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Plant Resistance to Viruses

Author: David Evered

Publisher: John Wiley & Sons

Published: 2008-04-30

Total Pages: 226

ISBN-13: 0470513578

Concern about the environmental consequences of the widespread use of pesticides has increased, and evidence of pesticide-resistant virus vectors have continued to emerge. This volume presents a timely survey of the mechanisms of plant resistance and examines current developments in breeding for resistance, with particular emphasis on advances in genetic engineering which allow for the incorporation of viral genetic material into plants. Discusses the mechanisms of innate resistance in strains of tobacco, tomato, and cowpea; various aspects of induced resistance, including the characterization and roles of the pathogenesis-related proteins; antiviral substances and their comparison with interferon; and cross-protection between plant virus strains. Also presents several papers which evaluate the status of genetic engineering as it relates to breeding resistant plants. Among these are discussions of the potential use of plant viruses as gene vectors, gene coding for viral coat protein, satellite RNA, and antisense RNA, and practical issues such as the durability of resistant crop plants in the field.

RNAi Technology

Author: R. K. Gaur

Publisher: CRC Press

Published: 2016-04-19

Total Pages: 380

ISBN-13: 1439873259

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RNAi technology is used for large-scale screens that systematically shut down each gene in the cell, which can help identify the components necessary for a particular cellular process or an event such as cell division. Exploitation of the pathway is also a promising tool in biotechnology and medicine. Introducing new technology in the study of RNA

Antiviral RNAi

Author: Ronald P. van Rij

Publisher: Humana Press

Published: 2011-03-08

Total Pages: 0

ISBN-13: 9781617790362

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Viruses and RNAi share an intricate relationship at many levels. RNAi is an important antiviral defense mechanism in plants and invertebrates, microRNAs – of viral or cellular origin – affect many aspects of virus biology, and replication of many, if not all, mammalian viruses can be suppressed by RNAi. Antiviral RNAi: Concepts, Methods, and Applications provides a collection of protocols for the analysis of viral small RNAs and natural antiviral RNAi responses as well as for the development and optimization of RNAi-based antiviral drugs. As RNAi is a central regulatory mechanism in the cell, the methods in this volume can also be applied out of the context of a virus infection. Divided into five convenient parts, this detailed volume reviews important basic concepts in the field of antiviral RNAi, provides experimental and bio-informatic tools for the analysis of small silencing RNAs, covers methods to biochemically dissect RNAi-based antiviral defense and viral counter-defense mechanisms, describes methods for the design, expression, and delivery of therapeutic antiviral siRNAs, and finally presents genome-wide RNAi approaches for the identification of factors involved in virus replication. Written in the highly successful Methods in Molecular BiologyTM series format, chapters contain introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and notes on troubleshooting and avoiding known pitfalls. Authoritative and accessible, Antiviral RNAi: Concepts, Methods, and Applications serves as an ideal guide for both novice and experienced researchers alike striving to dissect the role of RNAi in the viral life cycle or to further boost the development of novel therapeutics and experimental tools based on RNAi technology.

CRISPR and RNAi Systems

Author: Kamel A Abd-Elsalam

Publisher: Elsevier

Published: 2021-02-27

Total Pages: 842

ISBN-13: 0128219114

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Plants are vulnerable to pathogens including fungi, bacteria, and viruses, which cause critical problems and deficits. Crop protection by plant breeding delivers a promising solution with no obvious effect on human health or the local ecosystem. Crop improvement has been the most powerful approach for producing unique crop cultivars since domestication occurred, making possible the main innovations in feeding the globe and community development. Genome editing is one of the genetic devices that can be implemented, and disease resistance is frequently cited as the most encouraging application of CRISPR/Cas9 technology in agriculture. Nanobiotechnology has harnessed the power of genome editing to develop agricultural crops. Nanosized DNA or RNA nanotechnology approaches could contribute to raising the stability and performance of CRISPR guide RNAs. This book brings together the latest research in these areas. CRISPR and RNAi Systems: Nanobiotechnology Approaches to Plant Breeding and Protection presents a complete understanding of the RNAi and CRISPR/Cas9 techniques for controlling mycotoxins, fighting plant nematodes, and detecting plant pathogens. CRISPR/Cas genome editing enables efficient targeted modification in most crops, thus promising to accelerate crop improvement. CRISPR/Cas9 can be used for management of plant insects, and various plant pathogens. The book is an important reference source for both plant scientists and environmental scientists who want to understand how nano biotechnologically based approaches are being used to create more efficient plant protection and plant breeding systems. Shows how nanotechnology is being used as the basis for new solutions for more efficient plant breeding and plant protection Outlines the major techniques and applications of both CRISPR and RNAi technologies Assesses the major challenges of escalating these technologies on a mass scale

