Targeted Genome Editing In Crops

This book serves as an introduction to targeted genome editing, beginning with the background of this rapidly developing field and methods for generation of engineered nucleases. Applications of genome editing tools are then described in detail, in iPS cells and diverse organisms such as mice, rats, marine invertebrates, fish, frogs, and plants. Tools that are mentioned include zinc finger nucleases (ZFNs), transcription activator-like effector nucleases (TALENs), and CRISPR/Cas9, all of which have received much attention in recent years as breakthrough technologies. Genome editing with engineered nucleases allows us to precisely change the target genome of living cells and is a powerful way to control functional genes. It is feasible in almost all organisms ranging from bacteria to plants and animals, as well as in cultured cells such as ES and iPS cells. Various genome modifications have proven successful, including gene knockout and knock-in experiments with targeting vectors and chromosomal editing. Genome editing technologies hold great promise for the future, for example in biomedical research, clinical medicine, and generation of crops and livestock with desirable traits. A wide range of readers will find this book interesting, and with its focus on applications in a variety of organisms and cells, the book will be valuable for life scientists in all fields.

Genome Editing in Plants: Principles and Applications addresses the information of genome editing starting from principles and historical aspects to the latest advancements in the field. As genome-editing technology has emerged as promising and cutting edge, researchers around the world have started producing original research outputs, which have significantly improved our current understanding and potential of this technology. The initial chapters of this book describe different genome-editing tools as well as their principles and applications. Other chapters are dedicated to the present status and future applications of genome-editing techniques in various crop improvement programmes. Some of the advanced applications of CRISPR/Cas tools, such as base editing and RNA detection, along with regulatory aspects of genome-edited crops are described in detail. This book serves as a valuable resource to researchers in the field of crop improvement; graduate and postgraduate students engaged in plant molecular biology and biotechnology; academicians; and policy makers. Key Features: Addresses topics associated with historical development and principles of genome-editing technology Addresses basic mechanisms operating under each genome-editing technology Addresses its application in plants to design crops as per the current and future demands Addresses the regulatory mechanisms of genome-edited crops

Over the last few decades, various techniques have been developed to alter the properties of plants and animals. While the targeted transfer of recombinant DNA into crop plants remains a valuable tool to achieve a desirable breeding outcome, integration of transgenes into the host genome has been random, which in part, leads to reduced acceptance of GMOs by the general population in some parts of the world. Likewise, methods of induced mutagenesis, such as TILLING, have the disadvantage that many mutations are induced per plant, which has to be removed again by expensive backcrossing. Advances in genome sequencing have provided more and more information on differences between susceptible and resistant varieties, which can now be directly targeted and modified using CRISPR/Cas9 technology. By selecting specific gRNAs occurrence of off-target modifications are comparatively low. ZFNs and TALENs- based approaches required re-engineering a new set of assembled polypeptides for every new target site for each experiment. The difficulty in cloning and protein engineering prevented these tools from being broadly adopted by the scientific community. Compared to these technologies, designing the CRISPR toolbox is much simpler and more flexible. CRISPR/Cas9 is versatile, less expensive and highly efficient. It has become the most widely used technology for genome editing in many organisms. Since its inception as a powerful genome-editing tool in late 2012, this breakthrough technology has completely changed how science is performed. The first few chapters in this book introduce the basic concept, design and implementation of CRISPR/Cas9 for different plant systems. They are followed by in-depth discussions on the legal and bio-safety issues accompanying commercialization and patenting of this emerging technology. Lastly, this book covers emerging areas of new tools and potential applications. We believe readers, novice and expert alike, will benefit from this all-in-one resource on genome editing for crop improvement. Chapter 17 is available open access under a Creative Commons Attribution 4.0 International License via link.springer.com.

With over 820 million people facing hunger in today’s world, the need of the hour is the design of plant varieties with high yield, improved traits, and resistance properties in order to mitigate the detrimental impacts of biotic and abiotic stress conditions on food crops. This volume highlights the use of Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR) and CRISPR-associated nuclease proteins as a solution for sustainable agriculture. CRISPR/Cas-mediated genome editing (GE) provides a robust, simple, precise, efficient, economical, and revolutionary toolbox that leads to improved plant traits with enhanced yield, quality, and resistance against various stresses, including climate-related stress, insect pests and diseases, pollution-related stresses, etc. Key features of the book: Explains the differences between conventional breeding, genetically modified crops, and genome editing approaches using CRISPR/Cas Introduces the tools of genome editing, such as ZFNS (zinc finger nucleases), mega nucleases, and TLENS (transcription activator-like effector nucleases) Covers the history, origin, discovery, structure, and classification of CRISPR/Cas Examines the databases and computational approaches of CRISPR/Cas Highlights genome editing of important crop plants with CRISPR/Cas systems, including wheat, maize. tomato, Brassica crops, rice, fruits Explores potential applications of CRISPR/Cas systems for climate smart crops

This book compiles the relevant information related to genome editing tools and their roles in crop improvement. The book contains a brief introduction about various genome editing tools and their application in major crops. It discusses the genome editing approaches and the strategies used for genome editing in different crops. Some of the chapters cover the detailed methodology of sgRNA design, vector construction and transformation in different crops followed by data analysis. A few chapters focus on the applications of genome editing tools towards crop improvement. This book will be of particular interest to plant biologists working in the field of genome editing and crop breeders. It will provide valuable information and useful material for our readers’ experimental work.