from soils, water and air are enormously complex because they are unknown mixtures of DNA and other compounds. Thus, procedures for target DNA amplification from the environment require special attention. The PCR has allowed us to go beyond the need for culturing prior to analysis of microbial communities. It has been shown that even microorganisms that can be routinely grown in the laboratory undergo some physiological changes when exposed to the environment. One of these changes (first observed by R. Colwell and colleagues) is known as the viable-but-non-culturable state, and seems to be a common occurrence. Thus, the use of culture techniques paint only part of the picture in terms of microbial behavior under environmental conditions. The ability to amplify nucleic acids by the PCR has brought about a myriad of very ingenious modifications to the technique that can then be used to study complex ecosystems. The manner in which the PCR can be modified is only limited by the need and/or the imagination of the researcher. The first manual dedicated specifically to the analysis (by PCR) of environmental samples, Environmental Applications of Nucleic Acid Amplification Techniques presents state of the art methodology for the detection of microorganisms in soil, water, air samples, as well as the amplification of nucleic acids from fossil samples. The manual gives step-by-step procedures for the analysis of these samples. Although several publications have addressed the use of Polymerase Chain Reaction technique, very few of them have been directed toward the application of this technique to environmental samples. This book fills this gap in the literature.
Author: Pierre Taberlet Publisher: Oxford University Press ISBN: 0191079995 Category : Science Languages : en Pages : 272
Book Description
Environmental DNA (eDNA) refers to DNA that can be extracted from environmental samples (such as soil, water, feces, or air) without the prior isolation of any target organism. The analysis of environmental DNA has the potential of providing high-throughput information on taxa and functional genes in a given environment, and is easily amenable to the study of both aquatic and terrestrial ecosystems. It can provide an understanding of past or present biological communities as well as their trophic relationships, and can thus offer useful insights into ecosystem functioning. There is now a rapidly-growing interest amongst biologists in applying analysis of environmental DNA to their own research. However, good practices and protocols dealing with environmental DNA are currently widely dispersed across numerous papers, with many of them presenting only preliminary results and using a diversity of methods. In this context, the principal objective of this practical handbook is to provide biologists (both students and researchers) with the scientific background necessary to assist with the understanding and implementation of best practices and analyses based on environmental DNA.
Author: Victor A. Bloomfield Publisher: Sterling Publishing Company ISBN: 9780935702491 Category : Science Languages : en Pages : 854
Book Description
Providing a comprehensive account of the structures and physical chemistry properties of nucleic acids, with special emphasis on biological function, this text has been organized to meet the needs of those who have only a basic understanding of physical chemistry and molecular biology.
Author: Astrid Sigel Publisher: Walter de Gruyter GmbH & Co KG ISBN: 3110434334 Category : Science Languages : en Pages : 596
Book Description
Volume 17, entitled Lead: Its Effects on Environment and Health of the series Metal Ions in Life Sciences centers on the interrelations between biosystems and lead. The book provides an up-to-date review of the bioinorganic chemistry of this metal and its ions; it covers the biogeochemistry of lead, its use (not only as gasoline additive) and anthropogenic release into the environment, its cycling and speciation in the atmosphere, in waters, soils, and sediments, and also in mammalian organs. The analytical tools to determine and to quantify this toxic element in blood, saliva, urine, hair, etc. are described. The properties of lead(II) complexes formed with amino acids, peptides, proteins (including metallothioneins), nucleobases, nucleotides, nucleic acids, and other ligands of biological relevance are summarized for the solid state and for aqueous solutions as well. All this is important for obtaining a coherent picture on the properties of lead, its effects on plants and toxic actions on mammalian organs. This and more is treated in an authoritative and timely manner in the 16 stimulating chapters of Volume 17, which are written by 36 internationally recognized experts from 13 nations. The impact of this recently again vibrant research area is manifested in nearly 2000 references, over 50 tables and more than 100 illustrations (half in color). Lead: Its Effects on Environment and Health is an essential resource for scientists working in the wide range from material sciences, inorganic biochemistry all the way through to medicine including the clinic ... not forgetting that it also provides excellent information for teaching.
Author: Julianne Zedalis Publisher: ISBN: 9781947172401 Category : Biology Languages : en Pages : 1923
Book Description
Biology for AP® courses covers the scope and sequence requirements of a typical two-semester Advanced Placement® biology course. The text provides comprehensive coverage of foundational research and core biology concepts through an evolutionary lens. Biology for AP® Courses was designed to meet and exceed the requirements of the College Board’s AP® Biology framework while allowing significant flexibility for instructors. Each section of the book includes an introduction based on the AP® curriculum and includes rich features that engage students in scientific practice and AP® test preparation; it also highlights careers and research opportunities in biological sciences.
Author: Ian Pepper Publisher: Elsevier ISBN: 0123948177 Category : Science Languages : en Pages : 728
Book Description
Designed for advanced undergraduate students, graduate students, and environmental professionals, this book builds upon the tremendous success of the previous editions with a comprehensive and up-to-date discussion of environmental microbiology as a discipline that has greatly expanded in scope and interest over the past several decades. From terrestrial and aquatic ecosystems to urban and indoor environments, this edition relates environmental microbiology to a variety of life science, ecology, and environmental science topics including biogeochemical cycling, bioremediation, environmental transmission of pathogens, microbial risk assessment, and drinking water treatment and reuse. The final chapter highlights several emerging issues including microbial remediation of marine oil spills, microbial contributions to global warming, impact of climate change on microbial infectious disease, and the development of antibiotic-resistant bacteria. - Presents state-of-the-art research results with key, recent references to document information - Emphasizes critical information using "Information Boxes" throughout - Includes real-world case studies to illustrate concepts, along with frequent use of graphics, cartoons and photographs - Offers questions at the end of each chapter designed to test key concepts - Lecture slides available for instructors online
Author: Jack T. Trevors
Author: Jack T. Trevors
Author: Marco Mascini
Author: Lisa Bartee
Author: National Academies of Sciences, Engineering, and Medicine
Author: Gary A. Toranzos
Author: Pierre Taberlet
Author: Victor A. Bloomfield
Author: Astrid Sigel
Author: Julianne Zedalis
Author: Ian Pepper