Antiviral Resistance in Plants

Author: John M. Watson

Publisher: Humana Press

Published: 2012-06-10

Total Pages: 380

ISBN-13: 9781617798818

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Studies related to pathogen-mediated virus resistance in plants were instrumental in providing some of the historical observations which ultimately led to the vital discovery of double-stranded RNA (dsRNA)-induced gene silencing or RNA interference (RNAi), which has since revolutionized research on plant-virus interactions. In Antiviral Resistance in Plants: Methods and Protocols, expert researchers in the field detail many of the methods which are now commonly used to study the phenomenon of RNA silencing in relation to viral infections of plants. These include methods and techniques for the isolation and quantitative/qualitative analyses of plant small 21-24 nucleotide RNAs such as small interfering RNAs (siRNAs) and microRNAs (miRNAs) as well as the analysis and manipulation of virus-induced gene silencing (VIGS) in both monocotyledonous and dicotyledenous plants and the use of hairpin RNA (hpRNA) transgenes. Written in the highly successful Methods in Molecular BiologyTM series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and key tips on troubleshooting and avoiding known pitfalls. Authoritative and practical, Antiviral Resistance in Plants: Methods and Protocols seeks to aid scientists in the further study of this crucially important botanical trait.

Phytonutritional Improvement of Crops

Author: Noureddine Benkeblia

Publisher: John Wiley & Sons

Published: 2017-10-02

Total Pages: 549

ISBN-13: 1119079942

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An in-depth treatment of cutting-edge work being done internationally to develop new techniques in crop nutritional quality improvement Phytonutritional Improvement of Crops explores recent advances in biotechnological methods for the nutritional enrichment of food crops. Featuring contributions from an international group of experts in the field, it provides cutting-edge information on techniques of immense importance to academic, professional and commercial operations. World population is now estimated to be 7.5 billion people, with an annual growth rate of nearly 1.5%. Clearly, the need to enhance not only the quantity of food produced but its quality has never been greater, especially among less developed nations. Genetic manipulation offers the best prospect for achieving that goal. As many fruit crops provide proven health benefits, research efforts need to be focused on improving the nutritional qualities of fruits and vegetables through increased synthesis of lycopene and beta carotene, anthocyanins and some phenolics known to be strong antioxidants. Despite tremendous growth in the area occurring over the past several decades, the work has only just begun. This book represents an effort to address the urgent need to promote those efforts and to mobilise the tools of biotechnical and genetic engineering of the major food crops. Topics covered include: New applications of RNA-interference and virus induced gene silencing (VIGS) for nutritional genomics in crop plants Biotechnological techniques for enhancing carotenoid in crops and their implications for both human health and sustainable development Progress being made in the enrichment and metabolic profiling of diverse carotenoids in a range of fruit crops, including tomatoes, sweet potatoes and tropical fruits Biotechnologies for boosting the phytonutritional values of key crops, including grapes and sweet potatoes Recent progress in the development of transgenic rice engineered to massively accumulate flavonoids in-seed Phytonutritional Improvement of Crops is an important text/reference that belongs in all universities and research establishments where agriculture, horticulture, biological sciences, and food science and technology are studied, taught and applied.

RNA Interference and Viruses

Author: Miguel Angel Martínez

Publisher: Horizon Scientific Press

Published: 2010

Total Pages: 0

ISBN-13: 9781904455561

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In this book, expert RNAi specialists from around the world have teamed up to produce a timely and thought-provoking review of the area. The two central themes are: 1) the latest findings on RNAi-virus interactions and 2) progress in the development of RN

RNA Interference

Author: Dr. Tim Doran

Publisher: CABI

Published: 2009

Total Pages: 269

ISBN-13: 1845934105

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This methods manual provides an introduction to RNA interference, the theory behind its many applications, and specific protocols for RNAi, in organisms from plants and C.elegans to Drosophila and mammals. There are also chapters covering small hairpin RNAs and viral-induced gene silencing.

RNA Viruses

Author: Decheng Yang

Publisher: World Scientific

Published: 2009

Total Pages: 722

ISBN-13: 9812833803

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This is the first comprehensive book on human/animal gene responses to RNA viral infections, including prevalent, emerging and re-emerging RNA viruses such as HIV, SARS-CoV, West Nile virus, influenza virus and many others. Human gene responses are reviewed by leading virologists worldwide in the following aspects: (i) the altered gene expression profiles at the transcriptional and translational levels detected with cutting-edge technologies such as cDNA microarray and proteomics; (ii) host innate and adapted immune responses to viral replication in target organs; (iii) virus-activated signal transduction pathways in cell survival, apoptosis and autophagosomal pathways; and (iv) the small interfering RNA/microRNA-mediated gene silencing pathway, a recently characterized new host defense mechanism against viral infection.

Synthetic RNA Interference Against Influenza a Virus

Author: Hung-Chiu Lee

Publisher:

Published: 2017-01-26

Total Pages:

ISBN-13: 9781361236147

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This dissertation, "Synthetic RNA Interference Against Influenza A Virus" by Hung-chiu, Lee, 李洪釗, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract of thesis entitled "Synthetic RNA Interference Against Influenza A Virus" submitted by LEE, Hung Chiu for the degree of Master of Philosophy at The University of Hong Kong In November 2005 Influenza A is one of the deadly and widespread diseases in the world. Due to its highly mutable nature of the Influenza A genome, influenza antigenicity changes rapidly, thereby making vaccination approach to have difficulties to cope with emerging viruses. In addition, vaccination fails to protect immunocompromised populations like elderly and HIV patients from infection. Anti-flu drug is therefore needed when vaccine is not suitable. Available licensed drugs either target on viral endocytosis-fusion process (e.g. M2 ion channel blocker) or virus particle released from infected cells (e.g. neuramindase inhitors). However, drug resistance against M2 ion channel blocker has been widely circulates in current H5 strains in Asia. Although neuraminidase inhibitors retain its activities against most Influenza viruses, high price and limited availability restricted its benefit to global community. As new viral protein inhibitors hunting is still expensive and tedious, different new antiviral schemes, e.g. viral messager RNA (mRNA) degradation, are actively undergone research. RNA interference (RNAi) is the one of the best studied and proven RNA degradation mechanism published nowadays. RNAi is a well-conserved mRNA degradation mechanism existed from plant to human. Viral mRNA could be destroyed by RNAi and thus suppresses virus replication. Synthetic small interfering RNA molecules (siRNA) could induce sequence specific mRNA degradation and hence efficiently inhibit target protein production. Results: This study showed that synthetic siRNA against the Influenza A virus matrix protein mRNA could reduce fusion matrix protein in human embryonic kidney cell line. Most importantly, Influenza A virus replication in MDCK cell culture system was suppressed by synthetic siRNA. Although RNAi against Influenza is subject to genome mutation, new siRNA could be redesigned to eliminate the virus quickly. Plant produced siRNA against Influenza A Non-structural Protein (NS1) is also capable to decrease virus replication. Genetically modified plant may be used as a cheap siRNA source against influenza production. Conclusions: Effective siRNA against Influenza A infection requires systemic siRNA design, careful choice of target and efficient siRNA delivery method. DOI: 10.5353/th_b3553781 Subjects: Small interfering RNA Influenza A virus Gene Silencing